bird you must have room according to your strength and the size of your
subject. You will need the usual materials in quantity, plenty of table
space, and a stout hook depending from the ceiling at the end of a stout
cord, to hang your half-skinned victim upon at a certain stage of the
proceedings.
With but few exceptions, the process in skinning a large bird is, from
start to finish, precisely similar in principle to that for a small one,
which has already been described. When you get the body about half skinned,
and are well started up the back, thrust your hanging hook into the top of
the pelvis, and suspend the bird in mid-air, so that you can work with both
hands. Be careful, however, throughout the whole operation that you do not
allow the weight of the body of the skin to stretch the skin of the neck.
If the head is small enough that the skin of the neck will pass over it,
skin right over it to the base of the beak itself, and proceed in every
respect as with small birds. If, however, the skin of the neck will not go
over the head, then skin the neck as far toward the head as you possibly
can (usually in such cases you can go no farther than the lower end of the
axis or second cervical vertebra), and then cut it off.
The next step is to skin the head. Turn the skin right side out, make a
clean, straight cut from the top of the head straight down the back of the
neck for a sufficient distance to allow the remaining cervical vertebræ to
be drawn up through the opening. It is now a very simple matter to skin the
head and clean the skull.
The wing of a large bird contains, between the elbow and the so-called
"shoulder-joint" (carpus), quite a quantity of flesh lying underneath and
between the radius and ulna. Whatever you do with the wing, _never cut the
ends of the secondaries loose from the ulna_. In spacing and adjusting
those secondaries nature has done something which, to save your life, you
cannot do as well, and if you meddle with her work some one will be sorry.
Slit open the skin all along the under side of this long joint of the wing,
cut out all the flesh from around the radius and ulna, and poison the
interior thoroughly. Put in a little filling of tow or cotton, and sew up
the opening. Even in small birds, except the smallest ones, it is an
excellent plan to slit open the wing on the under side and put some dry
poison on the flesh, without stopping to sew up the cut. Clean out the
flesh and the oil sac from the root of the tail, and poison that part so
thoroughly that any insect who ever dares to think once of harboring there
will instantly drop dead.
A bird like a large heron, with long legs, or an eagle with very thick
legs, should always have the tendons removed from the legs in order to
facilitate curing, and for the mutual benefit of both specimen and
taxidermist when, a little later, the two meet in the laboratory and engage
in a hand-to-hand struggle for supremacy. To accomplish this, cut a slit
lengthwise in the ball of the foot where its rests upon the ground. Cut off
the tendons where they branch and attach to the toes, seize the end of each
large tendon with your pliers and pull it forcibly out of the leg. You can
do this with a fresh bird in about five minutes, whereas in a dry skin that
has been relaxed it will take you much longer. This removes a fine subject
for decomposition, and also leaves the space necessary for the leg wire
when the specimen is mounted. After having removed the tendon I always
give the legs a coat of rather thin arsenical soap, both to cure them and
protect them from insects. Another excellent plan is to lay all such long
legs in a pan of salt-and-alum bath solution for a few hours to thoroughly
cure them.
If there is a layer of fat adhering to the skin, it must be scraped off and
absorbed with corn meal, and scraped again until it is all off. A layer of
fat spoils a skin more quickly and more effectually than any novice can be
expected to believe until he sees for himself, in some of his finest ducks
and brants, just how it is done. If a skin is worth saving at all, it is
worth preserving properly. Grease left on a skin "burns" it.
In making up a skin having a long, slender neck like that of swan, goose,
heron, or crane, it is an excellent plan (when possible) to take a stout
wire, as long as the entire neck and body, wrap a little tow or cotton rags
around it to partly form a false neck, and insert it in the skin. This will
often save a neck from being completely broken in two. Fill the body of the
skin with excelsior, tow, cotton, or _crumpled paper_, which, in distant
jungles, far from civilization, is an excellent thing. In case of need, you
may fill with dry leaves, dead grass, in fact almost anything except wool,
hair, or other animal products. Do not fill the body out to more than
two-thirds its natural size, unless you have abundant storage-room, and
transportation facilities. If filled out full size, large bird skins fill
up boxes and drawers wonderfully fast, and generally it is best to flatten
such skins a little.
[Illustration: FIG. 18.--How to Shape a Heron Skin.]
Large bird skins should always be sewn up. The head must be properly filled
out, and if cut open at the back, that also should have a few stitches, but
not too many, for obvious reasons. In laying out a large skin, if the neck
be long, bend it around to one side as the specimen lies before you on its
back, and lay it on the side of the body along the edge of the wing. If
the legs are long, they, too, must be bent up so that the feet lie upon the
body. The accompanying figure, from a specimen prepared by Mr. William
Palmer, shows just how a great blue heron should be done. The wings must be
carefully placed, the plumage dressed and nicely adjusted, and the finished
skin pinned up in a wide strip of thin cotton-cloth, or anything else you
please, to keep it in perfect shape until it dries.
Of course, a large skin requires plenty of air while it is drying, and
several days' time besides. If such specimens are packed and shipped before
they are dry, mould and destruction will be their portion, and the
collector will do well to flee from the wrath to come. In shipping bird
skins in the East Indies and similar climates, it is customary to solder
them up, air tight, in tin-lined boxes. Dr. W.J. Holland advises me,
however, that dry wooden boxes are good enough if they are tight, and are
first painted over on the inside with melted crystals of carbolic acid.
SPECIAL AND EXCEPTIONAL CASES.--Having fully considered the various
principles involved in making ordinary bird skins, it is now necessary to
note the exceptional cases, and state how each is to be disposed of. It is
my desire to equip the beginner, as far as possible, against every
emergency that is likely to arise in ornithological collecting. For
convenience we will take a few of the avian orders, in their natural
sequence, beginning with the lowest.
THE STRUTHIONES: _Ostriches, Emus, and Cassowaries_.--These great birds are
prime favorites with the showmen, and many a fine specimen often falls most
unexpectedly into the hands of an astonished "local taxidermist," to the
ultimate enrichment of some museum. Happy is he to whom falls a beautiful,
glossy, brown-black cassowary, with head and neck of rich purple, and red
and yellow, and what-not--truly a wonderful bird, and not too large. A full
grown African ostrich is an avian colossus, and his enormous size makes him
quite a serious matter.
With these great birds it is best to open the skin of each leg from the
lower end of the tibia all the way down to the foot, in order to entirely
remove the tendons. Detach the skin from the bone all the way round, and
cure it with arsenical soap and a _little_ alum. The leg should be cut open
on the inside, well back, where the seam will be most out of sight. After
having removed a skin, you will need to keep it soft, sometimes for several
days, perhaps until you can make a suitable manikin, if it is a large
ostrich. Cure the skin with arsenical soap and salt (protecting the
feathers carefully meanwhile), and keep it wrapped up and away from the air
until you are ready to put it on the manikin for the last time; then treat
it with dry alum to make it dry and harden properly.
ORDER SPHENISCI: _The Penguins_.--The penguin of the Antarctic seas is the
king of fat birds, but such magnificent monsters as those brought home by
the Challenger, and now in the British Museum, are worth a long trip to
secure. Mr. Frederick Pearcy, who collected and preserved the specimens,
assured me that it required two men to carry one, and that the removal of
the grease from the skins was a dreadful task. Of the largest specimens,
the huge legs and feet were cut off at the lower end of the tibiæ, and
preserved in alcohol until they could be skinned and cleaned. Since it is
probable that only a very few of my readers will ever visit the rainy,
foggy, storm-beaten and God-forsaken land of the penguin, I will leave the
question of grease removal to the paragraph relating to the Lamellirostres.
LONGIPENNES: _The Gulls, Albatrosses, etc._--The gulls, terns, and petrels
are so beautiful in flight that they are often mounted with the wings fully
spread, in flying attitudes. When a bird is to be mounted thus, the large
wing-bones must not be broken, but simply disjointed and cut loose from the
body at the shoulders. When it is possible to do so, an albatross should be
mounted with wings, outspread, to reveal to the student their enormous
length, and the disproportionate shortness of the primaries and
secondaries. If all the albatrosses in a museum collection are mounted with
closed wings, as they nearly always are, the average observer gains not the
faintest conception of the form and size of the bird in motion--_its normal
condition_.
STEGANOPODES: _The Pelicans_.--The great white pelican is one of the most
satisfactory and even agreeable birds to mount that could possibly fall
into the hands of an able-bodied taxidermist. If I ever adopt a shield and
an assortment of devices with which to cover it, one of the latter shall be
a figure of a huge white pelican rampant; for it was a bird of that
species that gave me a start in taxidermy. It happened in this wise:
The year before I penetrated the walls of my Alma Mater, its venerable
president sought to find among the students an (alleged) taxidermist, or at
least the promise of one. He publicly offered the princely sum of $10 to
anyone who could come forward and mount a bird decently. The gauntlet thus
recklessly thrown down no one could pick up that year, and by the year
following, when I appeared upon the scene, it had grown cold. Like another
Lochinvar, I "came late" for that offer. I had seen one bird skinned and
mounted, and I knew I could do one like it. That was an old, rusty,
second-hand crow. I petitioned to have a chance to "stuff birds," but it
fell on deaf ears. I even went so far as to mount a squirrel, to show what
I could do, and although it was a very fair specimen for that benighted
period, it failed to win.
But one day some good genius sent a dead bird to the president, for the
museum, and with it heaven sent my opportunity. Professor Bessey sent for
me and said, "Now, young man, we are going to see how much you know about
stuffing birds. We've got a specimen for you to try your hand on, and if
you succeed in mounting it decently, you may possibly get an opportunity to
work in the museum." I replied, "Show me the victim."
He took me to his room, and there, spread out upon the carpet, lay an
enormous white pelican. His body was like a great downy pillow, his bill
was as long as a fence-rail, with a great horny knot atop of it, and his
huge yellow pouch would have held a whole school of mackerel, teachers and
all. And what wings! They were full-grown angel's size, and as white and
spotless as Gabriel's own. It seemed like sacrilege to touch them. And such
feet! Enough of them would have covered the college campus. I had never
before seen such a bird, even in my dreams. He really was larger than the
maximum measurements given by Audubon for that species. Professor Bessey
informed me that his name was _Pelicanus erythrorhynchos_. It was not quite
so long as his bill, nor so rough, but it was pretty nearly.
With a pocket-knife, an old misfit pair of pliers, and a smooth, flat piece
of steel that had once been a file, I skinned and mounted that bird, "in
the highest style of the art," as the taxidermic business card always hath
it. I have also faint recollections of a great wad of oakum made into a
body, a thimbleful of arsenic, and a pair of eyes--merely this and nothing
more. As I hope to live, I believe I could feed a live pelican as much
arsenic as I put upon that great skin without even giving him the
stomach-ache; but the bugs seemed to know that was my first effort, and
they have never touched him. I mounted him as the Irishman played the
fiddle at Donnybrook fair, neither by note nor by ear, but, "be jabers, by
main strength," and posed and shaped him by Audubon's superb plate. He was
pronounced an unqualified success. I shaped his future, and he shaped mine
at the same time. When I saw him again, seven years later, he was every bit
as good as new, and I was astonished to find how really good he was. He was
the first bird I ever skinned or mounted, and a lucky bird he was for me.
Had he been a dirty, greasy, old swan, think what a scrape I should have
been in!
LAMELLIROSTRES: _The Ducks, Geese, Swans (and Flamingoes)_.--There are but
two points to be spoken of under this head. The first is that all the birds
of this order must have their heads skinned through a slit at the back of
the head. The other is in regard to cleaning.
All ducks, geese, and swans are very fat, even when they are poorest. Were
they otherwise, they could not live on the water as they do. Nearly the
whole body is enveloped in a firm, tenacious layer of fat, into which the
ends of the body feathers run and take root, and bind the skin itself down
so firmly that it really becomes a part of the fatty layer. To remove the
skin, you must have a keen knife, and by hard labor slice through the fat
as you go. As a general thing, it is slow and tedious work. When you begin,
and all the way as you proceed, use plenty of plaster Paris or cornmeal to
absorb the free oil, and keep it off the feathers.
After the skin is off the body, and before you turn it right side out,
scrape the inside to get the oil off, absorb it with your absorbent
material, and scrape it again and again until the grease is practically
all off, and you have only the skin remaining. This takes work. There is no
royal road to making good duck skins. If you think you can get along all
right by overwhelming the grease on the skin with arsenic and alum, and
venture to leave it half cleaned, you will pay the penalty later, and it
will serve you right. You cannot cure grease with preservatives. You may
fill a fat duck skin half full of arsenic, and yet the oil will ooze out
through the skin on the other side, turning the feathers a dirty yellow
color. The dermestes can eat _every feather_, and also the skin itself,
from the outside, without getting a morsel of the arsenic. The fat simply
acts as an impervious wall between the poison and the skin. Clean a duck
skin thoroughly or else throw it away. It used to be a common thing to see
duck skins with the breast feathers a solid mass of nasty yellow grease
from the oil that had run out from the opening cut, but such specimens are
becoming rare now.
If the feathers get soiled with grease, blood and dirt, wash the plumage
with clean turpentine and a soft tooth-brush, apply an abundance of plaster
Paris, rub it into the feathers, and immediately beat it out with a supple
switch, or piece of stiff wire of proper size. If you have not these
materials, wash the feathers with warm water and a little soap, and dry as
best you can, according to what you have. Manipulate the feathers while
they are drying and they will come out soft and fluffy as in life; but if
left to dry without this, they will remain in a bedraggled, soaked, and
stringy condition. This subject will be fully considered in a separate
chapter (XXV.).
In making up the skin of a duck or goose, a piece of wire must be put into
the neck, with the tow or other filling wrapped around it, or failing that,
the neck filling must be wrapped around a small stick, the upper end of
which is to be thrust forcibly into the skull. The head is large and heavy,
and the neck is very small, so small that the skin will break in two if
there is not a wire or stick run through the body and neck into the head to
support the latter when the skin is being handled. The feet of all
web-footed birds should be spread while drying.
ALECTORIDES: _The Cranes and Herodiones_.--There is but little to add in
regard to birds of either of these orders. The cranes require a slit in the
skin at the back of the head, but the herons do not. The necks of the
latter are very often filled too full in making up a skin, and the neck
filling is often made round, whereas it should always be _flat_, like the
actual neck of the heron or bittern. It is not necessary to remove the
tendons from the legs of the small herons, ibises, etc., but the legs
should always be bent up and the feet disposed of on the body. The feet and
legs of all the above must be treated to a coat of thin arsenical soap, for
the benefit of insect pests.
CHAPTER VIII.
COLLECTING REPTILES.
OPHIDIÆ: _Serpents_.--All the small and medium-sized serpents should be
preserved entire in good, clean, ninety-five per cent alcohol, diluted with
one-half its own bulk of water. If the spirits is not as strong as
ninety-five per cent., then dilute with one-third water instead of
one-half. There should be from two to four incisions made along the median
line of the belly, each one a few inches in length, to make openings
through which the spirits can reach the abdominal region. Give the specimen
plenty of room until it is thoroughly penetrated with the alcohol.
Large serpents must be measured carefully, slit open underneath in a
straight line from the vent up to within six or eight inches of the head,
and completely skinned. A dry snake skin is about as good as none at all
for mounting. I have seen many, but never yet knew of one being mounted
well. By all means preserve all snake skins in spirits, as described above,
or in the salt-and-alum bath. By making a head of cork it is quite easy to
take both the complete skin and skeleton of a large serpent. If the head is
to be mounted with the mouth open, an extra skull must be procured.
LACERTILIA: _The Lizards_.--As with serpents, the small ones should be
opened underneath and preserved entire in spirits, while the large ones, if
alcohol is scarce, may be skinned in the field, and the skins only put into
the spirit-tank for preservation. In putting up specimens entire, the
abdominal opening must be large enough fully to insure the entrance of the
liquid into the abdominal cavity, or otherwise the decay of the intestines
may cause the epidermis to slip from the outside.
CROCODILIA: _The Crocodiles and Alligators_.--A word in regard to shooting
saurians. Go prepared to hunt and kill whatever specimens you require, for
the chances are you will not get any save what are brought to bag with your
own trusty (or rusty) rifle. To kill a crocodile, proceed as follows: Find
where he is in the habit of coming out on the bank for his daily sun-bath;
then, at precisely the right time,
"Come where my love lies dreaming."
Sneak up as close to him as you can, get a position so that you can attack
him broadside on, and post a couple of natives close by, primed beforehand
with instructions to rush forward and grab the scaly monster by the tail as
soon as you fire. Estimate the distance carefully, wipe the perspiration
out of your eyes, aim at the neck-bone, or the vertebral column anywhere in
front of the shoulders, and let drive. If the reptile's body lies still and
his jaws fly wide open, run for him like a quarter horse, for you have hit
his spine, and he is your meat if you only get to him in time to lay hold
of his tail. Take your rifle along, for you _might_ need it again,
particularly if the crocodile is more than ten feet long. If he requires a
_coup de grâce_, give him another bullet in one of his cervical vertebrae,
and the subsequent proceedings will interest him no more.
It is quite a task to skin a ten-foot saurian properly, and to preserve the
skin so successfully that none of the scales will slip off when the time
comes for the skin to be softened and stuffed. My method, which I have
practised successfully with the skins of eleven species of crocodiles and
alligators, is as follows: For the sake of science in general, and the
taxidermist in particular, measure the crocodile carefully and record the
dimensions. Divide the skin along the under side, following the median line
from the throat to the tip of the tail, in one long, straight cut.
Beginning at the end of each middle toe, divide the skin along the bottom
of the foot and the under side of the leg, up to the point where the leg
joins the body, but no farther. Then begin at the edges of the first cut,
and skin as far down the sides of the body as possible. When the legs are
reached, detach them from the body at hip and shoulder without cutting the
skin, and continue on round the body until the backbone is reached and the
skin entirely detached. Sever the head from the neck at the first cervical
vertebra without cutting the skin. Skin out the tongue and remove the flesh
from the palatal apertures and various cavities of the head. Skin each leg
by turning the skin wrong side out until the toes are reached. Leave all
the bones of each leg attached to each other and to the skin itself at the
toes, but cut away the flesh carefully, the same as in skeletonizing.
Remove from the skin as much as possible of the flesh which will be found
adhering to it. When the skin is thoroughly clean, immerse it in a strong
bath of salt and water, and allow it to remain twenty-four to thirty hours.
Then take it out, rub the inside and the leg bones thoroughly with strong
arsenical soap, after which apply powdered alum liberally over the inner
surface, so that not a single spot is missed. Then hang the skin up by the
head (no danger of stretching in this case), and allow it to dry in the
wind and _shade_. When almost hard and stiff, take it down and fold it up
as carefully as if it were a Sunday coat, so that it can be packed in a box
of ordinary dimensions.
Of course small crocodiles, and the skins of larger ones not exceeding six
feet in length, can best be preserved in alcohol, as already described for
lizards. Full instructions for "roughing out" skeletons will be found in
Chapter XXXVII. I will only add to this paragraph the suggestion that of
all the objects that a collector can gather, nothing so well repays in
every way the time and labor spent upon them as a few large, well-made, and
sufficiently hideous skins of crocodilians. They are at once big, ugly,
awe-inspiring, and marketable. The general public is very fond of horrible
animals from far-distant countries, and I always gave it crocodiles galore.
CHELONIA: _Turtles_.--Go where you will in the warm regions of the earth,
you are almost certain to find representatives of this order. In the
tropics the species are very numerous, highly interesting, and often of
commercial value. Many a time your own hunger will be appeased by a tender
steak of green turtle or loggerhead, or a terrapin stew, or a "soft-shell"
fried in batter, or a peck of terrapin eggs dug out of the sand, fresh and
otherwise. The rare and hideous mata-mata of South America will make you a
good meal, and afterward bring you in $25 in hard cash. The hawksbill, with
the valuable "tortoise shell" upon his back, is "a thing of beauty" and "a
joy forever," price, $15. Wherever you go collecting in the tropics or
sub-tropics, turtles are your lawful prey.
_How to Kill a Turtle._--Mr. Lucas says the best way is to do it with
chloroform, by tying a saturated cloth over the victim's head, and keeping
it there until death ensues. This is undoubtedly the most merciful way, but
somehow I never had the chloroform to spare. My plan was to do the killing
in a short, sharp, and decisive onslaught with the knife. With a small,
sharp saw (a dissecting saw with an adjustable back, for the small
specimens), saw through the bridge which unites the shell of the back
(carapax) with that of the under surface (plastron) at B, B (Fig. 19);
then, with the quickest of work, divide the skin around the plastron, as
shown by the dotted line A, A, A, A; with half a dozen quick strokes of the
knife detach the plastron from the flesh of the body, and lift it up until
the interior of the body is exposed. Except for the sawing through the
shell, the rest is but the work of a moment. Now pierce the heart
instantly, and cut the neck in two, which ends all pain at once. The only
merit of this method of killing is that the victim is disposed of and put
beyond the power of pain in about three or four minutes. Very often it is
better to make an incision on the dotted line shown immediately behind the
foreleg, and through this pierce the heart and lungs.
[Illustration: FIG. 19.--How to Open a Turtle.]
The dotted lines in the figure show all the opening cuts that are
necessary. The skin is left attached to the front of the plastron for
apparent reasons, but the plastron is turned up and over the head to
completely expose the interior. In the case of a sea-turtle, which has the
front limbs developed as broad, flat flippers instead of feet, the opening
cut must extend on up the leg, quite out to the extremity of the flipper.
The animal's legs, tail, and neck are now skinned precisely as those of a
mammal would be, with the exception that each of these members is detached
from the body and pulled inward in order to turn the skin wrong side out.
Of course all flesh is to be removed from the animal, precisely as with a
mammal, and unless the skeleton is to be preserved, the shoulder girdles
and pelvis may be cut out with the flesh and thrown away.
Having removed all flesh from the entire subject, wash it clean, and if it
is not to be preserved in alcohol apply arsenical soap and alum to the
skin, putting some of the latter on the outside as well as inside, and make
up the skin otherwise as directed for dry skins of ordinary mammals. The
neck, legs, and tail should have the right quantity of filling to prevent
their shrinking and shrivelling up to the point of unsightliness. Remember
that the specimen may remain as you preserve it, and be studied for years
as a dry skin.
The box turtles are so constructed that when they desire to retire from the
world nothing whatever save the hard shell remains exposed. They cannot be
opened up as described above. It is necessary to meet their wants by simply
sawing a big rectangular section out of the plastron, leaving only a rim
remaining, and through the hole thus made the animal can be skinned, and
also stuffed when the time comes.
CHAPTER IX.
COLLECTING FISHES.
As to the methods of procuring your fish, I have very little to say. In all
my collecting I have never yet seen the time when it did not pay far better
to buy fish specimens of professional fishermen than to turn fisherman
myself. With an enterprising set of fishermen, much may be done by offering
to purchase the strange and curious species that are often unfit for food,
and are usually thrown away. Be first in the fish-market when the day's
catch is being landed; be on hand persistently, in season and out of
season, and by so doing you will have the first chance to buy the handsome
sharks, rays, rhinobati, etc., before they are ruthlessly cut up and sold
piecemeal. Mask your enthusiasm; learn to dissemble, and then you will not
need to pay more than the ruling market prices, even for the specimens
which are of the highest scientific value. In Ceylon I once bought a
remarkable shark-ray for three shillings, which I sold again, almost
immediately, for $75; but it almost cost me a fit of apoplexy to control my
feelings while the bargain was being made. I wanted to give three cheers
for _Rhamphobatis ancylostomus_!
FIELD NOTES ON FISHES.--_Colors._--In collecting and preserving fishes,
happy is he who can sketch with a pencil, and thrice happy is he to whom
the gods have given the ability to paint in water-colors. If you are
blessed with this ability, the correct and _imperative_ thing to do in
collecting is to make a good outline sketch of each species, and color it
carefully from a perfectly fresh specimen. Then, when the glorious colors
of the living fish vanish like magic in the alcohol, or in the air, as the
case may be, there is your permanent and indisputable record, a thing of
great value to science until a better one is produced. At the National
Museum it has for years been the policy of Dr. Goode to have an accurate
water-color drawing made by Mr. Schindler of every species of fish,
cetacean, and reptile received. The result is a series of exhibition casts
in which every detail of color is reproduced with admirable accuracy and
life likeness. In preserving your fresh specimens remember that, no matter
what you may do, _the colors will fade_, and the more delicate tints will
disappear entirely.
_Labels._--For alcoholics the best thing to use is a small bit of pure
sheet tin, or else sheet lead, with a number stamped upon it. The next best
thing is a parchment tag having the necessary data written upon it with a
lead pencil, which is much more permanent in alcohol than any ink.
_Scientific Facts._--Of the many facts the novice should try to ascertain
regarding each species, the following are the most important: All the local
names; degree of abundance; time when most abundant; whether it is a
permanent resident or is migratory; if migratory, the facts relating
thereto; its habits; the depth and character of bottom preferred; food;
what fishes prey upon them; value as food or for other purposes.
_Methods of Preservation._--In the field, fishes may be collected and
preserved in four different ways, according to circumstances, as follows:
1. Preserved entire in spirits. 2. As skins, preserved in spirits. 3. As
skins preserved in brine. 4. As rough skeletons, either preserved dry or in
spirits.
For the purposes of scientific study and close investigation, the most
valuable fish specimens are those which have been preserved entire in
alcohol, or some equally efficient preservative solution. Good alcoholic
specimens rank next in scientific value to fishes fresh from their native
element. Ordinarily, however, the collector's resources are limited, and it
is necessary for him to preserve only the skins of the large and bulky
specimens.
_Tanks for Alcoholics._--For years past the National Museum and United
States Fish Commission have used square, box-like tanks, made of copper and
lined with tin, each tank having a large round hole in its top, as large as
the width of the top will allow, and which is closed tightly by means of a
screw cover. These are known as "Agassiz tanks," for the reason that the
design originated with Professor Louis Agassiz. They are light, not very
costly, easily managed, and are about as nearly perfect for their purpose
as anything can be in this world. They are made of three sizes, to hold
four, eight, or sixteen gallons. To protect them during shipment a strong
pine chest is used, which is provided with wrought-iron handles, hinged
cover, hasp, and padlock. The chests are made to contain one sixteen-gallon
tank, two of eight gallons, and either three or four four-gallon tanks. The
tanks used by the National Museum are made by W.S. Barker, Seventh and D
Streets, S.W., Washington, at the following prices, exclusive of the
chests; sixteen-gallon tank, $16.50; eight-gallon, $10; four-gallon, $4.25;
pine chests, complete, $3 each.
[Illustration: FIG. 20.--Agassiz Tank, for Alcoholics.]
If Agassiz tanks are not obtainable, the next best and the cheapest course
is to have some large round cans made of galvanized iron, with tops that
can be soldered on when the time comes to ship specimens. Wooden kegs are
not of much use in collecting, but both kegs and barrels are good enough to
use in transporting collections. Many a time I have helped myself out of a
difficulty afield by falling back upon the immortal American kerosene can,
holding five square gallons, and which goes to the uttermost parts of the
earth.
_Glass Jars._--In the field I have never found any other sort of a glass
jar half as useful and safe as a common Mason fruit jar, varying in size
from pint to half-gallon. They are infinitely superior to glass-stoppered
jars, and far less liable to be broken.
PRESERVING FISHES ENTIRE IN SPIRITS.--Having taken all the notes on a fresh
specimen that you desire, the next thing is to wash it thoroughly. But
"before washing the fish," says Dr. T. H. Bean, "look it over for external
parasites; examine the gills and the inside of the mouth carefully, as
these are favorite situations. These parasites often furnish a clue to the
migration of the fish; remove them if they can be taken off entire; if not,
let them remain, and call attention to their presence in your shipping
notes. Preserve the parasites in vials or bottles, and provide them with
labels, stating from what fish they came, and in what situation they were
found."
Many fishes when taken from the water have the entire body and gills
covered with a coat of persistent mucus that can be removed only by
determined effort. If you have any alum at hand, you can in a moment make
up a pint or quart of alum water, which will cut the mucus instantly, and
clear it off. Use a stiff brush--a large tooth-brush is the best thing--in
cleaning off this mucus, and do not forget to cleanse the gills thoroughly.
Open the abdominal region of every fish by making a generous cut from the
vent straight forward toward the ventral fins. Usually the length of the
opening should be equal to about one-fifth of the entire length of the
fish. If the fish be a large one, it has always been my practice to open
the fleshy interior still farther by working through this cut, and
detaching the skin from the flesh as far up each side as possible. This
gives the spirits immediate access to the entire mass of flesh, and the
result is very speedy and perfect preservation without any change whatever
in the form or weight of the specimen.
Dr. Bean always directs that the viscera be preserved, to assist in
identification, even though it becomes necessary to remove them from large
fishes and preserve them in separate jars. When there is no particular
reason for their preservation, it is a great advantage to remove them and
throw them away. They are--unless of scientific value--an abominable
nuisance, and do more to spoil good alcohol than all the rest of the fish.
Fishes that have begun to decompose, and have become offensive, yet are too
valuable to throw away, may be disinfected by washing them inside and out
with a moderately weak solution of pure carbolic acid and water, or with a
solution made by dissolving a tablespoonful of chloride of soda in a pint
of water.
For years a very common formula for preservative alcohol has been
ninety-five per cent alcohol diluted with one-third of its bulk of water,
or, in other words, three parts of alcohol and one of water. If there is
any fault to be found with this solution, it is that it is stronger than is
really necessary. I have preserved barrels of alcoholic specimens in a
solution composed of two parts of proof spirits and one part water, and
have never lost a specimen except through leakage. This solution is strong
enough to stand considerable deterioration without the loss of its
contents.
I have never attempted to collect quantities of alcoholics without an
alcoholometer in constant use. This little instrument costs but a trifle,
and affords the only reliable means for testing the strength of alcohol.
Its use enables the collector to exercise economy in the use of his
spirits, and get the maximum benefit from it. Therefore I say, buy an
alcoholometer at all hazards, and carry it and a suitable test-glass with
your outfit. Test the spirits on your specimens frequently, and you will
then run no risks of loss.
Keep a receptacle to use as a receiving and curing tank, into which all
fresh specimens are placed, with abundant room for each to undergo the
curing process. Every animal contains in its body a heavy percentage of
water, which must be, in great measure, replaced by the spirits before the
flesh can be preserved from decay. Into the first bath a great quantity of
blood and abdominal fluids will be soaked out from the specimen, and it is
bound to lose strength rapidly, and also become foul. As long as it remains
clean enough to use, keep up its strength by the addition of pure spirits,
and in it immerse all specimens until they are thoroughly cured. Give them
plenty of room at first, and keep them from settling down to the bottom by
putting there a bunch of excelsior, tow, or cloth. While the spirits in a
can may be strong enough on top to preserve a specimen, at the bottom,
where the animal impurities settle, it may be so weak that anything lying
in it would soon spoil. Often the tail of a fish which hangs upright in a
jar will spoil while the remainder will be preserved.
After specimens have remained in the receiving-tank for from two to four
days, according to size, put them in another receptacle in clean, fresh
spirits, still allowing them plenty of room. Finally, when ready to pack up
and make a shipment home, wrap each fish separately in a piece of thin,
white cotton cloth, just large enough to cover it well, dip it in clean
spirits, and without any tying or pinning of the cloths, lay the fishes in
your barrel like sardines in a box, as closely as they will lie without
being squeezed. Fill the receptacle full of fishes, head it up, and then
pour into it all the clean spirits it will hold.
In order to proceed with the second and third methods of preserving fish
specimens, it now becomes necessary to describe a process.
HOW TO SKIN A FISH.--Of course, no one aspiring to become a collector of
fishes will remain in ignorance of the names of the different fins. And,
more than that, before he can prepare even the rough skeleton of a fish he
must know what its bony structure is like. On the whole, there is a good
deal to be learned about methods in collecting fishes, and as a beginning
we must learn how to skin a scale fish. The methods with cartilaginous
fishes will be considered later.
The principles with all scale fishes are precisely the same, the only
difference being in the greater amount of cold steel and energy required
for such great, hulking brutes as the jewfish, and the magnificent tarpon.
For convenience we will take a specimen about a foot in length; for
example, a striped bass, a pike, or a red snapper.
As is the case with quadrupeds, the left side of a mounted fish is always
expected to be "the show side." Lay the specimen upon its left side, start
at the vent with a stout pair of sharp-pointed scissors, and divide the
skin in a perfectly straight line along the median line of the belly toward
the head, stopping the cut when you approach close to the narrow,
tongue-like point which terminates between the lower angles of the gill
openings. Now reverse the fish, begin again at the vent, and divide the
skin with a clean cut through the scales, in a line parallel with the base
of the anal fin, and about half an inch from where the scales meet the fin
rays. This is really a cut along the side of the fish, as low down as
possible, made necessary by reason of the anal fin. Continue this cut
straight back to the tail, as shown in the dotted line _g-h_ in Plate IV.
[Illustration: PLATE IV. HOW TO CUT OPEN AND MOUNT A FISH.]
You will find that the ventral fins are joined together in the flesh by a
strong bony arch, called the pubis, and this must be divided through the
middle so as to entirely separate the fins. The anal fin-rays must now be
cut loose from the interior rays (called interhæmal spines), which are
really their bony foundation. The ventral fins must also be cut loose from
the pubic bones at the point where they are articulated. Now take the cut
edge of the fish skin between the left thumb and forefinger, and with the
cartilage-knife carefully cut the skin free from the flesh. Be careful not
to disturb the white layer of color pigment which is spread like a silver
lining of feeble tin-foil over the inside of the skin. This is what gives
the fish its silvery color, and if skinned off or scraped away the skin
will look like colorless parchment. _Whatever you do, do not disturb that
color lining._ Proceed with the skinning until the skin has been detached
from the entire upper side of the fish. This brings you to where the dorsal
and caudal fins are inserted.[6]
Now turn the fish over, and proceed as before, as far as you can go. You
presently reach the caudal fin, which must be cut loose from the end of the
vertebral column as far back in the skin as possible. When this has been
done, the skin and the fleshy body still hang together by the attachment of
the rays of the dorsal fin to the interhæmal spines. Cut these apart with
the scissors, from back to front, close up to the skin, which brings you to
where the vertebral column joins the skull. You will make very short work
of that, which frees the fleshy body from the skull. Now scrape away the
surplus flesh from the inside of the skin, wash it thoroughly, remove the
gills (if they are not to be studied), and lay the skin flat upon its side
in your tank of alcohol.
By thus preserving the skins of fishes, instead of whole specimens, a great
number of really large specimens can be preserved in a small quantity of
alcohol, for at the last they can be packed together, heads and tails,
precisely like sardines.
SKINNING CARTILAGINOUS FISHES.--_Sharks, Rays, etc._--The skinning of a
shark or saw-fish calls for no special instructions in addition to the
foregoing, except that the long, narrow, pointed tail requires to be slit
open along the right side of its upper lobe for a considerable distance.
Remember the principle that wherever there is flesh, a way must be made so
that it can be removed, or at least reached from the inside by the
preservative. Of the skull, nothing is to be left attached to the skin
except the jaws. The skeleton is wholly of cartilage instead of bone, and
is easily cut through.
The extremely flat, circular-bodied ray, also with a cartilaginous
skeleton, must be opened on the underside by two cross cuts at right angles
to each other, one extending from mouth to tail, and the other from side to
side. The fin rays are very long stems of cartilage, set so closely
together as to form a solid sheet of cartilage extending from the thoracic
skeleton out to the extremities of the fins, which taper out to nothing.
The thoracic skeleton gives shape to the body of the ray, particularly the
back, and it must be left in place, with the skin of the back attached to
it. Cut through the fin rays where they join the body, and this will enable
you to skin down each side of the fish until you get so near the outer edge
there is no longer any flesh. Stop at that point, cut the flesh away from
the fin rays, and cut away as much of the fin rays themselves as you
please.
Clear out all the flesh and preserve the skin in a very strong solution of
salt and water (what is known to chemists as a "saturated solution"), or in
alcohol if you have it to spare.
PREPARING ROUGH SKELETONS.--In about seven cases out of ten, it is a far
easier and more simple matter to rough out, clean, and mount the complete
skeleton of a fish than the uninitiated would naturally suppose. A few
fishes, such as the shad, have more bones than the law allows, and the
preparation of a complete skeleton thus becomes a practical impossibility.
Fortunately, however, most fishes are more reasonable in the matter of
bones, and to these we direct our efforts.
First and foremost, study the bony structure of a typical scale fish, learn
what its principal parts are, and how they are articulated. Learn how the
ribs lie, and how a row of slender, riblike bones called appendices, or
epipleural spines, are attached to the true ribs, and at their outer
extremities _touch the inside of the skin_ along the lateral line of the
fish. If you will take a good-sized perch as your first subject, you will
not be troubled with any osteological extras, and the process will be as
follows:
Lay the perch upon its side, and with a sharp scalpel cut away the skin
from the whole of the exposed side. Remove all the viscera. By careful
examination, ascertain the exact location of the ribs, and particularly the
row of epipleural spines attached at the upper ends of the former. With a
broad, flat bone-scraper, or your knife-blade if you have nothing better,
begin at the lateral line of the fish, and work toward the top of the back,
taking the flesh away in chunks as you go. In a very short time the
vertebræ and the interhæmal spines are exposed, and with a narrower
bone-scraper the flesh is easily removed from them.
Now turn the fish around, and with great care cut and scrape the flesh away
from the ribs and the epipleural spines. Do not on any account detach the
latter from the former, but at this stage leave them attached to each other
by a thin strip of flesh for their better protection.
Do not separate the ventral fins by cutting through the pubic arch, but
with your small, curve-ended bone-scraper remove the flesh from the angular
recesses of these bones, and leave the anterior end of the pubic arch
attached to the coracoid. Next, pick out the flesh from around the base of
the pectoral fin, remove the eye from its socket, and whatever flesh the
skull contains. Thus does the bony structure of one entire side stand
revealed. The gills are of course to remain in place, as the skeleton would
not be complete without them.
There is but one thing more to add. In treating the other side of the fish
in a precisely similar manner, care must be taken to not disturb the
attachment of the interneural and interhæmal spines which join the dorsal
and anal fin rays to the processes of the vertebral column.
Having thus denuded the fish of its flesh, lay the skeleton in a pan of
water, and with a moderately soft tooth-brush, or nailbrush, brush it
carefully to wash away all blood and mucus. If the bones are full of blood
(which is very rarely the case), the skeleton must be soaked in clear water
for an hour or two, or longer if necessary, to soak out the blood, so that
it will not dry in the bones and permanently disfigure them.
Rough skeletons of fishes may be preserved in alcohol, but for many reasons
it is much the best to dry them. Poison them with dry arsenic; _do not put
upon them either salt, arsenical soap, or alum_, hang each one up by the
head, and see that it dries in good shape. The pectoral fins should lie
well down upon the ribs for mutual protection.
FOOTNOTE:
[6] Some operators open a fish in a straight line along the _middle_ of one
side, but I have never been able to see any reason for this preference.
CHAPTER X.
COLLECTING MARINE INVERTEBRATES.
SPONGES.--A live sponge is simply a vast colony of protozoan animals, each
member of which lives an independent existence, but all are at the same
time mutually dependent upon each other. The sponge of commerce, and the
"cleaned" sponge of the museum collection is, like a branch of coral,
merely the skeleton of the living aggregation. A live sponge is a dark
colored, heavy, tough gelatinous mass, cold and clammy to handle, quickly
offensive if left in the open air, and utterly useless until "cleaned," or
rid of its mass of animal matter. The skeleton of a sponge may be _horny_,
like that of the useful sponges of commerce; _silicious_, like the
marvellously beautiful framework of the famous glass sponge of the
Philippine Islands (_Euplectella_); or _calcareous_, like the curious
little _Grantia_, which looks like a miniature bouquet-holder, with a frill
of spines around its open end.
Owing to the extreme scarcity of sponge collections, very few persons know
how great a variety of forms, and what really remarkable forms, exist no
farther from home than the waters that wash the coast of our own beloved
Florida. I once had the pleasure of collecting no fewer than sixteen
distinct species on the beach between Biscayne Bay and New River Inlet,
some of them of remarkable form, and all of them nicely cleaned for me by
old Ocean.
Of course, I _searched_ for sponges, and found many a fine specimen buried
almost out of sight in the sand,--but what glorious fun it was, to be sure!
There I obtained the large, coarse "basket sponge" (_Hirvina campana_), a
hollow, inverted cone, often capable of holding a pailful of water; the
remarkable finger sponge (_Tuba vaginalis_), which forms clusters of
upright, hollow cylinders; a large cylindrical sponge of a rich brown
color, and beautiful wiry texture, called _Verongia fistularis_; and
sponges that were like trees, like interlocked deer antlers, and what not.
Professor H.A. Ward's last catalogue of invertebrates enumerated
forty-three species of sponges that were on hand when the list went to
press. Of these, the largest specimen was a huge Neptune's cup (_Paterion
neptuni_), four feet in height, and shaped like a gigantic goblet, which
came from the neighborhood of Singapore.
Therefore, I say, when on the seashore, be on the lookout for sponges. If
you can find them on the beach ready cleaned and dried for you, so much the
better; but if you get them alive, the soft animal matter must be macerated
and washed away, just as you would macerate the flesh from a large
skeleton. Soak them in fresh water for a short time to macerate the soft
matter, then wash it out in salt water, and keep this up until the sponge
is at last clean.
CORALS.--The bleached white coral cluster of the cabinet is, like the
sponge, only the skeleton of its former self. When it was forcibly torn
from its foothold at the bottom of the sea it was covered with living coral
polyps, which gave it the color which is peculiarly its own. Some species,
notably _Madrepores_, when first taken from the water look like colored
glass. The main branches are of a yellowish-brown tint, shading toward the
tips to the most delicate and beautiful bluish purple. There is no way to
preserve these colors, because they are due entirely to the presence of the
living polyps. When those delicate organisms die, as die they must, the
color vanishes, and if not cleaned and bleached, the coral assumes a dead,
smoky brown appearance, suggestive of dust and dirt.
Therefore it is best to clean and bleach your corals at once. This requires
a little time, but the process is "so simple a child can use it." Small
specimens can be cleaned quickly by washing them in dilute muriatic acid,
and afterward in clear water to keep the acid from going too far, and then
placing them out in the sun to bleach. Large specimens cannot always be
treated in this way, and the best plan for wholesale operations is to place
the coral on the ground, in a sunny situation, and dash water upon it daily
until the soft animal matter has been washed away, and the wind and sun
combined have bleached the specimens to snowy whiteness.
As a general thing, the natives who live within reach of coral groves are
in the habit of gathering it in quantity, cleaning it very successfully,
and offering it for sale at prices that defy competition on the part of any
scientific collector whose time is worth more than fifty cents a day. The
best thing the collector can do is to get acquainted with the native
fishermen and boatmen, treat them well and pay fairly, and then, if there
is anything in the sea that his collectorship wants, it will soon be
forthcoming. Thus, instead of the growth of the collection depending upon
one or two men, there will be from ten to twenty local experts directly
interested in it. I once came to a complete deadlock with my interpreter
and three boatmen on the translation of the word "coral." They were
Singhalese and Tamils, and coral was worse than Sanskrit to them. Finally,
as a last despairing effort, I took a pencil and began to make a sketch of
a madrepore. The crowd watched its progress in breathless silence until
very soon one appreciative auditor shouted triumphantly, _"Koki kalli!"_
The crowd joyfully echoed it, the mystery was solved, and in five minutes
more we were afloat and on our way to seek
"The treasures of the sea,
In the mystic groves of coral
Where her spirit wanders free."
The packing and shipping of branching corals is a serious matter. I have
tried every way I could think of, and have seen others do the same, and am
firmly convinced that no matter how the large _branching_ clusters are
packed, they are _bound to get somewhat broken anyway_! Of course, if you
care to travel with them and see to their handling at every transfer, that
is another thing, but who can do that? The trouble is that the individual
branches are so very heavy for the diameter of the stems next the base, a
sudden jar causes them to snap in two by their own weight. But then corals
are very beautiful, very interesting, and no matter though they are
troublesome, we must have them.
In packing brain coral, and other compact forms without branches, the
principal thing is to wrap them in sufficient soft materials that their
surfaces cannot get rubbed, for that would ruin them. Do not pack a large
chunk of brain coral without putting a partition across the box to hold it
firmly in its own place, no matter how the box is turned. In Ceylon I once
took the trouble to divide a large box into twelve separate compartments
for the reception of that number of coral specimens.
In packing branching coral, a good quantity of soft, elastic, fibrous
material like coir, cotton, tow, oakum, or something similar, is necessary.
From first to last, take whatever precautions are necessary to keep your
corals from getting filled with dirt and litter. Each cluster must lie on a
thick pad of your fibrous material. In order to get downward pressure upon
it, to hold it in place without breaking the branches, take some soft paper
or cotton cloth, roll up a long, cylindrical pad of cotton or something
else, and thrust it far down into the largest opening between the branches,
with one end projecting above the top of the cluster to receive and
transmit pressure from above. This principle, if properly carried out, will
enable the collector to so firmly fix even the most fragile cluster that it
is fitted to withstand pretty rough treatment in transit without serious
damage.
STAR-FISHES.--When star-fishes are first taken from the water their arms
are pliant, but after a bath in alcohol they become perfectly rigid. If
left to themselves when first put into spirits, the smaller and more
spider-like species will almost tie their arms into double bow-knots, and
insist on keeping them so forever after. Since the way to cure a star-fish
is to soak it in alcohol for from six to twenty-four hours, according to
size, and then dry it flat and in good shape, it becomes necessary to pin
the small ones firmly in shape upon thin boards before immersing them, and
then they will "stay put." See to it that while in the spirits all your
star-fishes, large and small, cure in proper shape, flat, and with each arm
flat and extended in the right direction. After removal from the spirits,
pin out all those not already fastened upon boards, and then let them dry.
I have never found it necessary to poison the spirits, for the reason that
dermestes and other insects seem to respect a dried star-fish for his own
sake.
ECHINI.--In all tropic seas the collector is liable to find echinoderms,
"sea-urchins," "sea-eggs," or "sea-porcupines." These creatures are
usually spherical in shape, with the mouth underneath, and the internal
structure of the animal is covered with a stout, calcareous shell of
uniform thickness, which is set all over on the outside with a mass of
protecting spines, usually fine and very sharp-pointed, but sometimes thick
and blunt. In life the spines are movable, and by means of them the
creature walks, or clings to its native rocks most tenaciously.
The best time to seek echini is at low tide, and the best places are those
where the shore line is composed of rough rocks, scooped out here and there
into shallow pools. Take with you a large basket, a large screw-driver, if
you have one, or failing that, a knife with a long, stout blade. Wear old
clothes, unless you can afford to spoil new ones. When the tide is low you
can wade around in the now peaceful pools, and find the echini in the
sheltered crevices, clinging to the bottom, or the perpendicular sides of
the rocks, but always under water.
To dislodge them, the knife-point or the edge of the screw-driver must be
neatly and skilfully worked under the victim far enough to enable you, with
the exertion of some force and a steady pull, to pry him loose from the
rock, whereupon he becomes your lawful prey. Next comes the cleaning
process. With a small knife, detach the skin of the mouth parts from the
edge of the round hole underneath, in the middle of which the mouth is
situated, and remove all fluid and fleshy matter from the interior of the
shell. That done, wash it out thoroughly. The bony jaws, or "Aristotle's
lantern," may also be drawn out through the hole and thrown away--_unless_
you happen to be collecting for someone who is studying the anatomy of
echini, in which case he must speak for himself.
Having cleaned your sea-urchin, put it in clean alcohol (same strength as
for fishes) and let it soak for about twenty-four hours. This will prevent
the spines from gently dropping off, like leaves in autumn, when you
proceed to dry the specimen. After soaking in spirits, put the specimens
out in a shady place to dry. It is a curious fact that all the echini of
Ceylon and Malayana lose their spines unless soaked in spirits before
drying, whereas those of the Red Sea, the Mediterranean, and the West
Indies can be dried without soaking, and the spines will not fall off.
SHELLS. _"Living" and "Dead" Specimens._--The first thing that the amateur
needs to learn about a shell is that it may be living or dead. As a general
thing, what is technically called a "dead" shell is worthless in a cabinet.
A live shell is one which has been collected with a living mollusc in it,
and then duly cleaned, preserving all its beautiful colors. A dead shell is
one in which the occupant died a natural death, has lain and bleached in
the sunshine until its colors are entirely gone, and its form also ruined
by the weather. Therefore I say, leave dead shells alone, unless it be that
you are making an exhaustive collection of the species in a given locality,
when a dead shell which is identifiable is as good a record as a living
one. Where a shell is actually devoid of color, a dead shell is as good as
a living one, provided it is collected before its edges or its angles have
been rounded by exposure to the sun and rain. Many a living shell has an
epidermis, the same as an animal, while a dead shell has none.
When shells are obtainable, who can resist the impulse to gather them? The
man, woman, or child who is proof against the seductive powers of the
beautiful and many-colored shells of the seashore "is fit for treason,
stratagems, and spoils." Next to the pleasure of collecting shells one's
self is that of witnessing the keen delight of children and ladies in
gathering these beautiful treasures of the sea. If you have never yet had
an opportunity to stroll along the smooth sands of an ocean beach at low
tide, and gather your basketful of beautiful shells, curious sponges, bits
of coral and coralline, while your soul is soothed by the rhythmic music of
the surf, then I pity you. You have indeed yet something left to live for.
Hooker has divided the shell-bearing mollusca into three great
groups--land, fresh-water, and marine--and the shell collector will do well
to study each one separately.
_Land Shells._--These are most abundant in the tropics, less so in the
subtropical regions, and are rare elsewhere. They are seldom found where
moisture is not abundant. In the tropics they are to be collected all the
year round, but in the temperate zone it is best to collect them in the
autumn, when they are fully grown. It is impossible, without devoting too
much space to this subject, to give more than a general idea of the
situations in which land shells are found. Some species are to be looked
for on trees and bushes; others on rocks and stone walls; others again on
the ground, and others again on the blades or in the roots of grass. In the
tropics it is particularly desirable to watch for the beautiful land
snails, which are almost strictly arboreal in their habits. They are to be
found on the trunks and leaves of palms, the banana, myrtle, orange, and
scores of other trees and shrubs.
_Fresh-Water Shells_ which inhabit clear and shallow water are easily
gathered with a stout hand-net. Where the water is murky, or so deep that
the bottom cannot be seen, it is necessary to have an instrument like an
iron-toothed rake, with the teeth set closely together, to be used as a
sort of clam-dredge, raking the bottom and gathering up the mussels. In our
own country the amateur collector will doubtless be surprised at the number
of species of _Unio_ which will repay the labors of a diligent collector.
_Marine Shells._--If you would have one of the jolliest picnics in the
world, don a suit of old clothes, equip yourself with a stout basket, a
screw-driver with a long handle, and a case-knife with a thin blade,
"Hang up thy lute and hie thee to the sea."
Go before the tide is at its lowest ebb, and search in the vicinity of the
largest bowlders, under ledges of rock, under loose stones, in
shallow pools, in bunches of sea-weed, in fact everywhere along the shore.
In these various places you will find cowries, ormers (_Haliotis_),
chitons, limpets, and more others than I could name in an hour.
When wading in shallow water it is well to look out for the pestiferous
sting-ray, and not step on one unawares, lest you find its caudal spine
driven through your foot like a poisoned arrow. But, fortunately, they
seldom trouble the collector. With the limpets, chitons, and other small
shell-fish, you must work the point of your case-knife under them, and with
it gradually detach them from the rock. Where such prey is plentiful, the
collecting of it is grand fun, I assure you.
There are many bivalves which burrow or bury in the mud or sand, which must
be dug out with a stick or trowel, while other species, still more
enterprising, bore into wooden piles, and even into rocks! These, of
course, can be collected only with the aid of a hatchet, or chisel, or
stone-hammer, as the case may be. If you are on the Florida coast you will
do well to search over the coral reefs and the mud flats at low tide. On
the latter you will find conch-shells, pinnas, and numerous other species.
I once made a very successful search for pinnas by wading around barefooted
on a sandy flat on which the receding tide had left the water but little
over a foot in depth. These shells were always found standing up in the
sand, at bay, with their sharp edge up. By going barefooted as I did, you
find the shells by stepping on them and cutting your feet, which is to be
accomplished, however, without hurting the thin edge of the shell. A cut
foot will heal up, but a broken shell never will.
CLEANING SHELLS.[7]--In gathering shells, particularly the marine species,
many of them will be found covered with a thick, leathery, and persistent
epidermis, and many others will be so buried under rough, limy accretions
that their own fathers would scarcely recognize them. However beautiful
such shells may be when cleaned, it is no child's play to clean them and
get them ready for the cabinet. To anyone willing to learn, the processes
are really very simple; and what manual labor under the sun could be more
interesting to a lover of natural history?
_Removing the Animal._--With a large shell, such as a conch, the first step
is to remove the living animal. In some cases I have accomplished this by
hooking a fish-hook into the head of the animal and hanging it up so that
the weight of the shell constantly pulling down on the animal would cause
it to gradually relax and draw out. An excellent plan is to place the shell
for a few days in fresh water and macerate the animal sufficiently that it
may be drawn out. Fortunately the great majority of molluscs are very
small, and it is possible to prepare them for the cabinet without the
necessity of removing the animal. Mr. Greegor's plan is to soak the shell
in alcohol for a few days, to completely preserve the animal, and then dry
it thoroughly to expel all the water from it. When that is done, the final
step is to pour into the shell, through a rubber tube, a little thick
varnish, or hot beeswax mixed with a little vaseline to make it flow
readily, and thus cover the dried-up remains of the animal with an
impervious coating which does away with all odors which might otherwise
arise from it. This part of the process, be it understood, is to be
attended to _after_ the cleaning and polishing has been done.
_Removing the Epidermis._--The epidermis is so tough and horny, and sticks
so tightly to the shell that tools cannot remove it successfully and it
must be done chemically. Make a strong solution of chloride of lime and
water, by putting into a jar one-fourth its bulk of chloride of lime,
two-fourths water, and leaving the remaining fourth part of the space for
the froth that will rise. Soak shells in this pasty solution for a short
time, and it will eat the epidermis off.
_Removing Limy Accretions._--The bulk of all these thick, irregular
coatings must be removed with steel tools--file, scraper, knife,
sand-paper, or hammer--to suit each individual case. The tool that Mr.
Greegor most relies upon is a small and very light hammer, made especially
for him, which is shaped somewhat like a square-headed tack-hammer, with
the pointed end drawn out to a blunt cutting edge, like the edge of a cold
chisel. With this cutting edge a skilful hand can peck the lime or coral
incrustations off a shell very neatly, and without injury to the surface of
the specimen. Acid will not remove the thick, limy deposits, and they must
be cleaned off by mechanical means.
After the bulk of the limy deposits have been removed by means of tools,
the shell usually has a dull, lustreless appearance, and appears to require
something that will remove the remaining particles of lime, impart to it a
permanent gloss, and bring out its beautiful colors. Fortunately there is a
way to do this to perfection, which consists in dipping the shell in a weak
solution of muriatic acid and water, boiling hot. The strength of this
solution must vary according to the nature of the specimen. For thick and
strong shells, which by their solid character you are assured cannot be
damaged by a maximum of acid, put 3 parts of muriatic acid in 10 parts
water. For thin and delicate specimens, use 1 part acid to 10 of water,
varying the amount of acid from 1 part to 3, as your experience will soon
teach you is most desirable. Put this solution in a porcelain kettle, bring
it to a boil, and then with a pair of wooden tongs or forceps dip each
shell into it and hold it there for a second or more, as may be necessary.
On removing it, wash it in clear water and dry it, and if its appearance is
not satisfactory dip it again.
For very delicate shells, having a thin surface color, such as the
_Cypreas_ and _Olivias_, or such shells as have very delicate sculpture,
the weaker solution is best. When it is desired to cut more on one part of
a shell than another, the acid may be applied with a brush, finishing with
a quick dip. Never allow any of the acid solution to remain on the shell,
or it will eat into it and dull the lustre. For fine work, dry each
specimen with a towel.
Shells which have on their exterior a great deal of horny or organic
matter, such as _Haliotis_, _Ostrea_, _Lingula_, and a few others, work
badly in acid, and require to be brushed constantly while cutting, to
remove the organic matter, for the reason that the acid acts only on the
lime of the shell.
Chloride of lime and muriatic acid are both very volatile, and when not in
use should be kept in tightly closed vessels.
FOOTNOTE:
[7] For the best part of the information given under this heading I am
indebted to Mr. I. Greegor, the well-known dealer in sea-shells and Florida
"curios," at 61 Laura Street, Jacksonville, Fla., who is an acknowledged
expert in the treatment of shells, not only in cleaning, but in cutting
sections, polishing, etc. I obtained the facts from him while he occupied a
very high position in the Smithsonian Institution--in the north tower, at
least fifty feet from the ground.
CHAPTER XI.
COLLECTING BIRDS' EGGS AND NESTS.
IDENTIFICATION.--Positive and unmistakable identification of the builder
and occupant of a nest is quite as imperative on the collector as the
gathering of the nest and eggs themselves. There must be no guess-work on
this point, for eggs without a pedigree are often valueless. If an
oological expert is within reach--one who can tell to a
certainty the species of doubtful eggs, or if the eggs themselves are so
characteristic and unique in their shape, size, and markings as to render
their certain identification an easy matter, then is it safe to take home a
"find" without finding the owner.
It is only the fledgling oologist who needs to be told that in all cases of
doubt regarding the identity (_i.e._, the exact species) of a nest-builder,
the only proper course is to collect the bird as well as the nest and eggs.
This may often involve long watching, but it relieves the result from all
uncertainty. No collector should think of going afield in quest of nests
and eggs without taking his gun along. In South America, the only way in
which I could get possession of the wonderful pensile nest of the crested
cacique was by cutting off the limb to which it hung, with a rifle bullet.
In all timbered regions the collector must have a pair of good
climbing-irons, such as telegraph linemen use, to enable him to climb with
ease the nest-bearing trees that would otherwise defy him. It was before
the days of climbing-irons that aspiring Sir Walter Raleigh wrote for the
fair eyes of Queen Elizabeth,
"Fain would I climb, but that I fear to fall,"
to which his august mistress promptly responded with a piece of wisdom
which every young oologist will do well to paste in his hat:
"If thy mind fail thee, do not climb at all!"
Very good and serviceable climbing-irons can be obtained of Mr. Frank B.
Webster, 409 Washington Street, Boston, for $3.50 per pair. Mr. Webster
also keeps, at his very complete naturalist's supply depot, nearly every
requisite that an oologist or taxidermist requires, except one thing that
is indispensable in hunting and lofty tree-climbing,--nerve. Every
collector or taxidermist should send Mr. Webster ten cents for a copy of
his illustrated catalogue, which of itself is probably the finest of its
kind ever issued, and in which all naturalist's and oologist's supplies are
pictured, described, and priced. The following are the principal articles
needed to make up a proper outfit for an egg collector, and Mr. Webster's
prices thereon:
Collecting-box, 75 cents. |Pasteboard trays, for eggs,
Egg drills, six sizes, 15 cents to $1.50. | per dozen, 12 cents.
Calipers, for use in measuring, 60 cents. |Pocket-case (leather),
| complete, with drills,
Embryo hooks, 25 cents. | blower, hooks, scissors,
| and forceps,
Embryo scissors, 25 cents to $1.50. | $5.00.
Egg measures, 75 cents to $1.00. |Climbing-irons, per pair,
| $3.50.
COLLECTING NESTS.--Our boys pay too much attention to collecting eggs, and
not half enough to nests. To the average observer who takes an interest in
perusing the pages of Nature's story-book, a fine collection of bird's
nests is a joy forever. It is ever ready to unfold chapter after chapter of
bird lore, tales of wonderful intelligence and divine ingenuity in adapting
means to ends, and stories galore of difficulties surmounted by the
cunningest little architects in the world. Notice, if you please, the
bewildering variety of materials employed in the construction of these
bird-dwellings, great and small. Why, even the human architects of our own
time are completely surpassed by the Baltimore oriole, the marsh wren, and
the humming-bird.
There is food for thought and cause for admiration in a really good
collection of bird's nests. To me there is much more of interest in any
nest than in the eggs it contains. The latter is a plain and simple product
of nature, to which the bird is merely an interested party to circumstances
beyond its own control. The former is an exhibit of the instinct,
intelligence, reasoning powers, industry, and mechanical and artistic skill
of a living creature of a high order. The nest is what the bird makes it,
and it often tells quite a story. Boys, let us give eggs and skins a rest,
and make a fine collection of nests, _in situ_, as the rockologists say. We
can do this after the nestlings have flown, if you like, without stealing
any eggs or shedding any innocent blood. After the young have tumbled out,
the nest is a back number, and becomes your lawful prey. Take it, and
enjoy it, without remorse over blood that you haven't shed.
[Illustration: FIG. 21.--Bird Nest, _in situ_.]
The most interesting and valuable nests are those that are collected _in
situ_, or, in other words, in the particular crotch, or bunch of grass, or
bush in which the bird placed it. Anything that will show just where a nest
was placed by its builder adds immensely to its interest, and increases its
scientific value. The accompanying illustration of such a nest in Captain
Bendire's collection (Fig. 21), may be taken as an example of how nests of
a certain class can be collected and displayed. The section of the sapling
was sawn squarely off a few inches below the nest, and screwed (from below)
upon a highly polished ebonized pedestal. In drawing this specimen the
label was removed in order that no portion of the principal object should
be concealed, but Captain Bendire's system of labelling is fully shown in
another figure.
The possibilities in collecting and displaying nests _in situ_ are almost
endless. Indeed, so far as I have observed, this is a new and very
attractive field for the collector, for although I have visited a great
many large museums, and in both the New and the Old World have seen many
ornithological collections, I have never yet seen a collection of birds'
nests which represented a tithe of the possibilities in that direction.
Every oologist should have in his library a copy of Rev. J.G. Wood's
charming book, "Homes without Hands," which portrays many of the wonders of
bird architecture.
In collecting nests one must go prepared to saw off branches, to cut
sections of grassy earth, to gather up big tufts of grass, and transport
all these to some safe destination. Very often it will be necessary to
protect a nest by filling its cavity with some soft material, and then with
fine thread or wire to wrap it securely to the limb on which it is placed.
Or again, it may be necessary to remove a nest temporarily from its resting
place, wrap it thoroughly, and transport it separately to the museum, to be
put in its place later on.
[Illustration: FIG. 22.--Wire Standard for Nests.]
Most naked nests, _i.e._, those that have been plucked from their
resting-place, require to be wrapped to keep them from gradually falling
to pieces. This may be done with fine thread of the same color as the
outside materials of the nest, or, what Captain Bendire uses and recommends
as being better, the finest kind of wire which, in large cities, can be
bought, neatly made up on spools, at five to ten cents a spool. The wire or
thread is wound on quite as one would wind thread on a ball, except that
the wire must never be allowed to cross the cavity of the nest, which would
at once make it conspicuous. Put on only enough winding to hold the nest
well together, and distribute it so that the wire will not be noticed when
the nest is placed on exhibition.
For the display of naked nests, Captain Bendire uses a very simple but
ingenious little standard made of four wires twisted together so as to form
an upright stem, a horizontal platform of the right size, with four
perpendicular standards to receive and hold the nest. These standards are
easily bent to conform to the shape of the nest, and if the upper ends
project above the nest they are snipped off with a pair of cutting pliers.
The illustration on page 93 (Fig. 22) shows the exact character of the wire
standard, and Fig. 23 shows it in use, supporting a naked nest. Captain
Bendire's method of labelling his nests is also shown in full. It is to be
noted that the locality of the specimen exhibited, and the name of the
collector, appears in full upon the label--two features which should never
be omitted on a specimen that is of sufficient value to occupy a place in a
museum. Nevertheless, by less careful curators both these statements are
frequently omitted from labels.
[Illustration: FIG. 23.--Nest on Wire Standard, with Labels.]
COLLECTING EGGS.--In connection with a collection of nests, each nest
holding its own lawful and original contents, a good collection of birds'
eggs possesses much interest and beauty.
In collecting and preserving eggs, the most difficult feature of all is to
remove the embryos successfully. In the days when I diligently collected
eggs in many lands, it seemed to me that out of every dozen eggs I
gathered, about thirteen contained from one to two embryos each! But there
are ways in which this difficulty can be successfully overcome.
The full set of eggs laid by a bird for one brood is called a "clutch," and
in collecting it is of scientific importance that whole sets should be
collected and always kept separate, and the number of eggs in each set
taken should be recorded.
Eggs are always blown through a small, round hole in the middle of one
side, preferably in each instance on the poorest side of the egg, if it has
one. Of course, the smaller the egg, the smaller the drill must be, and the
greater the care in handling. It is often a good plan to pierce the shell
with a needle in order to furnish the drill a point of attack. If an egg is
cracked, or happens to be of such value that it must be saved at all
hazards, reinforce it by pasting narrow strips of goldbeater's skin or
court-plaster across the line of fracture.
Having drilled the hole, insert the end of a small wire, having a small
portion of the end bent at a right angle, and if the embryo has not begun
to develop, or happens to be quite small and soft, twirl the wire rapidly
between your thumb and finger, to thoroughly break up the contents of the
egg. Having accomplished this, insert the tip of your blow-pipe (the best
in the world consists of a tube of glass bent at a right angle and
terminating in a fine point, with the large end set in the end of a rubber
bulb, which saves the mouth and lungs all trouble) and with gentle and
gradual pressure blow in air. Hold the egg with the hole downward, of
course, so that the contents will run out freely. Go slowly and carefully,
even coaxingly, for too great pressure will burst any ordinary egg in two
parts very neatly. If the embryo is small and disposed to be accommodating,
help it out by inserting the point of your smallest scissors, snipping it
to pieces, and then drawing out the parts, one by one, with your smallest
forceps.
Having emptied the egg of its contents, introduce some clear water by way
of the blow-pipe, wash out the inside thoroughly, and in case the egg is in
a clean, healthy condition, it can now be laid away on cotton or cornmeal,
with the hole downward, to drain and get dry. Observe this point, however.
The thin, membranous lining of an egg, which the point of the drill pierces
but cannot cut away, often closes together inside the hole so closely as to
retain, for some time, whatever water might chance to remain. For this
reason it was my custom to cut away this membrane around the edges of the
hole. Captain Bendire remarks that "eggs that have been thoroughly cleaned
will retain their original color much better, and insects or mice are not
so apt to trouble them."
REMOVING LARGE EMBRYOS.--It often happens that eggs are taken quite near
the hatching point, containing embryos so lusty in size, and so "very
fillin'" that their successful ejectment seems impossible. _Nil
desperandum._ The way out of the difficulty is through a very small hole.
On this point I appealed to the highest authority, Captain Bendire, and he
kindly gave me, in general substance, the following directions:
In the first place, make up your mind to go slow, and take plenty of time.
If the egg is valuable and the embryo is large, reinforce the egg all over
with strips of goldbeater's skin or court-plaster. Having drilled a fairly
large hole, then insert the head of a needle in a small stick for a handle,
and with the point pierce the embryo in twenty or thirty places. The egg
sac, which is always present, should be taken out, if possible with the
forceps, to give room for water.
Having cleared out the egg as far as possible, fill it up with water to
assist in the decomposition of the embryo. Cover the bottom of a box with a
layer of cornmeal or sawdust; lay the egg on this, with the hole upward
(still full of water), cover the box, and place it under a stove or in any
other place warm enough to hasten the process of decomposition. Work at the
egg a little about every alternate day, but without hurrying matters, and
keep this process in operation until the embryo softens, falls to pieces,
and is ready to be drawn out piecemeal. In removing a large embryo, try to
get hold of the tip of the mandible with the small forceps, so that it can
be drawn out, point foremost, without splitting the shell.
Eggs that emit an offensive odor after they have been blown need to be
rinsed out with carbolic acid and water, or some equally good disinfectant.
It is, of course, to be understood that eggs must be clean on the outside
before they are fit for the cabinet. Usually soap and warm water is
sufficient to remove dirt and stains, but occasionally a particularly hard
case calls for the addition of a little washing soda in the water. The last
washing, however, should always be in clear water.
Inasmuch as a label cannot be attached to an egg, the data necessary to
give the egg a respectable position in the oological world must be written
on the under side of the egg itself, either in lead pencil or India ink,
which is capable of being erased, at will.
The following are the data that should be recorded on every egg collected
and kept:
1. Name of species, or number in A.O.U. check list, if North American.
2. Collector's number, which belongs to _every egg_ of a given set, and
refers to his catalogue and field notes.
3. Number of eggs in the set, or "clutch."
4. Date in full.
In packing eggs for shipment, a great many small boxes of wood or tin are
absolutely essential, and in these the eggs must be carefully packed in
cotton, each one separated from the rest of the world by a layer of cotton.
It is an excellent plan to wrap every large egg separately in cotton, as
oranges are wrapped in papers. Captain Bendire recommends the making of
divisions, one for each egg, with strips of pasteboard, like the crates in
which egg producers pack eggs for shipment to market. This gives each egg a
compartment by itself, with a bit of soft cotton cloth at top and bottom.
If produce dealers can afford to take such care of eggs worth only thirty
cents per dozen, surely oologists can do the same when they are within the
pale of civilization, and can get the materials.
At the National Museum the duplicate eggs are stored in small, rectangular,
shallow pasteboard trays, or half boxes, each of which has its bottom
covered very neatly and exactly with a section of cotton wadding, which
gives a soft, springy cushion for the eggs to lie on without the
undesirable fluffy looseness of ordinary cotton batting.
PART II.--TAXIDERMY.
_Keeping everlastingly at it brings success._
CHAPTER XII.
THE LABORATORY AND ITS APPOINTMENTS.
It would be impossible for me to dwell too strongly upon the importance,
nay, even the vital necessity to the taxidermist, of a commodious and
suitable workroom, and a good supply of proper tools and materials. Anyone
setting up a store of any kind meets the expenditures for fixtures and
furniture as a matter of course; but the average taxidermist would consider
it a killing thing to invest from $100 to $200 in good tools and
materials. First-class tools, and a good assortment of them, are
indispensable allies in the production of the finest kind of work in the
shortest possible time.
In taxidermy let us have no making of bricks without straw. As well might
an artist attempt to paint a grand picture with a sash tool as a
taxidermist attempt to mount fine specimens with a dull knife, an old file,
and a pair of rusty pliers.
Let us suppose we are fitting up a taxidermic laboratory in which to mount
all kinds of vertebrate animals, great and small. To begin with, we must
have a good room, if possible 15 X 25 feet, or even larger, with _good
light_, a high ceiling, and an abundant supply of water. There must be
somewhere a storeroom for bulky materials, and a drying-room for freshly
mounted specimens. There must be provided somewhere, for the wet mammal
skins, a big, box-like tank lined with sheet lead, for very large objects,
and some alcohol barrels for smaller ones. These must be provided with
tight covers, or the salt-and-alum bath will evaporate with great rapidity.
After the above, our laboratory will require the following
FURNITURE AND FIXTURES.--A heavy work-table, 8 feet long, 4 feet wide, and
2 feet 6 inches high; top 1-1/2 inch thick.
A tool case and chest of drawers.
A stove, a chopping-block, a heavy bench vise.
A grindstone, a blacksmith's anvil, and portable forge.
A water-tight platform on castors, on which to stand large mammals that are
wet and dripping.
TOOLS.
2 killing-knives. |1 machinist's hammer.
2 cartilage-knives. |1 hatchet, to lend.
1 pair shears, and 1 pair fine scissors. |1 sharp hatchet, to use.
1 draw-shave, adjustable handles. |1 cold chisel.
2 skin-scrapers, of sizes. |1 set stone-cutter's chisels.
3 gouges, of sizes. |1 punch.
3 chisels, of sizes. |1 tap wrench.
1 screw-driver. |1 pair calipers.
1 2-foot rule. |1 set of hack saws, for iron and
| brass.
1 tape-measure, 12 feet. |1 set iron fillers, of sizes.
1 thread-cutter, for iron. |1 set wooden fillers, of sizes.
1 thread-cutter, for brass. |1 set modelling tools.
3 pair pliers, of sizes. |1 set of files.
3 pair cutting nippers. |1 set of paint brushes.
4 pair forceps, of sizes. |1 set of brushes for hair and
| teeth.
1 hand vise. |1 gluepot.
1 hand drill. |1 set of awls.
2 monkey wrenches, of sizes. |1 set of glover's needles, 3
| sizes.
1 ratchet brace, with bits and drills. |Best linen sewing twine, or
4 gimlet bits, of sizes. |"gilling thread," of two or three
| sizes.
1 hand-saw. |1 iron thimble.
1 key-hole saw. |1 spirit-lamp, or gas-stove.
1 claw hammer. |Pails, kettles, cups, bowls, etc.
1 tack hammer. |12 spools of Barbour's linen
| thread.
MATERIALS.--Excelsior; hemp tow of two qualities, coarse and fine, both of
long fibre; flax tow, such as upholsterers use; cotton batting; oat straw;
potter's clay; good glue; plaster Paris; arsenical soap; spirits of
turpentine; benzine; salt by the barrel; ground alum by the hundredweight;
pine and hemlock lumber, one to two inches thick; 2×4 pine scantling; an
assortment of annealed wire; rods of Norway iron, from 3/16 inch to 1 inch;
nails, tacks, wrought-iron staples, screws, nuts, bolts, wrapping twine;
rosettes for iron standards; washers, all sizes; alcohol, shellac, white
hard oil finish (varnish); muriatic acid, sheet wax, sperm oil; glass eyes,
all sizes, kinds and colors; unlimited pluck, patience, and perseverance.
If the worker intends to mount only birds and small mammals, he will need
but a very small portion of the tools and materials enumerated above. But
fie! Where is the taxidermist worthy of the name who will admit that his
resources are limited, or that he is not able and ready to "set up" any
animal that may be brought to him, no matter how big or how bad it is.
Perish the thought that he is not able to cope with dog, deer, or even
elephant.
We now start on the supposition that you have acquired all the tools and
materials you are likely to need, and that our subsequent work is not going
to halt or hang fire on account of the lack of this or that article.
CHAPTER XIII.
PRELIMINARY WORK IN MOUNTING MAMMALS.
RELAXING DRY SKINS.--Nearly all mammal skins that go from one country to
another are sent in a dry state, and it is a rare exception to obtain a
foreign skin in any other condition. It therefore behooves the mammal
taxidermist to become a thorough expert in softening dry skins of all kinds
and sizes, and bringing them into mountable condition.
To relax a dry skin, rip it open, remove the filling material, and immerse
it in a weak but _clean_ salt-and-alum bath (see Chapter IV.) until it
becomes soft, be the time required three days or three weeks. If you are in
a great hurry, soak the skin at first for a brief period in clear water,
and if it is milk-warm, so much the better. Sometimes a skin is so old and
hard and refractory that the bath of salt and alum seems to make no
impression upon it, in which case try clear water. In a few hours it will
yield and collapse, and then it must be put into the bath, or the water
will soon macerate it, and cause the hair to slip off. You can leave the
skin in the salt-and-alum bath as long as you choose without endangering it
in any way.
The inside of every dry skin usually has over it a hard, inelastic coating
which, when once gotten rid of by shaving or scraping, leaves the skin
underneath measurably soft and elastic, according to its kind. If the skin
is a small one, or no larger than that of a wolf, the best way to get it in
working order is to lay it flat upon the table, and go at it vigorously
with the skin-scraper (see Fig. 24). In this there must be no half-way
measures, no modesty, no shirking. Bear on hard, dig away at the same spot
with all your energy, first in one direction, then crosswise, then
diagonally. Scrape as if you were scraping on a wager, and presently the
skin will become so thinned down it will become quite soft, and even
elastic. This is hard work, it starts the perspiration and keeps it going,
but it will conquer the hardest skin that ever was made.
To make a skin sufficiently elastic to mount, it must be turned wrong-side
out and scraped all over thoroughly with a skin-scraper, from nose to tip
of tail, and phalanges. Small skins yield far more readily and kindly than
the larger ones. The skins that are hardest, horniest, and most refractory
are those of the capybara, all of the _Suidæ_ (hogs), and tropical deer. I
have mounted skins of these that when first softened were precisely like
horn,--and at best with such subjects the resulting specimens are only
"passable."
Sometimes when the scraper can make no impression, it becomes necessary to
laboriously pare down the inside of an entire skin with the knife before
scraping it. This is tedious, but effective, for a sharp knife leaves no
room for argument.
[Illustration: FIG. 24.--Skin-Scrapers, about one-fourth actual size.]
All skins larger than a gray wolf, whether they be fresh or dry, need to be
stretched on a beam, and pared down with a sharp draw-shave that has
adjustable handles. This useful instrument can be bought at any large
hardware store for $1.25. Keep it thoroughly sharp. The beam should be
about seven feet in length, and six by three inches in size, and laid flat.
One end of it is to be bolted firmly down to your bench by two movable iron
bolts, and the half which projects beyond the edge of the table must have
both of its upper edges rounded off so that it will represent half a
cylinder with the convexity uppermost. The table itself must be fastened
securely in place. Throw the skin over the rounded end of this beam, drive
a stout "scratch-awl" through it, just beyond the reach of your arms,
stretch and flatten the skin upon the beam, and with the draw-shave
carefully shave down the entire skin until it is thin enough.
Be very careful at first, until your hands acquire skill, or you will cut
through the skin, which, in the case of an animal like a hair seal means an
unsightly, permanent defect. Do not be afraid of paring a skin too thin so
long as you stop at the roots of the hair.
Of course you can not pare down the skin of the head and feet with the
draw-shave, and these must be treated with the knife and scraper. The skin
of the head of every mammal must be pared down and scraped particularly
thin all over, especially the eyelids, lips, and nostrils, so that when
these parts are backed up with clay you can model them into exquisitely
fine form and expression. If you slight the skin of the head, good-by to
all expression; you will merely be able to "stuff" it, and that is all. If
its features look coarse, uncouth, and wooden, it will probably be because
the thickness and inelasticity of the skin defies your art.
Of course the joints of the feet must be got into working order. The leg
bones and skull require to be thoroughly scraped and cleaned, and the skin
itself worked up as nearly as possible to the condition of a fresh
subject.
CARVING WOODEN SKULLS AND LEG BONES.--It is absolutely essential that
every mammal to be mounted should have a skull, and all save the smallest
should have leg bones also. If the skull and leg bones that belong in a
skin are missing, I invariably carve others of the same size out of soft
pine to replace the lost members. These bones are imperatively necessary to
give shape and length to the various joints and angles of the limbs, to
shape the head, to give a foundation for the attachment of wires, and to
build upon generally. Very often the skull of an animal is of such value to
science that it must be kept out of the skin at all hazards, and exhibited
separately. Then it must be duplicated in wood.
Every mammal taxidermist _must_ learn how to carve wooden bones, and the
quicker he becomes expert at it, the better. Very few tools are required,
and these are as follows: A small hatchet, a pair of 8-inch calipers, a
pair of 8-inch dividers, gouges of three sizes, 1/4, 1/2, and 3/4 inch;
chisels of about four sizes between 3/8 and 1 inch, a draw-shave, a
spoke-shave, a good sharp pocket-knife, and the usual supply of boring
tools.
[Illustration: PLATE V. PARING DOWN A LARGE MAMMAL SKIN.]
To carve a wooden skull, proceed as follows: If you have not the genuine
skull to use as a pattern, you must procure one from an animal of the same
species, and ascertain its size in comparison with what the wooden skull
must be, _e.g._, whether it be larger or smaller. Then procure a piece of
soft pine timber, free from knots, and thick enough to turn out a skull of
the proper size. If this can not be found in one piece, glue together
several pieces of pine until they form a block of the proper size. On the
top of this block place your genuine skull, and trace its outline on the
wood, making your outline larger or smaller, as it may need to be, and
bilaterally symmetrical. Now take your hatchet and hew the two sides of the
block down exactly to this outline. This represents the "ground plan" of
the skull.
To get the side elevation, sketch out on the side of this block a side-view
outline of the skull, and then hew down to that. With your dividers, locate
exactly the inner edge of the orbits, and then mark out with a pencil the
entire circle of each orbit. With a gouge carve out the hollows neatly, and
then with your flat chisels attack the cranium, round off its angles, and
so work over the entire skull.
Measure frequently with the calipers to see that the dimensions are
correct. There is no need to go into any of the details of the back part,
or basi-occipital portion of the skull, nor with any other details except
those that lie on the surface. It is important to shape the orbits,
zygomatic arch, the frontal bones, the muzzle and lower jaw, quite
accurately, for these bones bear scarcely any flesh. In making skulls for
apes and monkeys the greatest care is necessary to produce the facial
angle, orbits, and muzzle, so sharply characteristic of the various
families.
When a wooden skull is used, the mouth should always be closed, unless it
is very necessary to have it open. While it is possible to take moulds from
a real skull, and cast a full set of teeth in plaster or lead, or to set
real teeth, or painted wooden imitations, into a wooden skull, the result
is generally unsatisfactory to a critical eye. When teeth are cast and
painted, the paint always changes color with age, causing the teeth to look
"made up." If you can not have a real skull with genuine teeth in it, for
whatever mammal you are mounting, no one has any right to require that it
be mounted with open mouth, unless the head is to go on a rug instead of a
scientific specimen.
Observe the following precautions in making a skull:
1. Be sure that it has the proper facial angle.
2. Be sure that it is in no way too large. Better have it too small than
too large.
3. Be sure that there are no sharp corners upon it anywhere, lest they come
out next to the skin in mounting, and cause trouble.
When a skull is finished, bore a hole (or two in some cases) through it
from the occiput to the centre of the nose or mouth, for the passage of the
neck irons or wires that are to support the head.
The principles involved in carving skulls apply equally to carving leg
bones, except in this work there is much to be done with the draw-shave and
spoke-shave. Of course they require to be wired together at the joints,
with two wires at each joint, so that the space between them may be
channelled out with a gouge to receive the leg iron.
SEWING UP HOLES IN SKINS.--After thoroughly cleaning a skin, take a
glover's three-cornered needle of the proper size, and a waxed thread from
a ball of strong linen thread, or "gilling twine," and sew up all the
holes that are to be found in the skin. It requires some little ingenuity
sometimes to know just how to trim the edges of a hole so that it can be
sewed up without puckering the skin, but a little experimenting will soon
reveal the way.
If you have to sew up a cut which has no hair to cover it, sew tightly with
a curve-pointed needle, starting the stitches on the inside well back from
the edge, and sewing only three-quarters of the way through the skin. Draw
the edges tightly together. When the sewing is finished, place a flat bar
of iron or wood underneath the seam, and hammer it with a hammer all the
way along. This will flatten the ridge formed by the sewing, and will
render the seam almost invisible.
In order to do fine work, a taxidermist must be quite expert in the use of
the needle and thread. In sewing up skins there are two points to be aimed
at, viz.:
1. To sew strongly.
2. To sew so neatly that the seam will be as nearly invisible as possible.
For general work one must also have common round needles, and No. 30 thread
for very fine sewing, as, for instance, torn eye corners or lips, and holes
in the face where the skin is very thin and there is little hair, or none
at all; three-cornered glover's needles, Nos. 00, 1, 2, 3; and three sizes
of strong linen sewing twine. In the beginning of your work acquire the
habit of being particular about the size of the needle and thread you use
upon a skin, and never let them be larger than necessary. When special
strength is needed, double the thread and wax it with beeswax to prevent
its rotting. Always sew with the ball stitch, _e.g._, from the inside of
the skin to the outside, every stitch. It is often convenient to use a
curved needle, and this can be made by heating a glover's needle to a red
heat in the flame of a spirit lamp and curving it while hot.
HOW TO MAKE LONG NEEDLES.--In making manikins, and also for other purposes,
it is necessary to have a set of needles varying in length from six to
eighteen inches, or even longer. You can buy needles up to ten inches in
length from anyone who keeps upholsterers' supplies, but the longer ones
you must make for yourself. To do this, take a piece of No. 12 or 13 steel
wire and grind one end to a point. For the eye, heat the other end red hot,
flatten it with the hammer, then heat it again, lay it on a bar of lead,
and with a brad-awl and hammer punch an eye in it while hot.
NECK IRONS IN MOUNTING MAMMALS.--Never allow a neck iron to come through
the top of the skull, through the forehead, or through the face anywhere.
The neck iron, which must support the entire weight of the head and neck,
should pass through the back of the skull and into the nasal cavity. Let
the iron extend some inches beyond the end of the nose until the neck is
made, and the head placed in position, for not until then can you tell what
length the neck iron should be. When the head is well-nigh finished, take a
small hack-saw and saw off the neck iron close up to the nasal cavity, so
far from the end of the nose that by no possible chance can the animal
shrink so much in drying that the end of the iron will protrude through one
of the nostrils and into view.
CHAPTER XIV.
PRINCIPLES OF UNIVERSAL APPLICATION IN MOUNTING THE HIGHER VERTEBRATES.
GENERAL REMARKS.--We may assume that anyone who is ambitious to excel in
taxidermic work desires to do so by the high character of his productions,
and the recommendation they silently give him. I am well convinced that any
one who takes the trouble to read this book will welcome the following
principles that apply very generally in mounting the higher vertebrates,
and are, at all events, intended to increase the average of general
excellence and permanency in mounted specimens.
A place in the front rank of taxidermists is not to be easily won. It can
only be accomplished by the studious methods of the sculptor, the
experience and observation of the field naturalist, and a combination of
these with technical and mechanical skill in the laboratory. The painter
paints but one side of his animal, and he is not hampered by bulk or
measurements. The sculptor blithely builds up his clay model, with neither
skin, bones, nor hair to vex his soul. The taxidermist must not only equal
the form of the sculptor's clay model, but he must also make it to fit a
certain skin with exactitude.
The ideal taxidermist must be a combination of modeller and anatomist,
naturalist, carpenter, blacksmith, and painter. He must have the eye of an
artist, the back of a hod-carrier, the touch of a wood-chopper one day, and
of an engraver the next.
With increased skill on the part of the workers has come increased
appreciation on the part of museum officials, and higher salaries. Let me
say to aspiring beginners, there is plenty of room at the top, and money
and glory to spare for those who get there. But there is no royal road to
fortune in this business. Success means years of earnest work and study.
With the understanding, therefore, that we are aiming at perfection, and
that "a little knowledge is a dangerous thing," we will endeavor to call
attention to a few principles which underlie all good work in taxidermy. At
the same time I will try to point out a few of the most common faults
generally observable in mounted specimens.
PERMANENCY.--This is the foundation on which every specimen must be built
in order to be first class. A preserved and mounted animal that has not
enough solidity and stability to stand the test of time is unworthy of a
place in any museum or private residence, for its existence is sure to
terminate speedily in disappointment, disgust, and loss. During the last
eight years the National Museum and American Museum of Natural History have
thrown away and otherwise gotten rid of enough stuffed specimens to stock a
small museum, and all because of poor and unstable taxidermic work only
twenty years ago.
A taxidermist who knows his business can mount a specimen to last ten years
or ten hundred, just as he chooses. If you, like a certain taxidermist I
once knew, believe in "quantity not quality," then you, like him, can use
small and weak supporting irons ("they work so much easier than heavy
ones!"), half clean your skins and skulls, ram a skin full of excelsior,
straw, paper, and rubbish from your dirt-box, sew it up with long stitches
and cheap twine, cram its eyes and nostrils with nasty putty, and insert
the cheapest eyes obtainable. Then, while the specimen may look passably
well during its first six months, by the end of two years its sides will be
a succession of hills and hollows, its seams will be ripped and gaping wide
open, its nose will be shrivelled up and shapeless, its ears will look like
dry autumn leaves; it will lean over helplessly to one side, and will also
have settled down upon its feet until they are shapeless deformities.
This is no fancy picture, for it fairly represents the condition of many a
buffalo, deer, and moose that I have been called upon to either dismount,
remount, or destroy. A dishonest taxidermist may slight the interior work
of a specimen and have it escape detection for six months, or even a year,
but time soon tells the story. Dishonest or careless work, like murder,
will out. In a bird, it expresses itself in a look of roughness, and a
general falling away from grace at all points.
To secure perfect stability and permanence in a mounted specimen, observe
conscientiously the following principles in its construction:
1. Pare every skin down thin, so that its shrinking power will be reduced
to a minimum. This will prevent its seams from opening.
2. Poison with the utmost thoroughness, so that even though the specimen
should chance to stand unprotected for years where insect pests are
thickest, they can find nothing to feed upon in its hair or feathers.
3. Use heavy supporting irons or wires, as heavy as the specimen will
accommodate without sacrificing the form and position of legs and feet. The
fault of using the lightest possible supports is entirely too common, and
is so thoroughly reprehensible in a taxidermist that it becomes a vice.
4. Make the mechanical structure of every specimen (_e.g._, the fastening
together of the body, limbs, head, neck, and tail), so firm that the
rigidity of all is complete. It is then, and only then, in your power to
place any member of the body in a desirable attitude and have it remain
fixed.
5. Every portion of the skin should rest upon a _firm, smooth_ surface of
clay, excelsior, straw, or tow, according to circumstances. If there are
lumps under the skin, they will appear soon after it is dry, and destroy
its smoothness. If there are hollows, the result will be the same.
6. The larger the specimen the thicker is the skin, and consequently the
harder and more unyielding should be the material it rests upon. Do not
make a manikin with hoop iron and burlap, and a little loose filling
between that and the skin, for specimens so mounted nearly always come to
grief. If you stuff a skin with straw, excelsior, or tow, pack the filling
in a solid mass, for with the lapse of time all such materials are bound to
shrink, no matter how hard you make them at first. The shrinkage of straw
is often remarkable and highly disastrous.
ATTITUDE.--On this subject no fixed rules can be offered. To one fact,
however, which should always be borne in mind by the preparator, I must
call special attention, and that is as follows: Animals of all kinds, even
in a state of nature, and entirely of their own volition, often assume
attitudes that are highly ungraceful, unpleasing to the eye, and anything
but fairly representative of the creature's form and habits. This being the
case, do not make the mistake of concluding that because you have seen a
particular animal assume a particular attitude, it is "natural," and
therefore you can do no better than to reproduce that attitude in the
specimen you are mounting. No, a thousand times no. This mistake will lead
to the reproduction of many an ugly attitude, even though like life itself.
Every animal is capable of assuming scores of different attitudes, and from
all these you should _choose the one which is most strikingly
characteristic of the subject_, most truly representative, and which does
the animal the same sort of justice that you seek at the hands of the
artist when you go to have your own picture taken. On such occasions you do
not lounge ungracefully, nor "stand stoop-shouldered," nor look listless;
you stand erect, at your full height, and look your very best. Make your
animal do the same.
For your own picture you do not assume a violent and tragic attitude, nor
anything strained. You stand or sit at ease, quietly but intently
regarding something in particular; or your attitude may with equal
propriety represent a moment of rest in the course of some quiet action.
Pose your mounted specimens according to the same principles, and the
results will be most satisfactory to all. The choice of an attitude depends
wholly upon your artistic instincts, "upon your eye," so to speak. Choose
that one which is most graceful or grand, and is at the same time truly
characteristic of the subject. To my mind, the attitude taken by an animal
when startled by visible or suspected danger, is the one _par excellence_
in which it appears at its best when mounted. Under such conditions the
animal always stands fully erect, head aloft, and with every sense keenly
on the alert. The next best attitude is that which represents an animal
quietly walking or climbing, according to its habits and modes of
progression.
The subject of groups and grouping will be considered in full later on in
this work.
PROPORTIONS.--On this point a single observation will be sufficient. The
taxidermist often receives, from the zoological gardens and menageries,
specimens that are very thin in flesh. In mounting an animal, do not let
your knowledge of anatomy run away with your judgment, art, and even nature
itself, by producing a tiger, panther, zebra, or buffalo with all its ribs
showing, and its scapula, pelvis, and vertebral column all standing out in
bold relief. Unless the individuals of a given species are always scrawny,
I pray you, for the sake of truth and justice, do not make your solitary
representative of that species look like a candidate for special honors at
a bone-yard.
Let me assure you, on the honor of a hunter, that animals in a state of
nature are nearly always well fed and plump-looking, and show very few
bones. It is easy to make ribs on a clay-covered manikin, but do not do it
on a wild animal, unless you deliberately intend to produce a starveling.
According to its nature, make every animal look well-fed and in good
condition, _but not fat_. It seldom happens that a wild animal in a state
of nature grows really fat, but it is still more seldom that one looks
under-fed and poor. If fatness is a special characteristic of a species,
then fat let it be, but scrawny never.
Above all things, avoid in your birds and quadrupeds the half-filled body
which makes the subject look as if it had been eviscerated. The abdomen is
always convex, not concave.
THE USES OF CLAY AS A FILLING MATERIAL.--The value of clay in the mounting
of mammals, reptiles, and fishes can hardly be overestimated. Previous to
1880 its use among the taxidermists of my acquaintance was unknown, and
when its value was discovered and put to general use by the writer, in the
year mentioned, many of my rivals predicted all manner of evil from it.
They declared it would destroy skins, go to dust within them, become soft
mud in damp weather, crack, etc. I persisted in its use, disproving all
evil prognostications, and now its general use really marks a new era in
American taxidermy. By means of this common and cheap material it is not
only possible but easy to mount a horse, a seal, a hairless dog, a turtle,
snake, fish, or any other animal, with absolute accuracy in every detail of
form and size. Not only is this true, but, so far as I can discover, there
is no other material than clay with which these results can be
accomplished. For covering manikins, coating the skulls of large animals,
and for filling in the nose, mouth, eyes, and ears, it is everything that
could be desired. With it a stretched skin,
"A world too wide for his shrunk shank,"
can be worked together on the clay-covered manikin, and reduced in size
until it fits without the slightest visible wrinkle, or any cutting out
such as used to be necessary by the old methods.
To prepare clay for use, take the clean, worked chunks of soft potter's
clay (which costs about two cents per pound, and should be quite free from
sand and grit), put the right quantity in a pail, and pour a little water
upon it. With the hands knead it until the water is taken up, and it
becomes as soft as dough. It will, of course, be quite sticky, and in this
state is altogether too soft to use except to cover a large manikin, in
which case it must be soft enough to spread easily with the hand. For
ordinary use, however, chop up finely, with the hatchet, some clean hemp
tow of long fibre, and mix it thoroughly with the clay, which can be done
only with the hand. This makes the clay more stiff, about like soft putty,
and of the proper consistency for filling into feet, cheeks, eyes, mouth,
nose, etc. If the clay is too soft, you will have difficulty in making it
retain the proper form under the skin. If it is too stiff, it balls up, and
you can not work it along under the skin from one part to another. When you
learn to make it of just the right consistency it works to perfection, no
matter where you put it, and will forever retain the form your fingers give
it by pressure from without. Elsewhere will be given more detailed advice
in regard to the various uses of clay.
COLORING.--The time was when American curators held it sacrilege to paint
the soft parts of birds, and the hairless portions of certain mammals. For
my part, I have always fought that idea unconditionally, in season and out
of season, and I am glad to say that within the last eight years it has
been utterly abandoned. Clearly, it is better to reproduce the colors of
soft parts as accurately as one can, rather than let them remain in a
colorless, dry, and mummified condition, hideous to the eye and meaningless
to the understanding. By all means let us color everything that has color
in life, though the heavens fall. Ascertain in some way what the color
should be (this can often be done by reference to books with colored
plates), then paint accordingly. Paint with turpentine and oil, rather than
with oil alone, which leaves an unnatural gloss. You can tone down any oil
color, however, by stippling it with a stipple brush dipped in a pan of
dry color, or plaster Paris. The taxidermist who can paint the exposed
parts of his specimens accurately and artistically has a very powerful
advantage over all those who can not. This subject will also receive
special attention elsewhere.
GENERAL FINISH.--In all work on specimens, cultivate a delicate and
artistic touch, and then leave its impress upon everything you do. Do not
leave a specimen looking as if a coal heaver had finished it. Work at it,
and keep on working at it until it is perfect; and then go back to it the
next day, and work at it some more! There is no inferno too deep or too hot
for a slovenly, slatternly taxidermist. The fault with such workers usually
lies not so much in their lack of skill as in their lack of patience and
the dogged stick-to-itiveness that conquers all difficulties, no matter
whether they come singly, in platoons, or by divisions. Delicacy is just as
essential in the production of good work as originality and strength.
CHAPTER XV.
MOUNTING SMALL MAMMALS.
In attempting to give the beginner a fair start in the general work of
mounting small mammals of all sorts, from mice up to small foxes, I will
describe in detail the entire process of mounting a typical specimen, which
in this instance will be a squirrel. This will embody all the general
principles involved, and after having laid this foundation we will proceed
to consider exceptional cases, and describe the manner in which they must
be met. The exceptional cases are bats, rabbits, young animals of the
smaller species, and a few others.
We will assume that the subject before us is either a "dry skin" which has
been fully relaxed, scraped, and rendered perfectly pliable and elastic, or
else "a fresh skin," _i.e._, one which has been preserved in our
antiseptic solution (the salt-and-alum bath) or possibly in alcohol, and
has therefore never been dried. For the sake of the beginner's courage,
which should never be taken out of him at the very first onset by putting
him on a dry skin of doubtful quality, we will take the skin of a fine,
old, gray squirrel (_Sciurus carolinensis_) which lies in the bath waiting
to be immortalized--or something else.
It may easily happen that for good and sufficient reasons the beginner has
no salt-and-alum bath, and can not prepare one. In that event the skin can
be mounted immediately after it is taken off the animal, only it is
necessary to apply to it _after_ the arsenical soap, as directed hereafter,
a copious quantity of powdered alum. If you have no arsenical soap, then as
you proceed with the mounting moisten the inside of the skin with water,
and rub on powdered alum and arsenic, mixed in equal parts, and be sure
that the skin is everywhere coated with it eventually. This leaves the fur
dry and clean, and will save you the trouble of drying and dressing it.
On taking our squirrel skin from the bath to mount it we find its texture
is firm, and it is somewhat shrunken in size, so that when it is filled out
it will not stretch all out of proportion. If either in haste or
carelessness you have left a layer of flesh upon the skin, pare it off
until the inside of the skin is quite clean. If any holes have been cut by
bullets or knives, sew then up from the inside with a strong linen thread
and a No. 3 glover's needle--three-cornered.
Now for the wires. Measure the leg bones from the sole of the foot to the
end of the thigh-bone, add three inches for what the wire must project
beyond the sole of the foot, five inches more at the other end, and cut a
No. 15 annealed iron wire[8] of the length thus obtained, for each hind
leg. The length of the wires for the forelegs is obtained in the same way.
Thus for our squirrel, the wires for the hind legs must be fourteen inches
long, and for the forelegs twelve.
Cut another No. 15 wire twice the length from the back of the head to the
root of the tail, and this will be the body wire eighteen inches long. The
tail wire must be smaller, No. 17, long enough to reach from the tip of the
tail to the centre of the body--seventeen inches. Straighten all these
wires carefully, lay them together on the table, and remember the purpose
of each. If they are rusty, rub them with sand paper. File one end of the
tail wire to a tapering point, for the tip of our squirrel's tail is very
slender.
We are now ready to make one of the legs, and will begin with one of the
hind legs. Take one of the two longest wires, pass one end of it through
the slit in the skin at the bottom of the foot, let it project three inches
beyond the sole of the foot, and up into the skin of the leg. Now bend the
wire until it fits closely along the under side of the leg bones as seen in
the accompanying illustration. Tie it firmly with linen thread to the bones
of the foot, to the _tibia_ and the _femur_, as seen in the accompanying
illustration.
[Illustration: FIG. 25.--Leg-making and Wiring.]
Now take fine, clean tow, of good long fibre, and, beginning at the foot,
proceed to wrap it around the leg bones, smoothly and evenly, to replace
the muscles which have been cut away. The lower part of the leg is flat on
the inside and round on the outside, almost bare of flesh at the ankle.
Remember always that the flesh on the "calf" of the leg, and the forearm,
lies _behind_ the bones, swelling out toward the back and the inside of the
limb, and in front the skin lies upon the bone itself. Observe this, and
build up the muscles accordingly. The thigh is broad and much flattened,
rounded on the outside only, as you must have noticed when you skinned it
and cut off the flesh, and the knee-pan is prominent. To make the leg this
shape, first wind some tow around the thigh bone, then make up a little
roll of tow a little larger than your forefinger, place it along the under
side of the thigh and wind it fast there with tow. By a judicious
continuation of this process, you can make the thigh of the proper width
and flatness both above and below the bone. At no point is a squirrel's
thigh more than three-fourths of an inch thick, and the calf, the arm, and
the forearm are even less. By reference to the tracing made of the animal
in the flesh, you will be able to tell the width of the legs at all points
and correct your work all the way along.
In all thin-haired animals the tendon of the heel must be made by drilling
a hole through the end of the heel-bone, passing a small wire through for
half its length, then twisting the wire together half-way up to the knee.
Wind a little fine tow around this wire, gradually increasing the quantity
from the heel upward until the false tendon is complete, and the upper end
is wound in with the tow which forms the lower part of the thigh. In small
mammals which have long, thick hair, as our squirrel for example, it is not
necessary to make the tendon, as it does not show. Remember there is no
flesh on the upper part of the foot-bones, but considerable underneath.
It is not best to make the legs extremely hard, or they will be difficult
to bend, but at the same time the tow must not be put on in a loose,
slovenly manner. Avoid making the legs too large; the opposite extreme is
the lesser evil of the two.
When the leg is finished, anoint the skin of that leg with arsenical soap,
rub either a little wet clay or thick soap over the tow leg so that it will
slip into the skin easily, then turn the skin up over it and adjust it from
the foot up. If the leg does not fit, turn the skin back and alter its
shape until it does fit perfectly. This done satisfactorily, insert a
little clay or finely chopped tow in the bottom of the foot, bend the wire
so that it leaves the foot _at a right angle_, sew up the cut, and you are
ready to proceed in like manner with the three remaining legs. Be sure to
make both legs of each pair precisely alike if you wish to have a
healthy-looking animal when finished.
Having made all the legs, the next thing is the tail. Take some of your
finest tow in your right hand, the tail wire in your left, begin at the
pointed end, and by turning the wire constantly from left to right, let it
wind up the tow which runs between your right thumb and finger. Make the
tail of a regular taper, perfectly smooth, and not too large. Try it in the
skin occasionally to insure accuracy. If the first one is a failure,
discard it and make another. When at last you have what is required, anoint
the inside of the tail skin with arsenical soap, slip the false tail into
its place, and if the tail has been slit open, sew it up neatly all the way
along, commencing at the tip.
Now punch a small hole in the back of the skull a little above the
occipital opening, pass the end of the body wire through it, force the end
through into the nasal cavity and on out at the end of the nose. Let the
end of the wire also pass through one of the nostrils of the skin for about
two inches. Now put some soft clay on the sides of the skull and jaw to
replace the muscles which have been cut away, and fill the orbits with the
same material. Anoint the skin of the head and neck with the arsenical
soap, turn it back over the skull, and when the skull is once more in its
proper position in the skin, which can best be determined by noticing
whether the eye opening comes over the centre of the orbit, drive a tack
over each eye through the skin and into the bone.
Another tack at the top of the head will also do good service in holding
the skull in its place while the grand struggle with the body is going on,
for the head is the last thing finished. Life is too short and space too
valuable to allow me to explain fully why all these things must be done,
but if you neglect any of these simple directions you will very soon find
out why they were given.
The legs and tail are wired and made, the skull is in its place, with one
end of the body wire passing through it, and we are now ready to wire all
the parts of the animal together. The skin lies on the clean table before
us, right side out, with the legs in the same position as when we drew the
outline. Bend the inner ends of the foreleg wires back from the head of
the humerus at an obtuse angle, and let them cross each other like the
limbs of an X, as seen in the accompanying figure. At the point where they
cross each other, turn a little ring in the body wire, six inches from the
end, just large enough for the two wires to pass through easily. For this
purpose you will find a pair of round-nosed pliers convenient. Pass the end
of each foreleg wire through the ring, and let them cross again, with the
wire of the left leg underneath the other.
[Illustration: FIG. 26.--Wiring Together.]
Now refer to your outline, measure the distance between the extremities of
the toes, and it will tell you exactly how to adjust the leg wires so as to
get the right distance between the two ends of the humeri, or, in other
words, the shoulders. The wire between the head of the humerus and the ring
represents the scapula, and, if rightly measured, will enable us later on
to pose the forelegs with ease and success.
Now, with the round-nosed pliers in the left hand, grasp the three wires
firmly at the ring, lay hold of the two leg wires with the flat-nosed
pliers and give two complete turns to the right, twisting the wires
together as tightly as possible. Bend up the body wire to one of the leg
wires, and, leaving out the other, give these two a couple of turns. Take
the other leg wire and body wire and give them a twist. If the legs are now
_solidly_ together, it is enough, but if they are not, this twisting
process must be continued until they are perfectly firm. No looseness, if
you please.
This done, straighten out the body wire once more, arrange the skin as
before, according to your outlines, and you will soon see that the ring for
the hind legs must be turned about five inches below the first one. The
ends of the hind-leg wires are bent slightly forward (toward the head) from
the ends of the femora, and also cross each other in the ring. After
getting the hind legs the right distance apart, give the wires two turns as
before, then bend the free end of the body wire straight up and over until
it points toward the head. Proceed with it precisely as with the other leg
wires until the hind legs are immovably fixed on it. Now give the free ends
of the wires each a turn around the middle of the body wire and thus fasten
all together, forming a backbone of twisted iron wire.
The end of the tail wire must pass under the hind-leg wires (as the skin
lies on its back), and after giving a turn or two around the wire backbone,
tie it fast with strong twine. The tail must be as firmly fixed upon the
body wire as though it was soldered there. This done, wrap a goodly
quantity of tow tightly and smoothly around the wire backbone, so that the
numerous ends of wire, and the irregularities in the mass of twisted wire,
will not cause trouble when we come to fill the body. Now that you no
longer need to put your hands inside the skin, anoint it most thoroughly
with the soap, from the back of the head to the base of the tail. While the
skin is absorbing the soap, take a hatchet and chop up finely a quantity of
coarse tow. With your longest forceps, cover the inside of the skin with a
layer of cut tow, placing it between the wires and the skin. It is highly
important to have a good thick cushion of it next to the skin at the
shoulders, hips, and along the back.
[Illustration: FIG. 26_a._--The Legs Wired Together.]
This is the time to give the animal the attitude it is to have when
finished. All the members are now completely under control, and we can give
the animal any pose we wish. Bend up each leg at a right angle to its
present position, making the bend abruptly at the head of each femur, and
thus leave between them the same distance that separated them when they
joined the pelvis in life. Likewise bend up the foreleg, by making nearly a
right angle in the leg wire at the head of each humerus, and leave the
proper space between the shoulders. With the play that is given to the
forelegs, by means of the distance left between the shoulder point and the
ring, we are able to adjust the forelegs with the greatest freedom, to move
each shoulder either up or down, and increase or lessen the distance
between them at will.
The most pert and characteristic attitude of a squirrel is sitting up on
its haunches, either on the alert, eating something held in its paws, or,
perhaps, washing its face with its paws. This attitude is rather difficult
to get, but it is well worth trying for. Bend each hind leg at the knee
until the thigh touches the calf and rests upon it. Bend the ankle-joint
until the foot makes an acute angle with the calf. Make a very decided
curve in the backbone, so as to throw the body well forward between the
knees, which must come nearly opposite the centre of the body. Push the
hind legs up into the body so that the squirrel can sit upon his tail.
The elbows drop down until they almost touch the knees, which is partly
accomplished by curving the back. Just below the shoulders the backbone
must be curved, to throw the head and shoulders up, and hold them well
erect. Give the head the pose you wish it to have, slightly turned to one
side, let us say.
The next step, a very important one, is filling the body. If you do not do
it intelligently, your squirrel will need to find a grave in the ash
barrel. The mechanical part of this filling process is exceedingly simple,
and everything, or nearly everything, depends upon how much you know of the
anatomy of the animal before you. This is a private matter between yourself
and _nature_. Your hand will nearly always be able to keep up with your eye
if you give it a fair chance.
With your long forceps, which work like a dextrous thumb and finger eight
inches long, pick up the chopped tow, and little by little insert it in the
skin where it is needed. First fill out above the backbone until you get
the desired outline, in profile, of the back and shoulders from tail to
head. Then fill out the shoulders and form them properly. Fill in the neck,
first around the base of the skull, and sew up the neck skin from the end
of the cut downward for about two inches, and without cutting off your
thread insert more chopped tow in the neck and shoulders, packing it
firmly, if you have the proportions right. Do not allow the tow to roll up
into wads and make the skin full of hills and hollows on the outside. The
pressure of the tow on all points of the skin should be the same, and the
filling must be packed firmly and evenly, so that the finished animal will
keep its shape tenaciously in the struggle for existence, and not collapse
at a firm touch.
One secret of success in filling the body lies in gradually and equally
filling out the _entire body_ to fair proportions before finishing any one
part. Give the animal its exact attitude, then proceed. If there is an
apparent lack of skin at any particular point, attack that first, and fill
it out. You will soon find how easy it is to draw skin from one part of the
body to another by judicious filling.
Having finished the neck and shoulders, leave that part and go to the
haunches. Fill around the base of the tail, the hips, the upper part of the
thighs, and the abdomen. Be careful to make both sides alike. Commence at
the root of the tail and sew up the opening for about two inches, without
catching the hair in your stitches, after which you may bore two small
holes in a pine board, the proper distance apart, pass the two hind leg
wires through, and set the little animal up. This is only a trial trip, and
if you find the feet are not the proper distance apart (or the squirrel
does not walk properly, if you have put him in a walking attitude), or does
not sit properly, take him off the board and remedy the defects. When you
have corrected his attitude, proceed with the filling, sewing up from both
below and above, until the body is properly shaped, filled full of tow, and
the opening entirely sewn up.
Now comb the tow out of the damp fur, and, if it is dirty, wash it with
washing soda, soap and water until it is thoroughly clean. Place the animal
upon its board pedestal, and correct the attitude with the utmost care
before you bend the wires up underneath the board and clinch them fast. If
the specimen is even a moderate success thus far, we will go on with it.
If the animal you are mounting is a tree-climber, and you wish to mount it
upon a tree limb, select one for the purpose, and, according to your desire
to have it nearly perpendicular, slanting, or horizontal, saw it off at the
lower end, plant it firmly upon a rough board pedestal, and fasten it by
putting two long, stout screws through the board and up into the base of
the branch. Put your specimen upon the branch as nearly in position as
possible, mark the places where the holes should be bored, and bore them
with a bit of the proper size. You can then run the ends of the leg wires
through, draw the feet down closely, and clinch the wires on the opposite
side.