TURBO EBURNEUS. Fig. 15. T. quinque anfractibus ventricosis apertura

subrotunda. The five spired ventricose turbo with a roundish mouth.

The colour white and opake. From Reculver: very rare.

TURBO STRIGATUS. Fig. 16. T. tribus anfractibus primo strigis tribus

transversis apertura subovata. The three spired turbo, the first spire

with three transverse ridges and a suboval aperture.

The colour opake white. From Seasalter: very rare.

TURBO ALBIDUS. Fig. 17. T. turritus septem anfractibus strigatis

apertura ovali. The taper turbo with seven ridged spires and an oval

aperture.

The colour opake white. From Sandwich: rare.

TURBO CARINATULUS. Fig. 18. T. turritus carinatus septem anfractibus

apertura coarctata marginata. The taper carinated turbo with seven

spires and a contracted marginated aperture.

The colour opake white. From Sandwich: very rare.

TURBO CLATHRATULUS. Fig. 19. T. clathratus sex anfractibus apertura

ovali marginata. The barred six spired turbo with an oval marginated

aperture.

The colour opake white. From Sandwich: exceeding rare.

TURBO CRASSUS. Fig. 20. T. crassus clathratus quinque anfractibus

apertura rotunda marginata. The thick barred turbo of five spires and a

round marginated aperture.

The colour opake white. From Sandwich: very rare.

TURBO PUNCTATUS. Fig. 21. T. turritus perversus novem anfractibus

punctatis apertura coarctata. The reversed taper turbo of nine dotted

spires and straitened aperture.

The colour light-brown opake. From Sandwich: not common.

TURBO SHEPEIANUS. Fig. 22. T. sex anfractibus reticulatis apertura ovali

submarginata. The six spired reticulated turbo with an oval

submarginated aperture.

The colour semipellucid white. From Shepey island: very rare.

TURBO SANDVICENSIS. Fig. 23. T. tribus anfractibus reticulatis apertura

unidentata. The three spired elegantly reticulated turbo with a one

toothed oval aperture.

The colour pellucid white. From Sandwich: exceeding rare.

TROCHUS.

_THE TOP-SHELL._

TROCHUS FUSCUS. Fig. 24. T. umbilicatus quinque anfractibus marginatus

apertura subrotunda. The five spired umbilicated marginated top-shell

with a roundish aperture.

The colour opake brown. From Sandwich: common.

BUCCINUM.

_THE WHILK._

BUCCINUM OBTUSULUM. Fig. 25. B. ampullaceum tribus anfractibus apertura

ovali. The bellied whilk of three spires with an oval aperture.

The colour opake white. From Faversham Creek: very rare.

BUCCINUM LONGIUSCULUM. Fig. 26. B. turritum quinque anfractibus apertura

ovali. The taper whilk of five spires with an oval aperture.

The colour white semipellucid and glossy. In Faversham Creek only; but

not uncommon there.

VOLUTA.

_THE VOLUTE._

VOLUTA ALBA. Fig. 27. V. alba opaca longitudinaliter striata. The white

opake volute. From Sandwich and Shepey island: not uncommon.

This shell resembles Mr. Pennant’s voluta Jonensis, but differs in the

form of the aperture, as well as in the size.

BULLA.

_THE DIPPER._

BULLA REGULBIENSIS. Fig. 28. B. crassa apertura medio coarctata. The

thick dipper, with a compressed aperture.

The colour white and opake. From Reculver: very rare.

NAUTILUS.

_THE CHAMBERED NAUTILUS._

NAUTILUS BECCARII. Fig. 29. N. spiralis umbilicatus geniculis

insculptis. The spiral umbilicated nautilus with deep joints.

The colour, while the fish is alive, is a fine pellucid crimson; when

dead, is white. It is found alive on the fucus vesiculosus, and is a

very common shell on all the coast, and seems to be an universal litoral

one, by the numbers found at Rimini, and in the sand of the South Seas.

Lin. S. N. p. 1162, No. 276. Nautilus Beccarii. Planch. Tab. 1. Fig. 1.

Gualtier, Tab. 19. Fig. H, H, I.

NAUTILUS CRISPUS. Fig. 30. N. spiralis geniculis crenatis. The spiral

nautilus with crenated joints.

The colour opake white. The finest specimens are from Shepey: not

uncommon.

Lin. S. N. p. 1162, No. 275. crispus. Planch. T. 1. f. 2. Gualt. T. 19.

f. A. D.

NAUTILUS CALCAR. Fig. 31. N. spiralis apertura lineari geniculis

elevatis. The spiral nautilus, with a narrow aperture and raised joints.

The colour opake white. From Shepey island: not common.

Lin. S. N. 1162, No. 274, calcar. Pl. T. 1. f. 3, 4. Gualt. T. 19. f. C.

B.

NAUTILUS LÆVIGATULUS. Fig. 32. N. spiralis geniculis lævibus. The spiral

nautilus with smooth joints.

The colour semipellucid, white and glossy. From Sandwich and Seasalter:

not common.

NAUTILUS DEPRESSULUS. Fig. 33. N. spiralis utrinque subumbilicatus

geniculis depressis plurimis. The spiral subumbilicated nautilus, with

many depressed joints.

The colour opake white. From Reculver: very rare.

NAUTILUS UMBILICATULUS. Fig. 34. N. spiralis umbilicatus geniculis

sulcatis. The umbilicated spiral nautilus, with furrowed joints.

The colour opake white. From Sandwich: not common.

NAUTILUS CRASSULUS. Fig. 35. N. spiralis crassus utrinque umbilicatus

geniculis lineatis. The thick spiral doubly umbilicated nautilus, with

fine joints.

The colour opake white. From Reculver: exceeding rare.

NAUTILUS LOBATULUS. Fig. 36. N. spiralis lobatus anfractibus supra

rotundatis subtus depressioribus. The spiral lobated nautilus, with the

spires rounded on the upper side, and depressed on the under.

The colour opake white. From Whitstable: not common.

NAUTILUS CARINATULUS. Fig. 37. N. oblongus carinatus apertura lineari

ovali. The oblong carinated nautilus, with a narrow oval aperture.

The colour whitish, transparent like glass. From Seasalter and Sandwich:

very rare.

NAUTILUS SUBARCUATULUS. Fig. 38. N. subarcuatus geniculis exertis. The

bending nautilus with raised joints.

The colour opake brown. From Shepey island: very rare.

MYTILUS.

_THE MUSCLE._

MYTILUS PHASEOLUS. Fig. 39. M. lævis valvulis antice inflexis. The

smooth muscle, with the valves inflected in front.

The colour brown and glossy. From a fresh water stream near Faversham:

common.

MYTILUS PUNCTATULUS. Fig. 40. M. subrhombiformis punctatus. The

subrombic dotted muscle.

The colour pellucid white. From Sandwich: common.

MYTILUS DISCORS. Fig. 41. M. discors areis tribus distinctis. The

divided muscle.

The colour opake brown. From Sandwich: not common.

Lin. S. N. 1159, No. 261. Da Costa Br. Conch, p. 221. Tab. 17. f. 1.

where it is exactly described, and as badly engraved.

ANOMIA.

_THE SCALE._

ANOMIA SQUAMULA. Fig.42. A. squamula. The scale anomia.

The colour opake white and glossy. From Sandwich: not uncommon.

Lin. S. N. 1151, No. 221. This shell is well described by Da Costa; but

neither he, or Mr. Pennant, have caused it to be engraved.

ARCA.

_THE ARC._

ARCA MODIOLUS. Fig. 43. A. oblonga striata antice angulata. The oblong

striated arc, with the foreside angulated.

The colour opake white. From Sandwich: not uncommon.

Lin. S. N. p. 1141, No. 171. Arca Modiolus.

CARDIUM.

_THE COCKLE._

CARDIUM MURICATULUM. Fig. 44. C. subcordatum antice muricatum. The heart

cockle, with the front muricated.

The colour opake white. From Shepey island: not uncommon.

LEPAS.

_THE ACORN-SHELL._

LEPAS STRIGATULUS. Fig. 45. L. balanus striatus apertura obliqua. The

striated acorn-shell, with an oblique aperture.

The colour light brown. From Sandwich, on the roots of sea-weeds, the

finest specimens on lobsters: not uncommon.

ECHINUS.

_THE SEA-URCHIN._

ECHINUS LOBATULUS. Fig. 46. E. subrotundus planus lobatus. The flat

roundish lobated echinus.

The colour opake white. From Reculver: rare.

ASTERIAS.

_THE STAR-FISH._

ASTERIAS TRIRADIATA. Fig. 47. A. triradiata lævis. The smooth

three-rayed star-fish.

The colour white, transparent as glass. On all the different shores that

have been examined.

Having thus described a few specimens of those pleasing microscopical

objects, minute shells, I shall agreeably to the intimation given in the

note to page 613, proceed to

A DESCRIPTIVE LIST OF A VARIETY OF VEGETABLE SEEDS.[155]

[155] To the names as given by Dr. Parsons, those adopted by Linnæus

are here added.

LITHOSPERMUM OFFICINALE. Plate XV. Fig. 1. Ibid. Linn. Gromwell. This

seed is in figure exactly like a human heart without the auricles, but

has no flat or depressed part on its sides; it is pretty circular round

its thickest part, and terminates in a blunt cone. At the thickest

extremity there is a circular roughness, which is the umbilicus, and

from thence to the cone on the shortest side it is bisulcated

longitudinally; so that the space between the sulci is a kind of ridge,

nor do either sulci or ridge extend to either extremity of the seed; the

rest of the surface is smooth and polished, the ground a light

ash-colour, with a shade or cloud of yellow or brown.

These seeds are very hard, and the ash-coloured shell is brittle like

that of a hen’s egg; which being broken, appears to be lined with a

light olive-coloured uniform membrane, which encloses a nucleus of a

Spanish snuff-colour, pretty smooth, and of the same form with its

shell, being in close contact with it all round.

The natural size of a middling grain of this seed is about the eighth

part of an inch long, and the ninth of an inch in diameter at the

roundest part.

CYMINUM. Fig. 2. Cuminum C. Linn. Cummin. This seed is double, though

fixed side by side to one little stem; both which while together seem

like one, and are ribbed in an uneven manner longitudinally, having

great numbers of little threads or fibres sticking out all over them,

which makes them look hoary. They are thick in the middle and run to a

cone at each end. At the upper extremity there is an appearance like a

bifurcation in the stilus, each of them belonging to its particular

seed; this appears when the seeds are separated.

These seeds are of a darkish straw-colour, the little threads or fibres

being much lighter than the body of the seed. Each of these seeds

contains in it a kernel of an olive-colour, and exactly in shape like a

waterman’s boat, and of the same proportion, having a concave and convex

side; the latter has a blunt ridge like the keel of a boat, and the

former has a white line from one end to the other, which proves to be a

ridge, to which the stilus that rises from the little stem of the seed,

adheres to support it.

When the seeds are together upon the stem their length is about the

fifth part of an inch, and about an eighth part of an inch in the

broadest part.

PAPAVER ALBUM. Fig. 3. P. somniferum. Linn. Poppy. This is a little

yellowish white seed exactly resembling in shape a sheep’s kidney,

having a yellow place about the hollow part, which is its umbilicus,

analogous to the hollow part of the kidney into which the blood-vessels

(emulgents) enter.

If it be viewed on the back or convex part, concealing the hollow, it is

exactly shaped like an egg, having one end somewhat rounder than the

other.

All over its surface it has superficial cells, formed by ridges that

rise from the surface, which are some heptagons, some pentagons, but for

the most part hexagons, though not precisely of equal sides; and the

bottoms of these cells seem to be very porous.

The seeds seem very light and springy, as a gentle blast of ones breath

is capable of blowing them away, or a touch of any thing of making them

roll a considerable way. As to their size, they are not above a

twenty-fourth part of an inch long, and about a thirtieth part broad or

thick.

CARDUUS BENEDICTUS. Fig. 4. Centaurea Benedicta. Linn. Blessed Thistle.

The body of this seed is about twice as long as it is thick, is round

and shaped much like a nine-pin, only instead of being small at the

upper end, it has a stricture, from whence arises a beautiful crown of

ten angles or points, out of which come also ten aristæ or spiculæ like

ivory, about the length of the body of the seed, running taper upward,

and set round in an uniform manner. Within the circle of these long

spikes there are ten more, which are but very short, and of the same

colour and consistence with the others. When these are all plucked off,

the vestiges of the circles they form appear in the upper surface of

the crown; in the middle of which a little process arises, but very

superficially. That part which appears circular is white, and the rest

of this surface, of the corona, of the same colour with the rest of the

body of the seed, which is a sort of an olive-colour.

The body of the seed is of the sulcated kind, and looks exactly like a

fluted pillar, and the surface shines as if varnished with some gummy

substance.

At the lower or small end of this seed, there is an opening reaching up

above a third of the length of the body of the seed, which discovers a

white root, shaped like a cone at the bottom, and rising thicker by

degrees till it divides into three limbs; these run taper upwards, till

they are lost in the parenchyma of the seed, which at the place of their

entrance appears somewhat fungous, but is more compact and clammy

through its substance.

The length of the body is more than two eighths of an inch, and the

aristæ exactly the same length. The corona is its umbilicus.

PLANTAGO. Fig. 5. P. Major. Linn. Plantain. By the imperfect idea we

have of this seed from its minuteness, it may seem like a flea, as any

small speck would, if a little oblong; yet its form is not constant,

that is, there are scarce two of them precisely alike, some being

perfectly elliptical, some with blunt angles, and some approaching a

spheroid. They have a whitish mark on one side, which is the umbilicus

of the seed, from whence the first rudiments of the plant spring, and

the surface is entirely granulated over, and has a general appearance

like some kinds of plumb-stones; the surface also shines a little, as if

oiled or moist, and their colour is brown. One of the seeds cut

transversely appears to have the shell or covering pretty strong in

proportion to its size, which contains a parenchyma that is very porous

and succulent. It is about a sixteenth part of an inch long, and a

twenty-second broad.

STAPHIS AGRIA. Fig. 6 and 7. Delphinum S. A. Linn. Stavesacre. The seeds

of this plant are rough and angular, inclining to a triangle, although

imperfectly so. They may be considered as having a basis or apex; the

basis is thick and clumsy, and the apex runs to an angular point, which

point is the umbilicus of the seed, out of which its first rudiments

arise; it also has a convex and a plane or concave side; the former,

Fig. 7, is rough, by reason of its being covered all over with porous

cells, the ridges of which are also depressed or indented with rough

pores, and granulated as if stuck full of sand. The concave surface,

Fig. 6, is also rough, but not in the same manner, and so are the sides,

which have a little flatness; these also are porous and sandy, and

before the microscope, shine, and are coloured like dirty brown

sugar-candy. The concave surface, notwithstanding the roughness, has one

longitudinal ridge, and sometimes more, running from the basis to the

apex, which has the same granulated surface with the rest. It contains a

parenchyma, which is of a yellowish grey colour, and is moist and

succulent.

This seed is in its natural size about two eighths of an inch long from

its basis to the apex, and near as broad; however, some are broader in

proportion to their length than others, and they are one eighth of an

inch thick.

ANISUM. Fig. 8 and 9. Pimpinella A. Linn. Anise. Two of these seeds grow

together upon one little stalk; when they are pulled asunder, they

appear to have a flat and a convex surface. On the convex surface, Fig.

8, each seed has three ribs placed at equal distances from one another,

which are porous and a little rough, being of a straw-colour; and the

spaces between them are also rough and porous, but of an olive-colour.

The flat surface, Fig. 9, has a white ridge running longitudinally from

its basis to the apex in the middle; this white ridge or line serves to

cling to the stilus, upon which it sticks. The stilus is also white, and

has the same contexture with the ridge, and is bifid, in order to

support two seeds with their flat sides together, which keeps them the

more compact and less liable to injuries than if a single seed stuck on.

It is certain, a single stilus would do as well to support two seeds as

the bifid one, for even the two stick together as if single, if there

was not a necessity for a double stilus, for a very important reason;

which is, that when the seeds are ripe, they would stick on a single

one, till the time of their being scattered about would pass, which

would be a detriment to their propagation; but the stilus being double,

and of a springy nature, the two parts are glued together, as long as

moisture remains about the seeds capable of keeping them together; but

when the seeds are grown ripe and dry, then this moisture is exhaled,

and the stilus, as well as the flat surfaces of the seeds, begin to

contract from their former plumpness; the stilus first begins to split

asunder, and thereby separates the two surfaces of the seeds, each of

which sticks loosely to its particular limb of the stilus; till at

length the remaining moisture exhaling more and more, it grows rigid,

and cracks with a blast of wind, and so the seed is scattered or sown in

the ground in its due time. This is a most excellent provision of

nature, and highly worth regard.

When the two seeds are sticking together, they have a round end which is

the basis, and grow smaller by degrees upward, till they become an apex,

having upon each seed a kind of fungous or bulbous corona, which is the

umbilicus of the seed; and the shape of the two together may be

compared to that of a given fig reversed. The parenchyma of these seeds

is that of a pale greenish olive-colour. They are more exactly of a size

than most other seeds, and are each one-eighth part of an inch long, and

more than half that breadth.

FŒNICULUM DULCE. Fig. 10 and 11. Anethum F. Linn. Sweet Fennel. In

viewing these seeds, they do not look much unlike one species of the

cucumber in general, some of them being thicker and longer than others,

and some straighter; but upon applying the microscope, the ridges appear

high, and form deep furrows.

Two of these seeds grow together upon the same little stalk, which is

divided, like that of the anise seed, into a double or bifid stilus, in

the same manner, and for the same reasons; when the two are pulled

asunder, they appear to have a flat surface, Fig. 10, and a round and

ridged one, Fig. 11. On the former, these characters are conspicuous:

viz. 1. The whitish cortex or covering of the seed shews its edge

distinctly. 2. Withinside this edge a white fungous substance appears

running parallel to, and in close contact with it, on each side from end

to end, being both together about one-third of the breadth of the seed;

and between these, in the center, there appears a dark brown elliptical

substance, which, upon separating the cortical and fungous coverings,

appears to be a nucleus, whose internal substance is of an olive colour

and something succulent. On the external surface there appears three

high ridges, and when the flat faces of the seeds are close together

upon the stilus, so as to seem but one, these three ridges on each seed

and the two edges of each meeting firmly together, form eight regular

ridges equally divided upon that round body that we have before said to

resemble a cucumber. The extremity which is fixed to the stem is

smaller than the other; the latter has a fungous kind of process

arising from the body of the seed, which is the umbilicus of the seed.

The ridges are of a light straw-colour, and the bottoms of the sulci

they form are darkish. A middling seed is somewhat more than two-eighths

of an inch long, and above half that breadth.

GRANA PARADISI. Fig. 12 and 13. Amomum G. P. Linn. Grains of Paradise.

These seeds are of an irregular form, but may be said to have a basis

and apex; the basis is generally so flat as to render it capable of

standing well upon it; the sides consist of several flats and angles,

and the apex looks very much like the mouth of a purse drawn or gathered

up close together.

The body of the seed is of a reddish brown colour, the surface much

granulated and rough; and the apex, which is its umbilicus, degenerates

from this reddish brown colour into a yellow, appearing in little oblong

ridges or plates.

Upon making a transverse section of this seed, a most beautiful

appearance presents itself; the external cortex is very thin, and

retains the same colour through its substance with the outer surface;

this incloses a black, porous, pitchy substance, which is much thicker

than the cortex, in close contact with it, and at the angles of the seed

is pretty considerable. Next to this the parenchyma appears, as white as

the finest white salt, and radiated from the center outward; and in this

transverse section seems to have a round hole in the center of one of

the divided parts, and a process answerable to it in the other. If a

longitudinal incision be made through the middle, the appearance will be

as in Fig. 13, when the center of the white parenchyma appears exactly

like a modern vinegar glass, commonly called a cruet, the bottom of

which tends obliquely towards the basis, and the top towards the apex of

the seed. The surface of this part looks polished, and the colour is a

yellowish olive; nor does it look unlike a gummy or resinous body;

however, we cannot be certain what its substance is, notwithstanding its

great resemblance to that kind of matter. The white parenchyma is very

singular, being almost divided into two lobes by this little cruet,

whose top runs up into or is lost in a remarkable circular part, which

has a rising towards the umbilicus of the seed in form of an acorn, and

this rising stands in the open place, into which the pursy umbilicus

leads. As to its natural dimensions, an ordinary seed is somewhat more

than the eighth of an inch long, and about an eighth thick.

PETROSELINUM. Fig. 14. Apium P. Linn. Common Parsley. The seeds of this

garden parsley, being of the umbellated kind, grow two upon a little

stem, whose bifid stilus supports them like the ammi or smallage; they

are striated or ribbed like those, having three of such ribs on the

convex part, spread further asunder, and being much more conspicuous

than those of either of the seeds just mentioned. There is another rib

which runs on each side of the seed, which is its lateral rib, and that

which runs round the edge of the flat surface makes it resemble the edge

or gunnel of a barge or lighter, to which each of these bears some

resemblance. This seed is considerably larger than either, and much

longer in proportion to their size; the colour of the interstices

between the ribs is a dusky olive, and the ribs of an oaker yellow. They

are pretty round where they rest on the stem, and run up elliptically to

an apex, where there is a fungous corona, which is the umbilicus. In

making a transverse section through the middle of one of them, the

parenchyma appears of the same form with the cortex, having this

remarkable property, that between the ridges or ribs are canals, formed

of the cortex and the surface of the parenchyma, containing a brown

balsamic fluid, with which they are filled from one end to the other of

the seed; and in some seeds this balsam appears all round between the

parenchyma and the cortex. This will be further explained when we come

to speak of the seseli, in which this is so apparent, that a transverse

view of that seed will serve for both. The parenchyma is somewhat

succulent, and of a greyish olive colour. An ordinary seed is one-eighth

of an inch long, and about a sixteenth thick.

Essays on the Microscope Containing a Practical Description of the Most Improved Microscopes, a General History of Insects, etc., etc. · 第 47 / 56 段