=The Metric System= (a Letter to the London Times).--SIR: I see that

on Wednesday next, the 22d inst., the President of the Board of Trade

is to receive a deputation from the Decimal Associations and others to

urge on the Government, not merely the adoption of the decimal system

of notation, but the compulsory application within two years of the

metric system of weights and measures in its entirety. I have been

hoping to see a letter in the Times from some person of importance

calling attention to this deputation. I fervently trusted I should

notice one from your correspondent, Mr. Herbert Spencer, who, a year

or so back, contributed a series of thoroughly well-thought-out and

logical articles, exposing the fallacy of the metric system; but if

any such letter has appeared I have, unfortunately, missed it. I

believe this agitation to be largely due to scientific professors who

have been brought up on foreign books, and have found it too much

trouble to convert foreign measurements into English; further, due to

the promptings of a number of foreign merchants, forming (happily, or

unhappily) now so large a portion of our traders-men who, also, do not

wish to take the trouble of converting foreign weights and measures

into English. As regards the suggestion, made time after time, that

the metric system is one giving the greatest simplicity to

calculations, I say unhesitatingly, from very considerable experience,

that it is one absolutely subversive of mental arithmetic, and I

appeal to anybody who has ever had the misfortune to wait at the

_guichet_ of a French railway station while the clerk inside has been

calculating the total amount to be paid for two first-class and one

second-class from "A" to "B" with a piece of chalk, or pencil and

paper, to compare the speed and the certainty of this process with the

answer that he would get at Euston, or at any such station in Great

Britain, and say which system shows by results the advantages in point

of time and in accuracy. The French themselves, as has been pointed

out on more than one occasion, find the metric system too irksome, and

they evade it. According to the metric system, one of its great merits

is that you can state every required quantity by multiples or

submultiples of ten--metre, 1; decimetre, 0.1; centimetre, 0.01;

millimetre, 0.001. But no Frenchman thinks of expressing himself in

this way. Instead of 0.01, he says cm. 1. For a millimetre, he says

mm. 1. When he comes to large weights, does he not commonly abjure the

1,000 kilos and write one tonne? When he comes to domestic weights the

kilogramme is found too large; the half of this, the practical

equivalent of the pound, is wanted. He ought to write 500 grammes. He

does not. He abjures his decimals, and writes one half kilo. But I

feel I must not take up your space by multiplying instances, so well

known to many who have studied the subject, of the unbearable burden

of the decimal _plus_ metrical system compulsorily carried out. I well

know the value of decimals, and the indispensable need of their use in

many circumstances; but I object to being compelled to use them when

they are not needed and are in the way. I find it easier to state

seven eighths, and to deal with it mentally, than to put it into the

form of .875. I do not wish to be restricted by law in the use of my

tools. What would be thought of the law which compelled a shipwright

on all occasions to use a chisel, and never to employ the adze. I,

with, I believe, every upholder of English weights and measures, and

of the use of fractions, am quite willing that the metric system

should be made legal in its entirety throughout Great Britain; but we

are not willing that the useful weights and measures which we can

employ with so great facility and accuracy should be made illegal.

Let the two exist together, and experience will prove which is the one

preferred by the community. I am, sir, your obedient servant,

FREDERICK BRAMWELL.

5 GREAT GEORGE STREET, WESTMINSTER, S. W.,

_March 18, 1899_.

P. S.--Very probably the old stalking-horses will be trotted out on

Wednesday, and the President of the Board of Trade will be told of the

confusion created by the existence of mere local weights and measures.

I believe that if those who cite these anomalies were asked to give

instances at various dates it would be found that these local weights

and measures were dying out. In any event they are illegal, and are

not obligatory upon anybody. Every man can claim to deal according to

the standards of length, of weights, and of capacity. Most certainly

the introduction of the metric system would largely add to the use of

illegal weights and measures, not only locally, but generally. If the

inquiry were made in France, even no farther off than Boulogne, it

would be found that, in the markets there, dealings are frequently

carried out on a local system unconnected with the metric.--F. B.

=Variations in African Religious Ideas.=--Miss Kingsley observes, in

her West African Studies, that when you are traveling from district to

district you can not fail to be struck by the difference in character

of the native religions you are studying, and that no wandering

student of the subject in western Africa can avoid recognizing the

existence of at least four distinct forms of development of the fetich

idea. They have every one of them the same underlying idea, and yet

they differ. "And I believe," Miss Kingsley says, "much of the

confusion which is supposed to exist in African religious ideas is a

confusion only existing in the minds of cabinet ethnologists from a

want of recognition of the fact of the existence of these schools. For

example, suppose you take a few facts from Ellis and a few from

Bastian and mix, and call the mixture West African religion. You do

much the same sort of thing as if you took bits from Mr. Spurgeon's

works and from those of some eminent Jesuit and of a sound Greek

churchman and mixed them, and labeled it European religion. The bits

would be all right by themselves, but the mixture would be a quaint

affair." Of the four main schools of fetich predicated by Miss

Kingsley, the Tshi and Ewe school (Ellis's school) is mainly concerned

with the preservation of life; the Calabar school with attempting to

enable the soul successfully to pass through death; the Mpongwe school

with the attainment of material prosperity; and the school of Nkissi

with the worship of the mystery of the power of evil.

=A Natural History Society as a School.=--Among the agencies employed

by the Boston Society of Natural History for making itself a vehicle

of instruction to the public has been the employment of an educated

man and teacher as guide to the museum, who should also give lectures

there. The salary of this officer has heretofore been provided by the

bounty of Miss Harriet E. Freeman, but she has been obliged to

discontinue her contribution, and the curator is now seeking other

means of maintaining a suitably qualified assistant. The "guide," Mr.

A. W. Grabau, delivered a course of lectures in April and May, 1897,

on "The Surface of the Earth: Its Rocks, Soil, and Scenery," in which

special attention was given to the scenery in New England; and,

whenever it was practicable, excursions were made to localities which

could be used as illustrations. A similar course, delivered in 1896,

resulted in the formation during the summer of the same year of a

class of thirty persons, summer residents of Kennebunkport, Maine, who

were under Mr. Grabau's daily instruction for two weeks. The awakening

of interest in local scenery further led to his giving lectures in

Belmont and Arlington, and he thereby became instrumental in a

movement intended to preserve the local frontal bowlder moraine on

Arlington Heights--a valuable geological movement. A course of

lectures on the Animals of the Shores of New England was given by Mr.

Grabau to a class of from forty to seventy-five persons, in the

Teachers' School of Science, with excursions on Wednesday and Saturday

afternoons. In a similar fall course attention was given specially to

the study of animals in their various habitats. A course by Mr.

Grabau on the use of the microscope and the preparation of specimens

was followed by ten days' laboratory work in Limekilns Bay, Maine. One

of the results of a winter course on zoölogy, to a class of twenty

teachers, was the formation of the Hale House Natural History Club, in

connection with which field meetings are held, classes for children

are formed, and papers upon elementary subjects are read and

discussed. Other courses of lectures are mentioned in the report of

the curator of the society--the field lessons in geology, by Professor

Barton, with a winter course in historical geology; the course of Dr.

R. W. Greenleaf, on the elementary structure and function of the parts

of flowering plants; the course of the curator (Alpheus Hyatt), on

elementary zoölogy; and the lectures on geography, by Prof. W. M.

Davis.

=Glacier Water.=--An analysis of two samples of water from the

Illecilliwaet Glacier, in British Columbia, was recently made by F. T.

Shutt and A. T. Charron. The water was collected a few feet from the

glacier's irregular face, about a mile and a half from the glacier

station on the Canadian Pacific Railway. The following is abstracted

from an account in the Chemical News:

----------------------------------+-----------+-----------

| No. 1. | No. 2.

+-----------+-----------

| Parts per million.

----------------------------------+-----------+-----------

Free ammonia | 0.018 | 0.018

Albuminoid ammonia | 0.027 | 0.037

Nitrogen as nitrates and nitrites | 0.0246 | 0.0442

Oxygen absorbed in fifteen minutes| 0.0396 | 0.0672

Oxygen absorbed in four hours | 0.1056 | 0.1744

Chlorine | 0.10 | 0.10

Total solids at 105° C. | 30.8 | 12.0

Solids after ignition | 30.8 | 8.0

Loss on ignition | None. | 4.0

Phosphates | None. | None.

----------------------------------+-----------+-----------

The authors go on to say: "From the above data we may unhesitatingly

conclude that the glacier water is one of great organic purity. The

samples are not identical, due no doubt to the fact that they were

collected twelve days apart, and probably from different parts of the

foot of the glacier. Both analyses, however, show that, judged by the

standards used in the diagnosis of ordinary potable waters, it is a

water possessing a high degree of purity, and one perfectly wholesome

and eminently suited for drinking and household purposes. As received,

both samples were quite murky, almost milky, in appearance. On

allowing them to stand, perfect subsidence took place, leaving the

supernatant water colorless and brilliant. A microscopic examination

of the sediment showed it to consist of very fine rock matter, chiefly

fragments of quartzite.

=Protection of Plants and Birds in France and Italy.=--Organized

efforts for the protection of native plants and birds from further

destruction are multiplying in Europe. Botanical stations for Alpine

plants have been established at several places in France and

Switzerland, and now Italy has come into line with the association

_Pro Mortibus_, which, founded in July, 1897, has already more than

five hundred adherents. Italy is probably the country where work of

this kind is most needed, for nowhere else is the destruction,

particularly of birds, so systematically, persistently, and

industriously carried on. _Pro Mortibus_ will also interest itself in

the preservation and replantation of the forests. Among other efforts

looking in a similar direction, M. J. Corcelli tells in _La Nature_ of

the establishment of shelters in connection with the schools in Saxony

where birds are fed in the winter, and of lessons given to the

children inculcating regard for them. A great deal has been

accomplished in France without much noise in rewooding the devastated

slopes of the mountains and erecting efficient safeguards against

ravage by torrents--largely by restraining the torrents at their

sources; and the Alpine forests of the country, M. Corcelli says, "are

again rising from their ashes." Reserves of Alpine plants have been

established by the Belfort section of the French Alpine Club on the

_Ballon_ of Alsace; the central section is creating an extensive

botanical garden in the Vosges, to serve as a place of refuge and

propagation and multiplication of species threatened with extinction.

The city of Annecy, in Savoy, has recently voted the money required

for establishing a similar garden on the verdant ridges of the Semnoz.

Two local societies in Italy are engaged in a similar work, one of

which has established the garden museum Chamousia on the slopes of the

Saint Bernard, where plants from the Pyrenees and the Himalaya are

also collected. Switzerland is not behind either of these countries in

this work.

=Tortoise Shell.=--The following interesting account of the

tortoise-shell industry is taken from Nature: The tortoise shell of

commerce is obtained from the horny superficial plates overlying the

bony case of the great majority of tortoises and turtles. Turtles

differ from tortoises in the heart-shaped form of the upper half of

the shell, and the conversion of the limbs into paddles adapted for

swimming. The upper part of the shell carries a median row of five

large superficial horny plates, flanked on either side by a row of

four or five still larger flat plates; these thirteen or fifteen large

plates affording some of the most valuable commercial tortoise shell

in the particular species whose shell is in most demand. On the front

and hind edges of the upper bony shell and the portion connecting the

latter with the plastron, or lower shell, are a series of smaller

horny plates, generally twenty-four in number, which are sharply bent

in the middle and are known in the trade as "hoof." The under surface

of the shell of a turtle carries six pairs of large, more or less

flat, horny plates, for which the trade term, derived from their

uniform color, is "yellow belly." In value they sometimes exceed all

but the very finest of the large upper plates, generally known simply

as "shell." Of the host of land and fresh-water tortoises, most of

which are of comparatively small size, the horny plates (which, by the

way, are altogether wanting in the so-called soft tortoises of

tropical rivers), on account of their thinness and opacity, are now of

no commercial value, at least in England. Moreover, it is by no means

all species of marine turtles which yield commercial tortoise shell.

Of these marine turtles, exclusive of the great leathery turtle, there

are three well-marked and perfectly distinct types, severally

represented by the green or edible turtle, the hawksbill, and the

loggerhead. The hawksbill furnishes the most valuable shell. The

largest and best plates, which are in the middle of the back, are

about a quarter of an inch thick in the center, and measure about

thirteen by eight inches, their weight being from about half a pound

each to as much as one pound. The length of the carapace (the upper

shell) in the hawksbill is about forty-two inches. It is found in all

tropical and subtropical seas. From a dead turtle the plates of

tortoise shell can be readily detached by beating. The highest price

realized during 1898 in the London market was about 112_s._ 6_d._

(about $28) a pound for the very best selected shell. It is stated

that 76,760 pounds of hawksbill shell were sold in London in 1898. The

shell is very readily workable, being made partially plastic by

immersion in hot water.

=Poison in Wild Cherry Leaves.=--Instances having been brought to the

notice of the directory of the New Hampshire College Agricultural

Experiment Station of cattle presumably fatally poisoned by prussic

acid from eating wild cherry leaves, the subject has been investigated

by Fred W. Morse and Charles D. Howard. Five species of wild cherry

grow in New Hampshire, of which the red cherry and the horse plum are

not regarded as dangerous, and the dwarf cherry has not been examined,

but is strongly suspected. The wild black cherry is the most noxious

species, and the chokecherry is not far behind it. The poisonous

principle in these cherries is hydrocyanic or prussic acid, which,

however, does not exist in the leaves as such, but is derived from the

amygdalin they contain. The popular opinion that only the wilted

leaves are specially dangerous is not borne out. The authors found

both wilted and fresh leaves poisonous, and the dried leaves worthy to

be regarded with suspicion. Vigorous, succulent leaves from young

shoots, which are the ones most likely to be eaten by cattle, are far

more poisonous than the leaves from a mature tree or stunted shrub.

The largest amounts of prussic acid were derived from leaves wilted in

bright sunlight to about seventy-five per cent their original weight,

or till they began to appear slightly limp and lose their gloss.

Leaves wilted in the dark were much less dangerous.

=Dr. Brinton's Contributions to American Linguistics.=--At the

suggestion of the late James Constantine Pilling, Dr. D. G. Brinton

has prepared an analytical survey of his contributions in the field of

American linguistics, which have now extended over forty years. The

list includes seventy-one titles of books and papers, of which sixteen

are classed as general articles and works. The first four of these are

occupied with the inquiry whether the native American languages, as a

group, have peculiar morphological traits that justify their

classification as one of the great divisions of human speech. Dr.

Brinton finds a feature--incorporation--which, under the form

polysynthesis, is present in a marked degree in nearly all of them.

Another paper shows that the various alleged affiliations between

American and Asiatic tongues are wholly unfounded, and another pleads

for more attention to American languages. A volume of nearly four

hundred pages--The American Race--was the first attempt at a

systematic classification of all the tribes of North, Central, and

South America on the basis of language. It defines seventy-nine

linguistic stocks in North America and sixty-one in South America,

pertaining to nearly sixteen hundred tribes. Other volumes in the list

include writings, preferably on secular subjects, by natives in their

own languages. One contains a list of native American authors, and

notices some of their works. Another vindicates the claim of native

American poetry to recognition. These works were followed by the

Library of Aboriginal American Literature, of which eight considerable

volumes were published, each containing a work wholly of native

inspiration, in a native tongue, with a translation, notes, etc.

Fourteen other publications relate to North American languages north

of Mexico, thirty-two to Mexican and Central American languages, and

ten to South American and Antillean languages. Many of these articles

were collected in 1890 and published in a volume entitled Essays of an

Americanist. It was arranged in four parts, relating respectively to

Ethnology and Archæology, Mythology and Folklore, Graphic Systems and

Literature, and Linguistics. The value of Dr. Brinton's labors will be

realized by all persons who know how rapidly things purely native

American are passing away.

=Metallic Alloys of Rich Colors.=--A remarkable alloy of gold

seventy-eight parts and aluminum twenty-two parts, discovered by

Messrs. Roberts-Austen and Hunt, has a characteristic purple color

which can not be imitated; for if the designated proportions of the

constituents are varied from, the base is entirely changed. The

compound lacks somewhat in the qualities of resistance and

malleability. The color is abnormal in that it partakes of none of the

color features of its constituents, as is the case in most

combinations of metals. Thus, the colors of copper alloyed with zinc

or tin pass gradually from red to white, according to the proportions

of the constituent metals. In the union of two metals of white or

bluish-white color, like zinc, tin, silver, and aluminum, the color of

the alloys is not perceptibly different from that of the

components--that is, it continues white. The purple of the gold

aluminum alloy is not, however, the only exception to this rule.

Aluminum gives highly colored compounds with several other metals,

even when the second metal is clearly white. In the experiments of

Charles Marcot, of Geneva, in alloying aluminum with platinum,

palladium, nickel, and cobalt, combination took place abruptly at red

heat, with the development of an intense temperature and a partial

combination of the aluminum; and when platinum is the second metal, an

explosion is liable to occur. An alloy of seventy-two parts of

platinum and twenty-eight of aluminum had a bright golden or yellow

color, which varied under slight changes in the proportions of the

elements to violet green or coppery red. The alloy is hard and brittle

and of crystalline structure. The yellow form is stable, while the

other forms decompose in a short time. An alloy of seventy-two parts

palladium and twenty-eight aluminum is of fine coppery rose color,

crystalline texture, hard and brittle, and suffers no change with

time. An alloy of from seventy-five to eighty parts cobalt and twenty

to twenty-five aluminum is straw-yellow, inclining to brown; when just

formed it is externally hard and scratches glass, but is easily broken

with a hammer, and falls to a powder in a few days. An alloy of

eighty-two parts nickel and eighteen aluminum has a pronounced

straw-yellow color, is as hard as tempered steel, and resists the blow

of a hammer. The fracture, close-grained, is that of steel or bell

metal. It is susceptible of a fine polish, is stable, and keeps its

color. Though interesting on account of their colors, these alloys,

except that of nickel, are not suitable for any use.

=The Chemistry of Sausages.=--The _Lancet_ is authority for the

following: "The composition of the sausage is not only complex, but it

is often obscure. It is supposed to be a compound of minced beef and

pork. Abroad, however, the sausage is compounded of a much wider range

of substances. These include brains, liver, and horseflesh.

Occasionally they do not contain meat at all, but only bread tinged

with red oxide of iron and mixed with a varying proportion of fat.

Horseflesh is rich in glycogen, and this fact enables its presence in

sausage meat to be detected with some amount of certainty. The test,

which depends on a color reaction, with iodine has recently been more

carefully studied and with more satisfactory results, so that the

presence of five per cent of horseflesh can be detected. At present

there is no legal provision for a standard in regard to the

composition of sausages, but clearly there ought to be. Limitations

should be laid down as to the amount of bread used, as to the actual

proportion of meat substances present, and as to the coloring matters

added to give an attractive appearance of fresh meat. Sausages are

extremely liable to undergo decomposition and become poisonous, owing

to the elaboration of toxic substances during the putrefactive

process. Bad or rancid fat is very liable to alter the character of a

sausage for the worse. Thus in some instances the use of rancid lard

has rendered the sausage after a time quite phosphorescent, an

appearance which indicates, of course, an undesirable change. The

smoked sausage is a much safer article of diet than the unsmoked,

since the curing process preserves the meat substance against

decomposition by reason of the empyreumatic bodies present in the wood

smoke which is used for this purpose."

Appletons' Popular Science Monthly, June 1899 Volume LV · 第 15 / 16 段