The Cheyenne daily leader. [volume] (Cheyenne, Wyo.) 1870-1884, 1876-04-01
SCIENCE ~JoTTINGs.


Lose less Of their elective force, when placed
Ihreszt than when they are planod in
single Gle.
Dry heated all, productive o. throat and
lung diseases, may be moistened BY hang
ing a wet towel in front of the furnace. the
lower edge of the towel being allowed to
dip IN a shallow vessel Of water.
A comparative trial of the relative ad-
vsntages Of dynamite. gun-cotton. and gun
powder was recently made at the railway
tunnel works under Clifton Down. with the
result Of showing that dynamite is much
superior to either gun-ootton or gunpowdcr.
A recipe for a new kind of cement for
plugging hollow teethis published by Oster-
mierI it is as follows; Seven parts burnt
lime and l6 parts glacial phosphorie acid
are mixed together and pressed into the
cavity. which has previously been carefully
dried.
A simple means of testing the quality Of
leather consists, according to NJ. Bitner, in
watching its behavior when treated with
ALPHABETICALLY aeetic acid. Leather not
completely saturated with the tannin will
swell up; but if he tannin has penetrated
the leather VIII not swell.
The Chemical Rerie,u states that in a drop
of water obtained from a single snowflake,
M ~magni6ed five hundred times, were
found pieces of coal. fragments of cloth.
grains of starch, sandy matter. and an i'm
mense variety of other substances. not a
fragment of which excecdedin diameter the
three-thorsandth part of an inch.
Professor Cornu, of Paris, lately described
before the Physical Society of London his
most recent experiments ON the velocity Of
light. They were made last summer with
revolving mirrors stationed fourteen and a
half miles apart. The sos experiments
which were made showed the velocity of
light to be 1860 miles per second.
Electric science occupies a place of no
mean importance in the new Opera House
in Paris. A special room is set apart as a
battery-room, in which $50 Bunsen's cells,
arranged in sets of sixty on tables of rough
plate-glass, are manipulated to pass n cur
rent to any part of the stage. so as to direct
the electric light upon any point of the
scenery
Two lakes, containing large quantities Of
carbonate of soda. have been discovered in
Wyoming Territory, U. S. A. The larger is
200 acres and the smaller three and a half
acres in extent. The latter is dry during a
large portion of the year, and it is estimated
that the dry deposit, which is of the depth OF
six feet, contains 10000 tons. The larger
one is always filed with water, the specific
gravity of the solution being 1907, which
would give about 5000 tons of carbonate
Of soda, If evaporated.
The influence of the moon on meteoro.
logical phenomena has been investigated by
MarchAnd, who has taken as a basis the
years 1883 to 1872, and has also studied the
distribution Of storms from the year 1856 to
1879. In respect Of this latter subject he
finds TINT on the 10th, 14th. and 18th days
of the lunar month storms are particularly
prevalent; and on the 9Th. Goth, and oath
days they are less prevalent. In general.
the evidence points to the conclusion that
no lunar influence is plainly perceptible.
Professor Schrotter of Vienna has re.
Gently examined the high-priced cosmetic
introduced by Thiellay of London for chang
ing the color of black hair to a golden yellow.
He recognised in it simply a dilute peroxide
of hydrogen, prepared with well water. and
which owes its permanence to the great de.
gree of dilution and the presence of a small
quantity of free acid. A fluid used for
similar purposes seven years ago, at the
time when Madame Rachel's trial attracted
SO much attention, and analysed at the time
in London. was prepared the AM way.
The rubbish which is LEFT in the fields, in
he orchards, gardens, &c, at the close Of
the season, furnishes hiding places for q
vast number of vermin. Eggs, larvp OF
destructive insects, and other pests find a
safe refuge wherein to pass the winter. in
husks, stalks, &C., and upon or beneath
pieces of bark, chips, weeds, loose boards,
and in corners of outbuildings. If the rub
bish were gathered, raked up. and burned,
and buildings whitewashed. myriads of
vermin would be destroyed and prevented
from propagating.
WEIGHTED SILKs.-The practice of giving
weight to cotton fabrics by means of China
clay is tolerably well known. Mr.. J. Pear
son, in DIR. Quesneville's Moniteur Scientjfque.
has a paper "On certain Properties of
Weighted Silks in which he states that an
increase of weight is produced in silks by
treatment with salts of iron and astringents,
and with salts of tin and cyanides; this
Fictitious increase of weight being carried
TO the extent of from 100 to 800 per cent.
1t cannot be too widely known that by this
sdulteration silk is rendered very inham.
mable, burning like finder if touched with
fame, and that under certain circumstances
it becomes spontaneously infammable. Let
us hope that this adulteration is confined to
French silks.
EFFECT OF LIeHr.-Dr. Moore, the meta
physician, thus speaks of the effect of light
on body and mind: ga tadpole confined
in darkness would never become a frog
md an infant deprived of Heavens free
light will only grow intoa shapeless idiot,
instead of o beautiful and reasonable being.
Hence. in the deep. dark gorgesand ravines
of the Swiss Valais, where the direct sun.
shine never reaches, the hideous prevalence
of idiocy startles the traveller. II is a