Weekly expositor. (Brockway Centre, Mich.) 1882-1894, 1891-12-04
APPLIED SCIENCES.

Electricity Is now used in heating fat
Irons in tailor shops.
The use Of gas for illuminating libraries
Is found TO destroy the leather bindings OF
books
The skin Of boiled egg when carefully
peeled and applied when wet to.a boil will
draw out the matter and greatly relieve
the soreness
Germany stands at the front In electric
al science, although the United States 10
far ahead OF any other country Ia the
practical use OF electricity.
A French scientist has perfected device
for obtaining oxygen from sea water by
electric means, ard carrying 1t to any
part OF vessel to use as disinfectant.
A mixture Of powdered aluminium and
chloride of potash win give a brilliant
fash light. 1t gives no smoke, and Is thus
far better than magnesium for photo
graphic purposes
Recent experiments upon the electro
lytic generation of pressure from gases
formed in a closed space have been very
successful and a pressure of 1900 atmos-
pheres has been obtained.
Recent experience in cold storage shows
that different articles of food require diff
ferent degrees OF temperature for the
preservation, varying from SS degrees
Fahrenheit for eggs to from 10 to 20 de-
grees for poultry and various kinds of
game.
Quite an achievement is thought to have
been accomplished lately in the manufact-
ure Of spikes, the aim being to make q fin
ished article by rolling the bar In such n
manner that its width shall be the length
of the spike, and in such shape that the
spikes may be cut from 1t with shears, ns
a nail is made, except that the head is
made in the rolling process.
Recent results at the Texas experiment
station concerning the value Of cottonseed
meal in the dairy ration show that when
the cream is extracted by the centrifugal
method a much larger amount of the but
ter fat is extracted, and in the CRAFTY
method the character Of food plays very
important part on the amount of butter
that can be obtained from the milk.
French glass manufacturers have found
out n new method of utilizing waste glass.
Any fragments of the broken material Of
various colors are mixed together, after
having been reduced to a suitable sizeand
then placed in molds lined with silica,
tulC, vi bOuuo ObueI IcolSlihS rfhN
fred-a coherent mass being thus pro-
duced, capable Of being dressed and cut
into blocks, which are, of course, irregu-
larly colored, and these blocks may be
used as artificial marble.
One Of the latest inventions TO attract
the approval OF railroad men is the cushion
car wheel, which Is said to possess many
advantages in the way ole simplicity,
safety and economy, while at the same
time it is almost noiseless, This wheel Is
composed Of two parts the confer and tho
tire, while between the two is a thick rub
Der band which acts as a cushionto absorb
ell the vibrations. BY peculiar con-
struction the tire Is made SO that-it may
be removed without taking the wheel from
the axle.
Brick-making has developed from n
common mechanical occupation into an
art--forms have been altered from tho
stiff by formula to suit artistic situa-
tions in fronts, pilasters and coTnices,Aand
finally the browning development Is
reached In the rapid aud cheap production
of the most elegant art forms and express
sions in terra Gotta, until now clay-work-
ers produce the best material for the most
pretentious OF elaborate structures, while
retaining, and in fact, increasing the we'll
known fire resisting qualities. -