The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1889-04-13
SCIENCE AND INDUSTRY.

--Oleomargarine is now extensively
taking the place of other grease in the
preparation of cartridges.
"A liquid preparation has been dis,
covered which, being applied to the
carbons, increases the intensity of
2,0O0-candle power arc light to a three
fold degree
DR.. Tanner, the faster, maintains
that the growing use of opium and its
compounds frequently produce SYM
cope nowadays, which leads to inter-
ment before actual death.
The carpet manufacturers of Phila-
delphia have 1850 looms in use, en-
ploying II, 800 hands, and manufacture
annually 100000 yards of carpet at a
value of $44, 96O,O 900.
M. Fouque, French metallurgist,
claims to have re-discovered the art Of
making the famous Pompeii blue. His
process is based on mixture of sili-
cate, copper and chalk, and he says
that he can produce any quantity of it
at a moderate cost
The 1920 miles of new railroads
built in 1888, called about $4,000 new
men into the service, reckoning five
employees to the mile, including officers
and men in all capacities. The present
railway system OF the United States
has an army of 7S5, 900 men.
Recent delicate scientific expert
ments, says writer on earthquakes,
have discovered the fact that the SUR
f. Il Al. IL, N,1, .
rest for more than thirty hours at a
time. Thus those great earthquakes
which make epochs in history are
merely extreme manifestations of
forces that rarely sleep.
Oxygen was discovered almost
simultaneously. in the year 1874, by
Joseph Priestly and Charles Scheele,
the former-an Englishman by birth
having the precedence by few weeks.
He removed to America in 1894. where
his fame as a physicist and chemist
was quickly recognized. His descend
ants and admirers in this country
celebrated the centennial of the dis
covery with appropriate ceremonies.
The latest use of photography is to
make cannon ball take picture of
it's own wabblings. An arrangement
something like camera is placed in the
forward end of the projectile, and when
it is fired directly at the sun the light
traces lines upon the sensitive plate,
from the direction of which it can be
told whether the projectile has kept in
one position or has wavered to and fro
during its flight. The scheme is largely
theoretical as yet
How sponges bore into solid lime
stone or shells is as yet an unsolved
problem. NJ. Nassonoif has investi-
gated new species of CIione which
tunnels oyster and mussel shells, and he
believes thTt the boring of the canals
and galleries is performed solely by the
soft parts of the sponge. The pene-
tration of the prolongation of the body
of the sponge into the shell appears to
be accomplished by the secretion of a
corroding liquid, probably an acid.
The Italian admiralty have re-
Gently caused to be carried out num-
Der of experiments with view to test
oil and olive oil for lubricating pur-
poses on board ship. From the results
obtained they have given orders that
henceforth all exposed parts Of machin-
cry are to be fabricated exclusively
with castor oil, while mineral oils are
to be used for cylinder and similar lu-
brication.
"A process has been discovered in
for drying milk so as to con-
vert it from fluid to solid. 1t is
said that 1.-The milk, when in solidi-
fed state, is delicious, easily digesti-
BILE and cheap food, occupies mini
mum of space. is not in the least degree
liable TO deterioration. and will there
fore be found of advantage for use on
board ships OF war, emigrant and other
ships, and for other purposes. The
dry milk is readily digestible, nour-
ishing food for children, and even for
babies"