The Republican. [volume] (Oakland, Md.) 1877-current, 1889-04-20
SCIENCE AND INDUSTRY,

1t Is proposed to attempt the dissi-
patton of fog by electrical discarges.
The largest quill toothpick mill in
the world is within few miles of Paris.
There about 6oO,OOO barrels of cot
ton seed oil manufactured annually,
two-thirds Of which is consumed in
manufacturing lard. ....
About 2300 B. c.. when Emperor
Yam gave the order for the observation
of the meridian stars. is thought to be
the beginning of Chinese astronomy.
DR. Kruss, celebrated chemist of
Munich, has successfully decomposed
cobalt and nickel-two substances
which have hitherto been considered
as elementary. s t ~
One of Names interesting indus
tries is at Orneville, where one concern
makes twenty different kinds OF log and
board rules and four different caliper
rules. The factory sends its rules all
over the world.
"A thermographic printing press,
capable of turning off four hundred i'm
PlCoolOho tlH lOul lIOul DOb bypc Ou
wood, is a new French production. 1t
is said to yield results equal to litho-
graphy.
About nine-tenths of all the clay
pipes manufactured in the United
States are made in Brooklyn, N. Y,
where three factories are located that
turn out $1,000 gross annually. The
clay comes from Woodbridge, n. j.,
AND costs at the factory five dollars per
tot. .,.
Two German eXperimenters have
discovered that there is heat-center
located in the brain. 1t is found at the
front and upper part of the brain.
When the heat-center is irritated in
rabbit, the temperature sometimes rises
several degrees, and with wonderful
quickness.
A process, called the Cooper pro-
cess, of lining iron pipes with glass,
is reported, which is said to have stood
the severe test of having water passed
through them at the boiling point and
Immediately followed by water at a
temperature of thirty-three degrees,
and without in any way cracking or
damaging Ale glass. If the invention
should prove equal to such changes OF
temperature in ordinary service with.
out injury, it will be found exceedingly
valuable.
Investigation of fire ruins show that
porous terra Gotta bricks and blocks
best resist fire, water and frost, next to
these in the order of fire-resisting quail
tiles being the various concretes, or
some of them, and burned clay work.
In the best building work now done,
the iron part is encased in porous terra
Gotta, tile or brick work, in roof, floor
and tile construction; the hollow tiles
are faced with vitreous tile, slate or
any good weather-proof coating, or
with single thickness of brick. En-
cased in fire-proof materials, iron and
steel framework is claimed to give the
best results.
In the Galician forests. electric
power has been adopted tor telling
trees. In steam machinery for telling
trees the trunk is sawed, but in this case
it is drilled. When the wood is of a
soft nature, the drill has a sweeping
motion, and cuts into the trunk by
means of cutting edges on its sides.
The drill is actuated by an electric
motor mounted on carriage, which is
brought up close to the tree and
shackled to it. The electrical current
is conveyed to the motor by insulated
leads, brought through the forests from
generator placed in some convenient
site.
The manufacture of what are
termed veneered diamonds is nota-
BILE industry in Paris. The body of the
gem is of quartz or crystal. After be-
ing cut into a proper shape it is put
into galvanic battery which coats it
with liquid. the latter being made of
diamonds which are too small to be
cut, and of the clippings taken from
diamonds during the process Of shap-
ing them. In this way all the small
particles of diamonds that heretofore
have been regarded as comparatively
worthless can, by means of this in
genious process, be made of service to
the iewa1nr