The Opelousas courier., 1891-04-18
SCIENTIFIC AND INDUSTRIAL.
yeneers are cut by electricity.

N6l6eFS dEE CUT Uy OiCSeAA11oJ'
Berlin, Germany, has refused to grant
any franchises for electric street rail.
ways.
Asbestos is supposed to have a great
future as a lubricator for machine bear.
ings.
The telephone between London, Eng.
land, aud Paris, France, is to be opened
on March 1; charge for three minutes con
versation, 81.
A lineman who received an electric
shock in Louisville, KY, has become in
sane and believes that he is constantly
pursued by an electric ghost.
It has been recently ascertained that
the resistance of bricks to crushing force
varies from 5000 to $4,000 pounds per
square inch, according to quality.
Diapers and others showing window
goods liable to lose color by fading are
advised to put yellow-colored glass in
their windows, as the bleaching is caused
by the white rays of the suns light.
Yaehtsmen who do not like the black
tar In their deck seams can now get it
white, a white pitch having been in
vented that can be run into the hot
and which will then stand the sums heat
in any climate.
An English engineer has designed, and
is now manufacturing, a portable cross
cut saw; that is, a large two-man saw,
that can be folded up into small COM
pass. Tt is really a flexible chain of saw
teeth riveted together.
Experiment has proved that, If a deli.
cate piece of lace be placed between an
iron plate and disk of gunpowder, and
the latter be detonated, the lace will be
annihilated, but its impression will be
clearly stamped on the iron.
Photography is being used in the Paris
France morgue to determine, If posi-
BILE, Identification of the deceased. A
photograph on a large scale is taken of
the hands and put on exhibition. Per-
gom, are frequently identified either by
scars of injuries OIL marks of various
kinds which indicate the probable occu-
patton.
A meteoric stone, resembling granite,
recently fell near the mouth of Pistol
River, in Curry County. Oregon. II
weighs something over 400 pounds and
imbedded itself several feet in the earth.
Parties who saw it went to dig it out,
but found it SO hot nothing could be done
with it. After it had cooled it was re.
moved, and viii soon be placed on exhi.
bition.
Some nickle-steel plates recently tested
at the Carnegie Works, in Pennsylvania,
the specimens being cut from q three
fourths inch plate, gave excellent re-
suits. The elastic limit is said to have
been SO, 900 to sc, 900 pounds, and the
ultimate strength 100, 900 and 102, 600
pounds. The reduction of area was
twenty-nine and one-half per cent, and
twenty-six and one-half per cent. re-
spectively.
One Of the highest aims of an expert
fireman should be to keep the largest
possible portion of his CRATE area in a
condition to give radiant heat the largest
possible part of the day. This may be
done as follows: When using anthracite
coal, by firing light, quick and often, not
covering all of the incandescent Goals;
when using b1tumlnous coal, by coking
it very near the dead plate, allowing
some air to go through openings In the
door, and by pushing toward the bridge
wall only live Goals; when slicing, to
open the door only far enough to work
the bar.