The Colfax chronicle., 1890-06-07
SCIENCE AND INDUSTRY.


Soft oolitio stone is now made into
hard marble by treating 1t with
chemical solution.
"A French physician has been sue.
cessful with q much larger percentage
of vaccination ON. the leg than on the
arm.
The aim, as far as smokeless pow.
ders are concerned. where high ex-
plosives are used, is by chemical and
mechanical means to render detonation
impossible and to convert violent ex-
plosive into trustworthy and controi-
liable propellant.
Professor Mansfield, speaking of
electric cars, says that In case OF
thunderstorm you are safer in an cleo
trio car than in horse car, as the ma
chinery is so constructed that the cleo
tricity can be run to the earth in the
twinkling of an eye.
Warts have their bacillus. 1t has
just been found in the prickle layer by
DIR. Kuhnemann, and it is in the form
of exceedingly delicate, slender rods,
most plentiful when the wart Is recent.
and seldom entering the surrounding
skin.
1t is said that the coming car for
electrical surface roads will have motors
differentially connected. 1t will not
only excel in ease OF riding and COM
fort, but will double the present life OF
wheels, with great economy in track,
truck and motor repairs, as well as in
power, lubricants, ETC.; this, and more,
at schedule speeds Of ten to twenty
miles per hour, and without sacrifice OF
safety.
Hydrogen gas has been liquefed,
but it requires pressure of 10000
pounds to the square inch. and tenn
perature of twenty-five degrees below
zero. It forms blue liquid, which by
the cold produced by its own evapora-
ton, may be frozen for an instant to q
solid with metallic lustre, thus con-
frming the theory that hydrogen is .
gaseous metal, just as mercury is .
liquid one.
An interesting astronomical dis
covery is announced from Italy. After
ten years of investigation, Schiaparelh
has found that Mercury, the planet
nearest to the sun, has = rotation like
that of the moon. The planet turns
once on its axis during the period of its
revolution round the sun, so that the
same side is always turned toward the
sun.
The total quantity of Bessemer
1889 by works producing their own in
gots was LAOS. 066 gross tons, gain of
1o2, 145 gross tons over the production in
1888 The production of Bessemer steel
ingots was about 400, 600 gross tons larger
than in 1888, thus indicating how rap
idly the demand continues to increase
for steel for miscellaneous products
which were formerly made Of iron.- =
Railway Age.
IN. Jean Luvini supposes that the
electrical manifestations of the atmos-
phere are produced by the friction of
PARTICLES of water and ice, and such
other substances as may be lifted to the
upper regions and dispersed through
several miles of thickness. The differ
ences in the character of the manifesto
tions are dependent upon differences in
intensity. Auroral lights are due to
discharges in rarefied air.
"A correspondent Of the Pharmaceut-
ische Zeitung, speaking from his own
experience, says that tannin can not be
too highly recommended as an applica-
ton to burns, especially when very ex-
tensive. the skin being entirely removed.
A Ave per cent solution is squeezed
from n q ev,onoo ovor tho donudod cur.