Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1889-06-14
POPULAR SCIENCE.

IL ID oul-iststCu NdNt NONCiCo
electric cables in peat, in which lead is
said TO be impcrishablc.
American tin ores yield two to four per
cent. OF metal against one aud u half for
those Of Wales and Cornwall.
The structure of the appraised coral
Islands 50 far us yet examined appears to
lend no support to the Darwinian theory
of formation.
II solid powder be suspended in II
liquid into which electrified solids arc in
troduccd, it tends to accumulate around
one of the poles
The artcsian- well basin of Dakota sup
plies abundant water under u pressure of
40 pounds TO the square inch from Il
well 1165 feet deep.
1t is claimed that in long lines of
electric railways over which there is a
heavy traffic the series system is more adj
vantageous than the parallel.
The electricians to the Paris Exhibition
have devised method by which the
electric light will be thrown upon waters
from fountains from some hidden source
with very elaborate and artistic coloring
effects.
The chemical journals announce as
newly discovered solvents OF Prussian
blue, molybdic acid, which dissolves it III
large quantity, and molybdatc and tung-
state of ammonia, which also dissolve il
very readily.
The best authorities admit that beef
and mutton cannot be properly inspected
,ff l,oi,,..
of the animal killed should always be in
spected in order 10 decide whether the
meat be healthy.
The bulk of the water of the ocean has
very low temperature; it is ice cold at
the bottom even under the equator, but
on the surface in the tropics there is ii
relatively thin film of warm water
with temperature Of from seventy de-
grccs to cighty-four degrees Fahrenheit.
The electric postal railway to be tried
between Laurel and Baltimore, Maryland,
will have three rails-an overhead one
for the current and two lower ones for
the cars, which will he two feet square
and twcntyone feet long. They are to
be built of sheet iron with brakes
regulated solely by electricity, will carry
nothing but mails, and are expected to
reach speed of 100 miles per hour.
A new cement has been used to rem.
ovate many stone buildings of Paris, and
is likely to prove useful for various
purposes. A powder is made of two
parts of oxida Of zinc, two of crushed
hard limestone and one of pulverized
grit, with Il certain proportion of ochrc
as n coloring agent. A liquid to use with
the powder consists Of six parts of zinc
dissolved in commercial muriatic acid
with one part of sal ammoniac, the whole
diluted with two-thirds of its volume OF
water. A pound of powder to two and
half pints of liquid gives very strong
cement.
l.. G. Wilson, resident Of Jerauld
County, Dakota, has made discovery
which, if successful, will be of vast I'M
portance to the farmers. lie has found
that the wildsill cocoons are strong ant
substantial, and that they can be carted
These cocoons are so numerous that they
have to be taken Off the trees and de
stroyed, and while Mr. Wilson was n,
this work last spring he stopped to en-
anime one, and found it to he made OF
strong material lie ut once wrote to
several silk-worlers and sent samples to
one in France, who Immediately sent an
order for fifty pounds From this amount
the silk -workcr will test The value of the
cocoons and report.