Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1892-09-02
POPULAR SCIENCE.

A steel rail lasts. with average wear,
about eighteen years. .o
A cremated body leaves residuum pr
only eight ounces on an average.
German scientists are now making an
explosive equal to dynamite out of COM
mon jute.
A London firm finds windmill the
most economical means of securing the
motive rover necessary to run dynamo
Fatigue caused by brainwork, says an
italian scientist, acts as poison, winch
affects all the organs, especially the mus
;ular system.
Recent experiments in France on the
velocity OF propagation OF electric waves
give mean velocity which is almost
exactly that of light.
Hard water contains too much lime
stone, and that causes bread baked wtSh'
it to soon dry out. If you use soft water
20 mix the dough you get inuch better
article OF bread, and one that will retain
its freshness.
DIR. Lauder Brunton declares that cold
water is valuable stimulant to many if
not all people. His own experience is
that slipping half wineglass of cold
water will raise his pulse from seventy
six to over 100.
In distance the moon is 2l0, 900 miles,
away from our earth, around which She
gravitates like u satellite. Her diameter
is about 2153 miles; she has solid SUI
face of IL 600, 600 miles, and q solid con-
tent of about 10, 600 of cubic miles.
A German engineer concludes that if
the speed instead of the losd of freight
trains be increased from fourteen tf{
twenty eight miles per hour the EXPENSE
per car mile at the higher speed would
be onc-fourth less for repairs and only
one-iilth more for fuel.
1t is reported from England that form
of ball-bearing has been applied to the
spiudles of textile machinery, and by its.
use the high relative speeds have become,
possible. From 5000 revolutions per
minute is the speed usually obtained. and
1t is claimed that speed us high as IL, 900
can be reached.
On the subject of the swaying Of lofty
chimneys it is declared to be absurd to,
hold that chimney, say 400 feet high,
would sway sixteen inches. The slightest
vibration is felt when on tall chimney,
and one inch and half is thought to be-
about the extreme amount of swayin9.
that takes place.
The deep-sea explorations that have
been conducted by the Austrian Govern
ment in the eastern part of the Mediter-
ranean show greater depths than any be-.
fore recorded, and rs Il result the great
depression of this sea must be shifted
considerably east from its former central
position on the maps.
In sawnills using pneumatic pipes for
taking away the sawdust it is found that
the back of the saw usually throws UP a.
good deal Of fine dust in spite of theyair
suction. This difficulty has now been,
overcome in many instances by an iLven-
ton for admitting air in the saw hopper
in such way as to cause it to impiuge.
on the sides and teeth of the saw and
thus give it an air-blast washing.
II a man weighing 1GS pounds were to,
be transferred to the moon, the weight
of his body, measured, ut least, by tho
attraction which the moon would exercise:
upon it, would be reduced to about
twenty weight pounds. If his muscles and.
his frame remained the same it would
seem as if he would be able to jump over
wall twelve feet high on the small
globe without any greater excrtion than
would be required to clear wall two.
feet high on the earth.