Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1890-01-24
POPULAR SCIENCE.

Iron or steel Immersed in warm solu-
ton of carbonate of soda (washing soda)
for few minutes will not rust.
Edgar +. Lincoln, of Topeka, Kan, has
taken out more patents during tho last
two years than any man in the country.
An electrical instrument has been in-
vented which is designed to remove the
pain Incidental to the extraction of teeth.
An Eugiigh surgeon has made series
of experiments in Bengal which confirms
the belief that cobra poison docs not kill
these snakes themselves.
Herr Ebors, German cXpcrimcntcr,
has found that the human cyc is more
sensitive TO green rays of light than to
red rays, and to rcd than to blue rays.
1t is estimated that there are 5, 600. 900
of people who walk about London's
streets daily, and i'll So doing wear away n
ton of leather PARTICLES from their boots
and shoes.
Silk thread Is soaked i'll acetate of lead
Ito increase its weight, aud persons who
pass ii through the mouth in threading
needles and then bite it of with the teeth
have suffered from lead poisoning.
An incandcsccnt lamp arrangement for
showing the interior of boilers while I'M
der steam, has been maic 10y u German
inventor. The device is likely to bc of
practical, as we'll as of scientific, value.
In Moscow foundry castings are
made from metals fused in an electric
furnace. The operators work two hours
per day, the glare being greater than that
of the sun, and uncomfortable for II large
time.
Experiments communicated To the
Frcnc! Academy Indicate that disease
microbes may not Only nttcnuitcd until
entirely harmless, but may bc rcvivilicd
by degrees aud givcn the most yirulcnt
character.
The oldest mark of human life is be-
licvcd to be II flint idol recently brought
up from depth of 800 feet by sand
pump near Boise city, Idaho. ANIL now in
the possession OF Professor c. Frederick
Wright, Of Obcrlin College
All plants and trees consume water in
large quantities. Sir John Laws discov-
cred that an acre Of barley will take up
1921 ions Of water in two days. Trees
and plants are composed more largely of
water than any other substance.
Lizards present II strange phcnomcnou,
Their tail, brittle and easily broken. lives
for II considerable length oi time after
being separated from its bearers body;
and, more than that, the lost tail IN in
comparatively short time replaced by au-
other, similar To The amputatc,l one.
1t is II curious fact, So announced, that
cider scaldcd to l25 degrees or 1870 lie
grccs will not make vinegar. rs this
heat destroys the bacteria thai forms vine.
gar. This same temperature destroys the
bacteria in the silo, and this is perhaps
the explanation why il remains compare.
lively sweet.
An invention is said to have been
patented in New Zealand and in Other
colonies which, ii il does all that is
claimed for it, will rcvolutionizc the set
Element of bush lands. 1t is II compost
ton which, when trees ARE inocuiatc,l
with ii, mnglcs itself with the sap and
circulaics through every branch and leaf,
utterly destroying the life and rendering
the standing tree in three months lime
dead and rotten, and so highly imilam-
mabc that when fired it burns away liter
ally root aud branch.