Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1889-12-06
POPULAR SCIENCE.


Some Italian observers have been re-
Gently testing the senses of criminals.
and they find these dullcr than in tho
average of people.
But for mechanical invention astrono
mic science could have had very little
growth. Science and invention work
together like the nerves of motion and
the nerves OF sensation.
At the time when railroads were first
introduced into Germany, the Royal Col
lcgc of Physicians in Bavaria signed and
issued protest against the new mode of
travel. ''Locomotion, il declared, "by
means of any kind of steam enginc
should be prohibited in the interest of
public health.
The recent discovery by New Eng
land chemist of IL cheap method OF dis
solving zinc by combining it with hydro
gen is regarded Us most valuable one.
The product is II solution called zinc
water, and has the property of making
wood to which it has been applied alb
solutcly lirc-proof, and Mt very low
cost.
There is popular impression that bats
anu swallows carry around and distribute
bcd-bugs DIR. .loscsh l.cidy has often
examined these creatures without finding
any. lie has, however, found a species
OF cimcN in swallow, that one might
readily mistake for the genuine article.
lie has also found an allied parasite on
bats from Panama Bay.
Since Humboldt witnessed fish thrown
from the volcano of Cotopaxi, in 1903,
1t has been found that the phenomenon
IL repeated from time tn time during
crtiptions, and that it occurs also in other
volcanoes of the Andes. The fish arc
sometimes elected in vast quantities. All
belong tn one species, which exists in
some of the lakes on the sides of the
mountains.
The submarine topcdo boat of Lieu.
tenant Pcral, launched in Spain. somo
weeks ago, ia about seventy fee; long
and nine feet wide. with displacement
of cightyscvcu tons. Its twn screws nrc
driven by powerful electric accumulalors,
tn br charged from station on shore,
and it is supposed to bc able 10 provide
rcspirablc air sulicicn, To sustain itl
crow of seven men forty eight hours un
der water.
DIR. Gravcnigo. Of the University Of
l'alua, Is said To have successfully per-
formed an operation which hitherto hna
been vainiy tried 10y various expert.
mrnicrS, both III France and elsewhere.
The operation consists in the grating of
chickens cornca into the human eve.
In the successful ease reported by Ora
vcniSo the graft is said To have united
quickly, and formed corncn which was
very transparent, shining and convex.
The discovery of II new opiutc by Pro-
lessor knst, of trciburg, IN announced.
IL has been called "Smlfonul," and be-
longs To the "lisul plates group. The
crystals nrc tnstclcss. without smell, and
readily dissolved. II il stated Ia have
the property of producing sleep in in
valids, particularly nervous people, but
not in healthy people. Such drugs
should, of course, only be used under The
authority of II qualified medical adviser.
In the laboratory of the State Mining
Bureau in San Francisco discovery was
made recently which is highly priced In
working specimen of sulphidc or blonde
ore sent from mine in Shasta County,
Cal, II small piece Of nntivc metallic zinc
was secured. This IL the first piece of
the character named ever known to have
been secured in this country. Late works
on mctnlurgy note the existence in the
mines of Nictorin, Australia, Of the only
native metallic zinc known.