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

will dcyour 5000 flies in one day.
Teak wood contains an oil which pre-
vents the rusting of nails driven into
it.
There is river in Kansas which varies
In width during the course of the year
from three feet to seven miles.
Professor Rogers says that every pound
of coal contains dynamic force equal to
the amount of work man will do in a
day.
A French artist, N. Marcy, has sue
ceeded in photographing flying insect.
The time of exposure was only 1-2500th
of second.
A marine biological laboratory is
about to be established on tho island of
Jamaica in honor of the fourth centenary
Of the discovery of Americs.
A block of carbon 70 Irteen inches
square represents the amount of that ma-S
terial in the bodily makeup of a man of
the average Of 155 pounds weight.
Cyrus Thomas claims to have discov-
cred the key which will unlock the mys-
terry of the Maya codices aud, probably,
of the Central American inscriptions.
Through pneumatic tube seven hun
dred miles in length letters are whirled !
between Paris and Berlin in thirty-6ve
minutcs-at the speed OF twenty miles
minute.
In using what is known rs the Ca
madam method of boring oil wells, q
well 1000 feet was bored in 22S hours,
or an average of AIS feet per hour of
actual work.
According to DR.. Hansen the red in
dowcrs is n single pigment soluble in
water and dccolorized by alcohol, but
capable of being restored by the addi-
ton of acids.
Blaudytc is the name given to the new
material made of Trinidad asphalt and
waste ruober. 1t ressts the heat of
high pressure steam auI lasts we'll in the
presence of oil and grease.
A disease peculiar to Japan is known
as kakc, which is Thought to be the
result of rice diet. The disease is a
slow degeneration of the nervous system
and steadily increasing weakness of the
patient.
Some prominent German engineers
maintain that the application of test
loads to bridges has never yet led to the
detection or defects which could not
have been found by calculation and iu-
spection.
Sir Benjamin Baker has recently shown
that crack or nick on the surface or
edge of bar Of steel does not always
Indicate its liability to fail by the gradual
Speeding of the nick eui a probable
breaking uuder very much smaller load
than a sound bar.
The difference between the so.callcd
"chemical" focus and the visual focus of
a telescope may be little or 1t may be
half an inch. In either case the photo
graphed image will be decidedly ou.4pf
focus if allowance for this difference be
not carefully made.
The rate of progression of a storm is
often fifty miles an hour, and series has
often been traced in direct line from
north to south distance OF 400 miles,
The average altitude of thunder storms
has been found to be not over 5000 feet
above tie surface of the earth.
Melvin Atwood, the aged San Fran
cisco mineralogist, one of the discover
ers of the great Comstock ledge, believes
the chances are excellent for finding in
California one or more of the volcanic
pipes containing diamonds, as at Kim
berly, Du Toitspan aud Bultfoutciu.
DR.. Dareste has demonstrated that
monsters and monstrositics during AMI.
nall A.
pathological changes in the cmbryo, "a
hitherto supposed, but notifications of
the processes of organic evolution, such
rs bring about the difference between in
dividuals and races 10 mankind.
According to a report from Germany
the most powerful electric locomotive in
the world is building at Baden. 1t is to
he provided with motors of total horse
power of 1900, which can be raise,l to
1000 horse power. One motor Is to be
placed directly on each OF the eight
axles, and the locomotive is Designed tor
a speed as high AZ that ordinarily rIed
on steam locomotives.
In many Of the out-of-t he-way places
it has been found necessary to manufabS
ture nitro glycerine on the spot in order
to avoid the very high rates charged by
transportation companies. Such has been
the advance in methods of making this
explosive that, with ordinary precau-
ton, thorough washing, aud careful
watching OF the various changes of color,
it can be made without fear of serious
accident.