Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1889-05-10
POPULAR sUIENCE.

Out OF flS SWORDS recently tested in
England only 38S passed the standard;
twenty-five were broken in the striking
test,
The explosive projectiles of the Aug
trian nine .centimetal field gun are calcu-
lated to pierce armor at more than 1000
yards.
Steel shields capable of protecting
two men when in trenches and bullet
proof at l'c yards, nre being expert
mented with.
1t has been calculated that not less
than 90, 600, 900 of meteors. each larges
enough to be visible as shooting
star" enter our atmosphere daily.
The new lifeboats ordered by the
British admiralty for torpedo scouts are
made of two thicknesses of rubber, and
have speed of six or seven knots.
Professor Ayrton says that the yicto.
rian age will be more remembered for
the economical transmission of power bv
electricity than for the electric telegraph.
Interesting experiments are being
made in the uses of instantaneous photo.
graphy for the study of the resistance of
the air to tie movement of projectiles.
Powdered resin, according to IT
Hager, is liable to spontaneous combus
ton, owing to oxidation by the air, and
it should be kept in tightly closed tin
boxes.
The fuct that electro magnet induc-
ton tends TO equalize the retardation of
phase for all potentials has great bear
Ing on the clearness of their production
of sound in telephone.
1t was found that the loss by evapora-
ton from large tank for supplying the
city of Nagpur with water was in the
hottest season two and half times 30
great as the quantity supplied for con.
sumption.
Examinations in English schools go
far toward proving that color blindness
is often declared to be present when
really no organic defect, but only poor
training in the naming and distinction
of colors, is found to be the trouble.
The statement is made that aluminium
has been successfully manufactured from
Kentucky clay. A plant was erected at
Newport capable of turning out ton
day at an approximate cost of STA. The
price of aluminium is now SO per pound.
The new wave motor at Point Lobos,
CAL, is nearly completed. 1t utilizes tho
dashing of the waves by turning their
power to practical use. When wind and
tide are favorable it is expected that the
motor will run from twenty to twenty
four hours day.
Large quantities of corn husks are now
used in Austria for making coarse cloth
and very tough aud durable paper.
Wood, also, is made into CLOTH Mitscher.
Itch having devised n process by which
the fibre may be strengthened and pre-
pared for spinning.
A much better preservatiyc of food
than the boric acid, etc., now used foi
keeping fish should be had in sterilized
intiusorial earth, in the opinion of Pro-
lessor p. Waage, the Norwegian chemist.
Enormous deposits of tho earth were
discovered in Norway last year.
Musical tones may be produced from
sand, concludes MIR. G. Gurus Wilson, il
the grains arc rounded, polished, and
free from fine fragments, If they have
sufficient play to enable them to slide
one against the other, if they are per.
fectly clean, and if they possess certain
uniformity and range of size.
One of the most interesting applica.
tons of electric power to mining work is
at the Draue colliery, near Osceola,
where coal cutter is operated by cleo
tricity, Sprague motor being used in
conjunction with the cutter, devised by
Mr.. f. NJ. Lechner, we'll known as the
pioneer in operating compressed AIR in
mines for the same purpose.
Aprosexie is the name DR.. Guye. of
Amsterdam, chooses for inattentiveness.
and he quite singularly finds that the nose
is one cause of it. A dull boy became
quick to learn after certain tumors had
been taken from the nose; and a man
who had been troubled with vertigo and
buzzing in tho ears for twelve years
found mental labor easy after like OPP
eration.
How sponges bore into solid limestone
or shells is us yet an unsolved problem.
NJ. Nassonoff has investigated u new
species of Clone which tunnels oyster
and mussel shells, aud he believes that
the boring Of the canals and galleries is
performed solely by the soft parts of tho
sponge. The penetration of the pro-
longation of the body of the sponge into
the shell appears to be accomplished by
the secretion of corroding liuuid,
probably an acid.