Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1889-11-29
POPULAR SCIENCE.

| - nv" l''htir ~ ~ Utcu
put in the hands of metal workers by tho
new discovered process Of chcapcning
oxygen.
The new method of automatically re-
gistcring observations by means of pho
| Biography has been successfully expert
mented with by NJ. Gerard.
Tho smokrlcss powder that Austria is
using makes such fearful smell that it
will have to be abandoned. At recent
practice shoot several men tainted from
il.
An electric spark has been photo
gIaphcd by means Of special camera, in
which the sensitive plate rotated at, 1t in
said, velocity of $500 revolutions per
| minute.
The specifications for the arc light
plant in the Washington navy yard AFRO
said 10 he the most complete OF the kind
ever issued. There are TO he 100 1000.
candle power arc lamps.
DIR. Burroughs, of London, uses nitro
glyccrimc us II substitute for alcohol in
eases OF emergency. II will kill almost
MS surely, and, under favoring crcumstan-
ccs, with less pain to all concerned.
A "paacc chicken car" is the latest
development of luxury in railway trans
portation. Thousands OF chickens can
be carried in one of these cars across tho
continent and in good condition Mt a
great Swing in cost, ns well rs economy
in space.
Highlander, n famous op!icinn OF
Brunswick, has just perfected u new lens,
giving very wide angle, working with
large aperture. Thus il il very rapid,
and can bc used in very confined slna-
tions, such ms rooms for groups and sin
gle portraits.
A Berlin firm are making very power
IN, little magnets for the special purpose
Of extracting iron aud steel lilin:9, from
the eyes and skin Of workmcn engaged
in iron works. These magnets are OF the
horse shoe shape, nicklcplat,d, with thin
rounded poles.
The whole EiiTcl Tower could he lifted
by four men cf average strength. When
few men actually did lift il. Tho con-
siruction Of the tower is based ON thu
cantilcvcr principle, and lis bulk Of 6i00
tons is ST. adjusted ny to press on tho
foundation with less weight than that of u
IMAM in an armchair on tho floor
1f sodium sulpl,atc il allowed to crys-
lnlizc between plates Of unglazcl porcc-
lain in the open mir, and if the crys,allza-
tion it reproduced two or thrcc times by
sprinklinR with water, the plates fall
into powder. The same phenomenon IN
observed with very hard stones. This
crystallizntion may lbs cause of the
communion Of rocks which resist water.
Tho applications of electricity In
mining nrc rapidly increasing; coal cut.
tiers, drills. all kinds Of mill machinery,
ncriai, sur(ncc and underground tram
ways, are AL being driven by electricity,
and the time seems To bo approaching
very rapidly wlcn The transmission OF
power by electricity from distant con
vcnicnt generating ccntcrs To tho seat.
tered mines of II district will be the rule
Experiments Of very interesting M
turc have recently been carried out for
the purpose Of nsccrlaining exactly the
relative resistance Of various pigments To
atmospheric ChhisCS anu W tiiC tOTTOSlNN
action Of sca water. The prevention Of
corrosi0n by salt water was found To ia
possible by the admixlurc Of the oxide o,
somc electro positive metal, such ny ca,is,
tic lime md soda, but the efficiency OF
such n covering diminished when iis aka.
line properties had been ncutrnlizcd by
the absorption OF carbonc ncid.
A vnrintion of DIR. Lodges cxperi-
mcnts made some Time ago on the electro
deposition Of dust has been tried by NJ.
Sorct OF Gencvn, tho result adding
another interesting fact To this pcculiat
class Of phenomena. IN this case M.
Sorct submitted steam TO electric dis.
charges, the effect Of this being that thu
steam was instantly prccipitatcd, and
when the pole Of tho electric machina
was sufficiently near the surface of tho
watcr--thc other pole being boiling-tle
steam was condensed as rapidly ny formed,
presenting the anomaly Of slcamlcss boil,
ing water.