Clinch Valley news. [volume] (Jeffersonville, Va.) 18??-2019, 1889-11-22
POPULAR SCIENCE.

l3e professors and teachers, all bat six,
teen being Japanese. This years stu,
dents number 7SS
Two new minor planets were recent,
discovered, the one, No. 2S5, by Herr
lalisa at Vienna, the other, No. $50, by
NJ. Charlois at Nice.
The United States is supplying clcctri.
cal machinery to Japan in large quaint,
ties. The light is growing in popularity
throughout. the Empire.
An Austrian railway official has in.
vented Il portable telephone for speaking
from railway train Mt any point stop
ping to the nearest station.
DIR. George Nnscx, chief botanist o,
the National Department of Agriculture.
is making II collection of California plants
for the Washington Iicrbbarium.
Experiments have demonstrated the
rracticability of handling large masses Of
iron i'll rolling mills by means of electro
magnets suspended from hydraulic
cranes.
Excellent results are reported from tho
most recent experiments with the Italian
Smokclcss powder. which enables the
men To hit the target twice Us often ny
with ordinary powder.
The total value of the mineral produc.
ton of the United States in tho YEA,
1856, rs near us can hc nsccraincd, was
more ilnn Si60, 900, 900, the largest
amount yet recorded in amy country.
The manufacture of tcrra-cotta lumber
seems likely to become ~ really imporlan,
industry, factories having already been
established in Europe, Canada and Aus.
'ralia, IN addition In the considerable
lumber in the United States
The nnliscptic properties Of saccharino
make it IN effective wash for the mouth
nnd teeth when dissolved in water, nc.
roriing To II French writer. A six per
cent. solution is used, but strength OF
nnly one in 500 is said to prevent fer.
mcntation or spelling Of mucilagr, etc.
Three years hence the planet Mars will
he nearer ,o the cart. than il has been for
alo years "a. -. 1870. Aslrologcrs and
lovers oi the marvellous will br disap.
pointed To hear that nothing of import.
nncc took pnrc when Mars came II few
million miles nearer Ms than il his wont.
According To recent writer, thcru
need In II" anxiety MS to The failure of
sources of energy when the supplies OF
r"nl give out. Roughly speaking, ho
"ys, either lump Of hard coal wcighin.
tw" nnd onc-hnlf pounds, or i53 GALLONS
of water which can be nn,lc To fall ten
feet, will produce commercially onu
horse power Of work.
Professor kc'lzic cmphaiically points,
out the danger OF leaving on the old
paper when rcwprring room. M
room with such wall accommodations of
lmsic and paper can remain in " good
sanitary condition, and discnsc germs ara
likely to bc Developed. Ills advice is:
"l'ccl your wallis of old paper before mp.
plying new paper"
"Among the various uses of ccllnloid, y
Gays London exchange, at would ap.
pear to he n suitable shcnthing for ships,
in place of copper. In experiments by
Nj. l'uininc, plates Of ccluloid applied Ia
various vessels in january lust were re.
moved five on six months after. md
found intnct and free from marina
vegetation, which was abundant on part,
uncovered
process OF engraving on glass and
crystal by electricity has been communi
Gated TO the French Academy of Scicnca
Ivy Nj. Plantc. The pntc to be engraved
is covered with II concentrated solution
Of nitrate OF potash and put in connoc.
ton with one Of tho poles Of the battery,
and the design il traced out with lina
platinum point connected to the Other
pole. Tho results IRE sand to be OF
marvellous dclicncy.
"Volt' means the inducing caused b,
M electrical current, bearing the same ru.
lation to electricity that "pounds pressure
per inch" do To steam or "hcad" does to
water. One cell Of gravity or Danicll's
bnllcry gives nbout l.07 volt potential.
"Ohm" is the unit of resistance offered
by II wire or other conductor to tho
passage of IN electric current; onq
thousand feet No. 10 pure copper wira
represent little over one ohm.