The Middleburgh post. [volume] (Middleburgh, Snyder Co., Pa.) 1883-1916, 1889-10-10
POPULAR SCIENCE.

The Imperial University of Toxic has
13S professors and teachers. all but six.
teen being Japanese. This years stu
lents number 7SS.
Two new minor planets were recently
discovered, the one, No. 2S5, by Herr
Palisa at Vienna, the other, No. 2S6, by
NJ. Charois at Nice.
The United States is supplying elcctri-
cal machinery to Japan in large quanti-
ties The light is growing in popularity
throughout the Empire.
An Austrian railway official has in.
vented a portable telephone for speaking
from a railway train at any point stop
ping to the nearest station.
DIR. George Nasez, chief botenist Of
the National Department Of Agriculture,
is making a collection of California plants
for the Washington Hcrbbarium.
Experiments have demonstrated the
practicability of handling large masses OF
iron in rolling mills by means of electro
magnets suspended from hydraulic
cranes.
Excellent results are reported from the
most recent experiments with the Italian
,mokeless powder. which enables the
men to hit the target twice rs often as
with ordinary powder.
The total value of the mineral produc
lion of the United States in the year
1856, as near as can be ascertained, was
more than S4G0, 600, 900, the largest
mount yet recorded in any country.
The manufacture of tcrra-cotta lumbe,
seems likely to become . really important
industry, factories having already been
established in Europe, Canada and Aus
trali8, in addition TO the considerable
number in the United States.
The antiseptic properties OF saccharin,
make il an effective wash for the mouth
md teeth when dissolved in water, ac-
coriing to French writer. A six per
sent. solution is used. but strength of
only one in 500 is said to prevent fer.
mcntGtion or spelling Of mucilagc, etc.
Three years hence the planet Mars will
be nearer to the earth than it has been for
jlj years CA. ID. 1870. Astrologcrs and
lovers OF the marvellous will be disap.
pointed to hear that nothing of import
ance took place when Mars came Il few
million miles nearer us than is his wont.
According to recent writer, there
nced be no anxiety as to the failure OF
sources of energy when the supplies of
coal give out. Roughly speaking, he
says, either lump of hard coal weighing
Two and one-half pounds, or 4j3 gallons
&c, Il, L.. 4 F.n
feet, will produce commercially one
horse power of work.
Professor Kcdzie emphaticaly points
out the danger of leaving on the old
paper when repapcring room. No
room with such wall accumulations Of
paste and paper can remain in good
sanitary condition, and disease germs are
likely to be developed. His advice is:
"Peel your walls ol old paper before APP
/ plying new paper"
"Among the various uses Of celluloid,"
says London exchange, 'it would APP
pear to be suitable sheathing for ships,
in place of copper. In experiments by
M. Butaine, plates of celluloid applied to
various vessels in January last were re-
moved five or six months after, and
found intact and free from marine
vegetation, which was abundant on parts
uncovered
A process of engraving on glass ano
crystal by electricity has been commune
rated to the French Academy of Science
by NJ. Plante. The plate to he engraved
is covered with concentrated solution
Of nitrate OF potash and put in connec-
tion with one of the poles of the battery,
and the design is traced out with fine
platinum point connected to the other
pole. The results are SAID to be Of
marvellous delicacy.
"Volt" means the inducing caused b,
an electrical current, bearing the same re-
lation 20 electricity that pounds pressure
per inch" do to steam or ''head" does to
water. One cell of gravity or Daniels
/ battery gives about 10Y volt potential.
"Ohm' is the unit of resistance offered
| by wire or other conductor to the
passage of an electric current one
thousand feet No. 10 pure copper wire
represent Il little over one ohm.