The Penn's Grove record., 1882-08-26
Science,
Phosphor bronze has an electric con-
ductivity two and a half times that of
iron or steel and one-thiId that of cop


per.
Certain physicians say that crying
should not be repressed In children, as
the consequences may be Saint Vitus'
dance or epileptlc fits.
The longest span of wire in the
world Is used for N telegraph In India,
over the River Kistnah. between Bezo-
rah and Sectanagrum. 1t is more
than 5000 feet long, and Is stretched
between two hills, each Of which Is
1900 feet high.
In Switzerland small coins are now
made from pare metallic nickel rolled
by the Fleitmann process. These
coins are said to be much superior to
the alloy of % per cent. of nickel and
rs per cent. of copper heretofore used
there.
Experiments have shown that firing
with a nine inch twelve ton gun at
armor plating three and four inches
thick, representing a deck OF a vessel
inclined between ten degrees and hf-
teen degrees, in no instance caused
penetration, although full charges
were used.
The Illustrated RdilWdy World, re-
ferrlng to the production of steel rails
in the United States. say 8 that In 1874
we produced SO $50 tons of steel rails
and imported so, 701 tons. la 1880 we
produced 967, go on and imported
275, 900 tons. Since the first steel rails
were produced here in 1875 we have
used 4 SO, 600 tons of theju, at a cost OF
$iS4 .000, 700.
Regarding explosions in -four mills
Thomas J. Richards, of the British
Board Of Trade, says that the elements
of danger exist in all corn mills, the
difference being in degree merely, and
not in kind. Although disasters OF
the explosive sort are rare, they are
ever liable to occur IN all corn mills
and ca use accidents more or less dis
astroIs.
BY the adoption of preventive mea-
sures to guard against expected cpl
denies In certain English towns Mr..
Edwin Chadwick estimates that three
fourths of a million lives and three
million cases of sickness have been
saved. This seems a somewhat start
ling statement, but the figures are the
result of statistical comparisons, and
are probably correct.
DIR. Samuel W. Francis, Newport,
R. l., reports the successful treatment
of an acute case of pneumonia by the
inhalation of .ulphuric ether. He says
that "if seen early during the first
stage, by inhaling ether for thirty
minutes, every six hours, many severe
and protracted eases of sickpess would
be arrested" DIR. Francis recon-
mended inhalation of sulphuric ether
for bronchitis In 1868.
A mill-pi maker advises that in
grinding picks the pressure be not too
gre 1t, and that sufficient water be used
so that heating, which always injuries
the temper. be prevented. 1t should
be borne in mind hat cracking picks
should not be used for furrowing, and
no pick should be used after it's edges
are. worn too blunt. When picks are
blunt grind them to a straight level
one-eighth or three-eighths long.
Professor Whitney does not lay any
weight on the removal of forests as a
cause for the dryness and d~esolation OF
former fertile and populous regions of
the earth. He admits that the greater
proportion of land to water in late
geological eras may have a little to do
with the decreased rainfall; but he
attributes the diminished precipitation
mainly to a lowering of the intensity
of solar radiation during geological
time.
ALI know that air has weight, but
one is apt to have vague ideas as to the
weight of comparatively limited guam
titles Of it,. A cubic foot Of air weighs
$751; grains, or something over one
ounce; IS 06 cubic feet weigh one
pound. About 65 cubic feet of air
furnish one pound of oxygen. An
apartment 8 feet high, II feet wide
and IS feet long contains about 100
pounds of air; and a room 40 feet
square and 10 feet high contains about
q ton.
The art of making glass is of high
antiquity, but it belonged to modern
ingenuity to develop the value of the
invention, and to apply it to a multi
tude Of important and in some eases
indies 1ensable uses. Not many centu-
rles aga window-glsss was only found
In the houses of he very rich. It's use
began in palaces. For q long time II
was SO scarce that at Alnwiek Castle
in 1867 the glass was ordered TO bs
| taken out of the windows and laid W
in safety when the lord was absent.
Instead of the usual soitd case Of the
Bell telephone, Herr Konigslieh, o
Hamburg, provides a cas- in which
the space between the membrane ano
the magnet is enlarged into a thin
sided sounding. case, and under this IL
a resonance. case, which surrounds thu
other at a certain interval. The reso
nance case is perforated at certain
places. The inventor claims that h'
thus obtains q considerable strengthen
ing of the sound also a pnrer snC
more distinct transmission.
Burning tbs cobs.
Cor. Country Gentleman: 1t Is GU
custom to rake the cobs into neat win
rows about foot high, and after tn