The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1889-03-06
SCIENTIFIC AND INDUSTRIAL

oNAENlAtlO AMI INDUSTRIAL.
Carbon burns less freely in dried thar
In moist oxygen.
Crude petroleum is largely used in
making the Pintsch gas.
The sounds Of the heart have been
recorded and reproduced by the phono-
graph,
The main strength of American
wrought iron is 45, 500 pounds; English,
43, al.
Electricity has not yet had as many
victims as steam, but its dangers arc
deadly.
The pneograph is a novel instrument
devised by DR.. Mortimer Granville, an
English physician.
The gravity road proposed for Read
ing, Penn, may possibly develop into an
electric motor road
Sedan, Kan, has cob pipe factory
that turns out nine pipes minute. They
are sold chiefly in the Fast.
The electric cars are running in Bos-
ton, making good time and otherwise
satisfying the public demand.
Even 10, 600 of the threads spun by
the full grown spider would not be equal
in substance to the size of sing hair.
Boston electricians consider that the
use of electricity to thin out the ranks
of the criminals is degrading that
science.
Robert Eidermann, a German me-
chanic, has invented an electro. magnetic
device for prolonging the sounds of the
pianoiorte.
Woodworkers are using naphthaline
as wood preservative. 1t is said to
leave the wood dry, and with only faint
aromatic odor.
Congress has been applied to for an ap-
preparation of $50, 900 for the purchase
ola new telescope for the charting of the
heavens by photography.
ExperImenters at Manhattan, Kan. have
discovered that the use of salt on wheat
fields will greatly increase the yield. 1t
is also announced that salt will kill po-
tato bugs.
An alum mine has been discovered in
Utah. 1t yields eighty to ninety per
cent. pure alum, which can be extracted
by simply placing the crude material in
boiling water.
1t is reported that Herr Busse, of Lin
den, near Hanover, has invented rubber
paving compound so entirely successful
that there is talk of giving it trial upon
Philadelphia streets.
-glycerine freezes at a tempera.
ture considerably above the freezing
point OF water, and many accidents have
resulted from the ridiculous methods en-
ployed for thawing it.
The posts and trees used as supports
for telegraph wires in various districts in
America are very sharply marked by
bears, VIII ch, it is supposed, are msled
by the humming noises to presume that
there are bees within.
1t has been demonstrated that in pip.
ing natural gas in pipes of one size about
eight pounds per mile of the pressure is
lost, but by using the telescope system,
smaller pipes at the we'll and gradually
increasing the size toward the point of
consumption, the loss of pressure is re-
duced to three pounds per mile.
The preservation of rails in use is not
the result of vibratory motion, or of an
electric action due to the passage of the
trains, but to the formation of magnetic
oxide, produced by the compression OF
the rust on the metal. The rails are thus
protected against the action of moist air
in the same manner as is iron oxidized
by fire.
In an examination of the stomachs of
over 500 English sparrows, according to
Professor Riley, only eighty-two were
found to contain any insect remains at
all, while the stomach of a single truly
insectivorous bird had $50 web worms.
This bird would have given more aid to
an orchardist than an army of the useless
sparrows.