The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1893-01-18
SCIENTIFIC AND INDUSTRIAL.
The diamond drill is pointed will
black diamonds.

The diamond drill is pointed with
black diamonds.
All twisted boring tools are said to be
of American invention.
A cure for lumpy jaw, says Secretary
Rusk, is iodide of potassium.
In a recent parade in Youngstown,
Ohio, the search lights were operated by
threshing engines.
An enterprising scientist has discov-
cred that liberal use OF soap is sure
preventive of the cholera.
Steps are being taken to establish tele-
phonic communication between Den.
mark and Sweden, under the sound.
1t is said that little tungsten added
to pure aluminium obviates all difficulty
from attacks by water, salt or otherwise.
A new signal telegraph consists of
electric lights for the signals and key
board that works the lights according to
the Morse system.
Some recent investigators claim that
the sweetness and fragrance of the very
best butter is due to certain bene6cent
species of bacteria.
At the present day most heavy tunnel
work is done by machine drills, driven
by compressed air, which also serves to
ventilate the works.
Aluminium sheets will make much
more durable and satisfactory roofing
than sheet copper, now generally used in
valuable buildings.
Electricity will be successfully applied
to railroad locomotives within the COM
ing twelve months, all claims to the con-
trarY Notwithstanding.
The electric street cars Of Albany, n.
Y, are provided with an automatic de-
vice that shows the name of each street
just before it is reached.
Adulterated rubber is recent discov-
cry. A dry farina -four is mixed with
milk of the rubber tree, after which it is
smoked and dried by the usual process.
Chlorine gas, decomposed from sea
water by means of electrical machines,
is employed for disinfecting the hold,
storeroom, etc., of vessels Of the Italian
navy.
Some of the English pumping engines
perform work equaling the raising of
100, 900, 900 pounds one foot high by
the consumption of one hundredweight
of coal.
Wonderful improvements iu iron and
steel making are promised. which will
greatly reduce the cost, and increase the
use of these metals in all of the indus
tries and arts.
Joseph B. Strauss, of Cincinnati,
claims to have perfected an electrical
signalling device by which fireman at
a large nozzle can communicate with the
man in charge of the fire engine.
1t is proposed to erect an electric over
head road from the Chicago Postoffice to
the Exposition grounds, to transmit the
mail at a high rate of speed. The road
will be built over the tops Of the houses.
The facility and speed with which
temporary field telegraph lines may be
constructed and operated is shown by
General Greely, who tells of a corps
working for the International Boundary
Commission, which set up and took down
a telegraph line thirty-ive miles long in
three days.
An English firm is introducing an in
genious safety device for use in electric
generating plants. When the current
in any circuit is too great, compound
metal strip bends till it breaks mer-
curry contact. There is also a small wire
fuse so that no sparkling takes place.
The mercury contact is under oil.