The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1890-07-30
SCIENTIFIC AND INDUSTRIAL.

Aluminium bronze is coming into ex.
tensive use.
The health officer of Chicago refuses
to accept "heart failure" as a cause Of
death.
Chicago, H., is ISL feet above the sea
level. st. Louis, Mo-, lies about 10O
feet lower.
An italian torpedo ram fires AS
pound projectilc through twenty-six
inches of iron.
An immense deposit of fine oolittic
limestone has been discovered northeast
of Mitchell, Ind.
A system has been introduced for roll
ing liquid steel into thin sheet steel, free
from blow holes and scales.
A new megaphone has been introduced
in England, which magniies the human
voice SO that it can be heard sere:al
miles.
Water and the sap on trees expand not
only in proportion as they rise above,
but also as they go below the freezing
point.
An immense electrical plant is to be
erected near Brinton Station, Pittsburg,
Penn. 1t will be 600 feet long and 400
feet wide.
A deposit of black slate 1900 feet wide
and two miles long has been found near
Pine Grove, in Pennsylvania, on lands
belonging to railroad.
New England capitalists have agreed to
invest 1000, 600 in Laredo, Texas,
in putting up textile mills, and the Ci,y
Council have accepted the proposition.
Toast is more easily digested than
plain bread-if the toast is eaten soon
after it is made. Toast that has grown
Geld is not so easily digestible as bread.
Duplex telephony, it is now thought,
will play an extremely important part in
the solution of the difficulties in connec-
tion with the long-distance telephoning.
An Oakland, CAL. mechanic has in.
vented a new rail for railroads, consist
ing of two parts, put together so as to
leave an opening for any humber Of tele-
graph wires, whereby perfect insulation
is secured.
A large quantity of clay is used in
paper making to give it body and a
smooth surface, but not to cause the
! fibres to interlace and hold together.
| This they do naturally and very firmly
as the paper is pressed between the
heavy heated rolls.
The Louisiana Electric Light Company
at New Orleans, La, have given orders
| for two new driving belts, which will be
| 100 feet ~ inches (six feet wide) double
belt and $50 feet 4S inches -four feet
wide) double belt. These are the
| largest belts ever made, and it will re-
quire the hide of more than 600 head of
cattle to make them.
The extreme scarcity and high price
of camphor IN this country has induced
two or three firms to place on the market
highly refined naphthalene suitable for
the preservation of woollens, fuss and
other articles from the destructive attacks
of insects. The naphthalene is produced
in several forms, the more saleable being
balls, tablets, scales and granulated.
A regular industry is being started in
this country in the manufacture of gear.
ing for electric railways out of raw hide.
1t is preferred to metal, as it makes far
less noise and wears better. The mate
rial is said to finish up in the working as
we'll as metal. The use of this material
indicates that very severe strains are
brought to bear upon cogs not capable,
if of metal, of standing the stress.
All freight cars hereafter built by the
roads in the Vanderbilt railroad system
are to be equipped with air-brakes, and
all colored line and local box and stock
cars of thirty-four feet in length and
upward now in service on the Wander
bilt roads are to have air brakes attached
as fast as they come into the shops for
repairs, and all such cars SO built or re-
paired are to be equipped witA a self
coupler.