The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1891-05-06
SCIENTIFIC AND INDUSTRIAL.

Berlin will not permit an electric road.
Denver, Col, will have a mineral
palace.
Cork covering for steam pipes has
proved very successful in England.
Many of the explosions in flour mills
have been traced to electricity generated
by belts.
In Denmark the life-saving stations are
all supplied with oil for sitting the
waves in storms.
A new bag machine both cuts and
sews the bag, and thus saves the labor of
fourteen operators.
It takes about three seconds for a mes
sage to go from n end of the Atlantic
cable to the other; this is about zoo
miles a second.
In welding pipes by electricity, it has
been the usual practice to employ inter
nal mandrels to prevent collapse or
change of circumferential o~ntline.
A large body of anthony has been
found in Inyo County, California. The
owner says he has in sight powders of
the metal weighing from two hundred
to three hundred pounds. 1t is a val
liable find.
Miss Frye, a school teacher, has dis
covered a method by which better tiles
can be made than have ever been made
before. She has a patent and is likely
soon to turn from school teaching to
6nanciering.
The exhaustive experiments at Stafford,
near Manchester, England, with a view
Of ascertaining the most efficient method
Of purifying sewage, has resulted in the
recommendation of an electrical system
as the most satisfactory.
Small articles made of malleable iron
are nov finished and polished bright by
being placed in revolving drums with
curriers' shavings, from which they
emerge with all of the rough edges
smoothed and the surface highly pol
ished.
A secret chemical powder introduced
abroad, when s~prinkled over the top of
the coal in a newly made fire cements
the upper part of the fuel together and
causes the coal to burn at the bottom
and throw the heat into the room in
stead of allowing a large part of it to &c
up the chimney.
A process has been recently invented
by which iron may be copper, the sur
face of the iron being protected by
layer of melted cryolite and pho1phoric
acid. 1t has been found that if the ar
ticle, when immersed, is connected with
the negative pole of q battery, the cop
pering is done more rapidly.
By a new process waste leather scrap'
are stepped in a solution and subjected
to a hydraulic pressure to mould then
into railway brake shoes. The Leather
shoe weighs At pounds against 81
pounds for iron, and it will wear thre,
times as long. Such, at least, is tn,
claim Of the compressed leather men.
A permanent and durable joint can b(
made between rough cast-iron surface;
by the use of lead to make a very stiff
putty. This will resist any amount O
heat, and is unaffected by steam or wa
ter. 1t has been employed for mendinG
or closing cracks in cast iron retorts useC
in the distillation of oil and gas from
camel coal.
High tunnels seem to be CROWN,
more and more popular among the build
ers at the yards of the British navy. Tn
Merseo has had hers doubled in height
while those of the Blake are not less tina
fifty or sixty feet, reaching as far up a
the tops. 1t is said that the result, a
far as appearances are concerned, is any
thing but pleasing.