The Forest Republican. [volume] (Tionesta, Pa.) 1869-1952, 1891-07-29
SCIENTIFIC AND INDUSTRIAL.
Blasting is done by electricity.

Blasting is done by electricity.
Electric cranes are increasing in use.
The brain of man exceeds twice that
of any other animal.
A man breathes about twenty times a
minute, or 1900 times an hour.
One dollar minute is the charge for
using the new London-Paris telephone
line.
The great telescope of Lord Rose, in
Ireland, has speculum six feet diame-
Ter, fifty-tive feet focus.
Pennsylvania makes fifty-two out of
every 100 tons Of rolled iron in the
United States, and sixty nine out of
every 100 steel rails.
1t keeps thee large Chicago factories
busy to manufacture the locomotive
headlights and railroad lanterns that
are used in this country. The factor
les give employment to 100 men and
boys.
A number of fine residences in the
Back Bay section of Boston are being
equipped with elevators operated by
electric motors. The machinery is very
simple and compact, and the elevators
Will carry two or three persons at good
speed.
An English firm manufactures q COM
bined oil engine aud dynamo. A large
number of these engines have been built
and sent throughout the various colo
MES, where they are said to be oper-
ated with especial economy for small
! plants.
Phosphorus is now made by aid of
electricity in England, the mixture of
phosphoric acid being deComposed by
the heat of an electric arc embedded in
the mass. This local application of heat
is SAID TO be more economical than heat
ing in large retorts by the ordinary
process.
Electricity has superseded steam
power at the royal foundry at Wurtem-
burg, the dynamo being driven by a
large turbine water wheel. The stream
furnishing the water is some distance
! from the works, the electricity being
conveyed across the town by overhead
conductors. The current operates some
twenty-five lathes and polishing ma
chimes.
A Warsaw engineer has invented a
new harness by which the danger of shy
ing horses is averted. 1t is so arranged
that by pulling a string which is at
tached to the drivers scat the horses are
at once unhitched and the vehicle is
| brought to a standstill. The invention
was tried by the best horsemen in the
city and found perfectly successful. A
model of it has been sent to st. Peters
burg with an application for patent.
NJ. Mareelhacy has made some addi-
tional improvements in diving apparatus
which have received the approving in.
dorsement of the French auth critics. Ii
this arrangemement, instead of the heavy
electric hand lamp, employed ordinarily
by divers, the plan is to affiX powerful
glow lamps at the top of the helmet, 50
that the divers hands are at all times
free for work. The lamp is connected
by conductor with battery either on
shore or in vessel above as the case
may be.
The practicability of telegraphing
without wires has recently been demon
strated by the success of several expert
ments. Not long ago Mr.. Preece, the
head electrician of the postal telegraph
system in England, succeeded in estab-
fishing communication across the Solent
to the Isle of Wight, and telcgraphed
also across the River Severn, without
wires, merely using earthquakes at a suf-
ficient distance apart. 1t is now proposed
to make practical use of this system in
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