The Banner-Democrat. [volume] (Lake Providence, East Carroll Parish, La.) 1892-current, 1893-10-14
IN THE ELECTRICAL WORLD.


/ IN THE ELECTRICAL WORLD.
| The combined length of the world
telegraph lines is ss1, 900 miles, or
enough to encircle the earth about SO
times.
The telephone has been adjusted to
divers suits, so that, when under water.
they can converse with persons above
the surface, and report what they see.
The supreme court of South Dako-
ia has decided that the Western Union
Telegraph Co. or any otier company
must accept messages whether written
on the regular blanks provided for the
purpose or not
| The telephone was first practically
used in England in 1875 when over rs
miles of wire existed between London
and Norwich, but no telephone ex-
change was established until 1879, when
ten Offices were connected.
The Westinghouse Electric and
Manufacturing Co. are planning to
build near Pittsburgh the largest fac
tory of its kind in the world. The
company will then concentrate its en-
tire electrical manufacturing, and en-
ploy 1000 to 5000 men.
Because of the introduction of the
electrical railway in Brooklyn, some
parts of the city are suffering plague
of rats, owing to an exodus of the ami
mails from the car stables which used
to be needed by the 81, 900 horses that
have been supplanted by the 400 troll
ley cars now in operation. Now, that
the horses have been taken from the
stables, the rats are looking for new
feeding grounds.
AN English medical journal sug-
gests that the action of electricity on
lead water pipes may sufficiently in-
pregnate the water with lead to cause
poisoning. Here is a chance for some
experiments with view to determin-
ing whether water is thus affected, or
not, under the conditions named. If it
Is, it might result in cases OF serious ILL
ness the cause of which ordinarily
would be difficult to determine -Elec-
trical Age.
"A cable is soon to be laid from Lisbon
to the Azores A British company will
lay and own it, and, if the proposals
favorably reported by special COM
mittee are accepted by the Cortes, will
have exclusive power to connect the
Azores with North America and Cuba,
and with England or other points in
Europe. Such connections would form
highly important new route between
America and Europe. All existing
cables to Europe are under the far
north Atlantic, starting from Nova
Scotia to Newfoundland.
The British government has under
consideration plans to provide the peo-
pie of the United Kingdom with the
best telephone service possible. One of
the projects advanced by the officials of
the post Office department is the estab-
lishment at Leeds, in the very center
of England, a telephone exchange with
which every large town in the king
dom shall be connected. 1t is intend
ed that the work in the towns them
selves shall be done principally by
the telephone companies, but the post
Office will open exchanges in towns
where there are no companies.
There has recently been tested in
the hospitals of Paris an instrument
devised by M. Tavernier for the cleo
trical transmission of the temperature
of fever patients. In addition to a
Thermometer a fever measurer' is
placed under the arm-pit and is con-
nected electrically with recorder in
the service doctors room. When the
temperature of the patient rises one or
more degrees record of the fact is
transmitted, SO that the physician can
ascertain the condition of patient at
any moment without leaving the room,
the recorder being provided with a
number corresponding with that on the
bed of the sick person.
The duplex and quadruple SYSTEMS
of telegraphy begun by Mr.. Edison in
1869, and finished after six years of
work, have saved in America alone
the enormous sum of SIS, 900, 600. By
the duplex system two currents of diff
ferent degrees of strength were sent
over the wire m the same direction.
thus doubling its efficiency: while the
quadruplex arrangement became pos
sible when it was discovered that these
two currents could be sent in opposite
directions at the same time-thus en-
abling one wire to transmit four stimuli |
taneous messages Not satisfied with |
this, Mr.. Edison. is confident of attain
ing sextuplex and octuplex systems.
Review of Reviews for July.
The famous French electrician, Nj. |
Trouve, has been turning his attention
to the production of new storm effects |
in theaters. The old way of making
theatrical lightning was to fash 1yco-
podium powder behind zigzag line |
cut in the scenery. M. Trouve's newt
way consists in moving q long bamboo |
rod up and down in q zigzag direction |
and flashing small incapdescent lamp |
attached to the end of the rod. The
is done by starting and stop
ping the current with commutator |
by the foot. Very effective |
lightning is also made by rubbing to- |
gether an old file and piece of carbon,
which are attached to the ends of wires
with the lighting circuit
Hard ON the Cat Either Way.
A small boy had dog that was
rough, as most small boys dogs are.
and q young girl who lived next door
had kitten, sly as all cats are. One