The sea coast echo. [volume] (Bay Saint Louis, Miss.) 1892-current, 1892-06-11
IN THE ELECTRICAL WORLD.

England and France are now con.
nected by double system of telephone
communication.
What is believed to be the highest
electric central station in the world is
located at Pontresina, in the Swiss
Alps, the altitude being 5000 feet above
the sea level
Mayor Latrobe, of Baltimore, re-
Gently signed the ordinance authorizing
the Central Passenger railway of that
city to use electricity as motive power,
instead of horses.
Samuel b. +. Morse graduated at
Yale without giving special attention
to electric studies, but gave his mind
chiefly to portrait painting. His fame
as an electrician was the product of an
interest In electricity acquired subse-
quently while travelling and studying
art in France.
-Manganin, which is an alloy of cop
per, nickel and manganese, has remark
able electrical properties. It's resistance
hardly varies at all even through
range OF temperature varying from Is
to 81 degrees centigrade. 1t thus be-
comes superior metal for the construc-
ton OF artificial resistances.
+ The most powerful electric light
house in Europe is said to be the new
one erected at Hantsholm, on the Scaw.
The total height at the lighthouse is
100 feet, and the strength of the light
is equal to 100000 standard wax can
dies. Even in rainy weather the light
may be seen 80 miles distant.
An elaborate and extensive tele-
phone arrangement has just been COM
pleted in Woodside Established church,
Glasgow, Scot, whereby the subscribers
to the system are enabled to hear the
entire service of the church at their
homes, and with the utmost distinctness
and ease. A large number of English
churches are said to have a similar ar
rangement, but of less extent.
Complaints have been made by sev.
eral of the large banks in New York and
other places of the large number of
lightweight twenty-dollar gold pieces
which have lately been shipped from
California. 1t is believed that the coins
have been subjected to Sweating
process by electricity, by which as
much as seventy-fve cents or a dollar is
extracted without material defacement
of the coin.
"A statistician has computed that
there are at present in the world, under
state management, 1910 miles of SUBJ
marine cables, with 10, 426 miles of wire,
and in the possession of private COM
panies 112,937 miles of cable, with 49,
sS5 miles of wire, being a total, there
fore, of 1875, 116 miles of cable, with 1885,
311 miles of wire. Those cables are all
in operation, besides which there are
several long and short lines in course of
construction.
M. Gustave Trouve, the inventor of
flying machines, has been making
large number of experiments with a
new electric boat. 1t has two side pad
dies made into the form of wheels with
hollow rims to act as floats, and also
provided with vanes like mill wheel.
At the stern there is third, but small
er, wheel of the same sort as steerer,
The tricycle. principle has been adopted.
These combined wheels and floats are
oliVCA ny clcCUTlC IuOJOrS, ana Ule elCC-
tricity is derived from battery of zinc
and copper plates, floating in the water
and towed astcrn. With this arrange.
ment there is no need for charged ac-
cumulators on board.
Electric welding is now applied to
the work of manufacturing iron wheels.
The process of welding the hub, spokes
and tire of wheel is accomplished in
thirty seconds. First the tire is laid on
the machine, then half OF the hub,
which contains notches in which the
spokes fit. The latter are laid in the hub
and inserted in the tire, and then the
other half of the hub is laid Oh top Of
the lower half. These are held to-
gether by hydraulic pressure. Tho
electricity is turned on, the iron be-
comes heated to the proper degree and
YIELDS. The pressure is removed. the
now compact wheel taken from it's rest
ing-place, r.-tied aside and allowed to
cool. The work is done in very much
less time than it took by the old process,
Evnrv Tn "A tinH