The rustler., 1891-11-27
M TIE ELECTRICAL WORLD.

-TAs powerfai chloro-ehromle h.s-
tery of commandant Renard IL reported
% have been put % use In Franre for
minez' safety lAmp9 The electric
lamp and battery weigh but little more
thAn The ol lamps oommonly used.
While they supply . considerable
stronger light ~ = very moderate Gust
a new form % automatic tslephone
call box has appeared In Germany. BY
The use of which Que may on passing
small coin through q slot be able 20
ring mp the exchange and communicate
with . subscriber. The same idea In .
somewhat different form has been
worked out BY inventors In this coun-
try.
In Seattle. Wash. there are Il Il
stated, six electric railways In opera
ton and another being built and there
are also three electric light plants with
total capacity Of $500 incandesoent
and 200 arc Tampa Every newspaper.
with one exception. Il printed by electric
power The presses in every job print
ing Office are run by electricity. and
electricity furnishes power for all sorts
OF factories
Wire Of exceeding fnenesS having
diameter Of only two one-thousandths
Of an inch, is used in making the re-
ceiving instruments Of ocean cables
This wire In It's manufacture II drawn
through n hole In a diamond plate: and.
small as II is-being much finer than
human hair-it Is wound with a silk
thread which Is smaller still. having a
thickness OF only one-and-one-half-
thousandths of an inch.
The date Of the discovery OF wire
insulation has been called into question
II was earlier than 1895. The first dis.
coverers Of electricity undoubtedly had
TO handle wires very carefully In their
experiments, and they probably
wrapped them In places with some in
sulating material; but the discoverer of
continuous and adherent insulating
coating for the whole length of wire
employed Is not known at present
AT theaters where electricity is the
sole source OF illumination, both of the
auditorium and stage II is necessary TO
have some method OF regulating the
| light between the limits OF total extinc-
tion and greatest brilliancy. To accom-
| plish this an ingenious device has
been adopted, which is operated on tho
principle of increasing or diminishing
the resistance OF the current and thus
dimming or increasing the light This
is accomplished by means OF resist
ance coil, which is thrown into or out
OF the circuit by means of the switch,
Us desired With this apparatus the IL
Elimination of a place Of amusement is
said 10 be under more perfect control
than with gas.
MIR. j. c. Dittrich calls attention in
the Electric Review TO a new method
of purifying and sterlizing water. The
result of series OF experiments with
this new process he says, have proved
that IL is possible Mt u moderate cost, to
render bad aud contaminated water
pure and fit not only for the purposes
of manufactures. in which oure water
is necessary, but what is still more inn
portant to the public in general, fit for
drinking purposes The agent en-
ployed in this new method o. purifying
| water is ozone, which IS the most
powerful known oxidizer, and its en-
ployment for the destruction OF bacteria
in water has met with complete sue
cess.
"A scheme has been put before the
British association, which may possible
lead to n revolution in parcel carriage.
Mr. Bennett, the inventor of the system,
proposes to run small tunnels or
tubes under the public streets,
and inside these TO have an
electrical railway. The size of the
tubes he suggests, would be two feet
wide and three feet high. The electric
trains would be run one above the
other The service would be devoted to
the carriage of parcels, and the means
of distribution thus secured would be
in principle very much the same as that
of the telephone system, the idea being
to have u house-to-house service. The
operations are to be under the control
of the central station, the trucks being
switched into the proper direction by
means of electrical devices