The Republican. [volume] (Oakland, Md.) 1877-current, 1895-04-04
IN THE ELECTRICAL WORLD.

The Virginia Telephone Co., Of
Norfolk, Va, having obtained a char
ter, has asked the Norfolk council for
franchise permitting the company to
establish plant. Its officers guaran-
tee efficient service at two-thirds of
present rates.
An English chemist named Arm
strong asserts it as his belief that no
chemical action ever takes place except
in the presence of some substance cap
able of being decomposed by electric
ity, and that therefore all chemical
phenomena are electrical.
Prof. Lucien l. Blake has succeed
ed, it is said, in establishing electrical
communication by wire between the
land and vessel anchored several
miles out in the ocean. Prof. Blake is
Kansas man and occupies the chair
of physics and electrical engineering
at the Kansas State university.
Within radius of 80 miles of New
York city, says Electricity, there are
$500, 900 people and 25, 200 telephones.
In New York city proper there are 1O,-
which are equipped on the metallic cir
cult system. In that city the Metro
politan Telephone & Telegraph Co. OPP
crates 10 central exchanges, seven of
which are entirely for metallic circuit
service. The New York e. New jersey
Telephone Co. has 10000 subscribers,
about rs per cent. of whom enjoy the
metallic circuit system.
An improved multiple telegraphic
instrument has been introduced into
France, in which each key sends over
the line wire at each operation an in
termittent current corresponding to a
definite number of vibrations a minute.
The receiving saunders are each in a
similar way sensitive only to currents
having determined rate of vibrations
corresponding to one of the transmit
ting keys. Consequently each receiver
selects and responds to the current
sent by transmitter having a CORE
spending period cf vibrations
A new telephone system is said TO
be under consideration in Albany, n.
Y. 1t is proposed to place telephones
in several places easy of access, where
anyone who wishes to send a notice or
paid advertisement to any of the AL
bany papers can do so with very little
trouble. The plan was submitted
some time ago to several of the news
papers of Albany. 1t has been pro-
posed to place these instruments in
branch offices, in stationery or drug
stores, in remote parts OF the city and
suburbs. The Office will be kept open
all day and until late at night, The
promoters of the scheme have tested
five telephones connected with mile
wire with satisfactory results, viz: the
Phoenix, Harrison, D'Unger, National
and Colvin.
According to Nature trials have
been made in London. Eng, of a new
apparatus for extracting teeth by cleo
tricity 1t consists of an induction
coil of extremely fine wire, having an
interruptor capable of vibration at
the rate of $50 times a second. The pa
tent sits in the regulation arm chair,
and takes the negative electrode in his
left hand and the positive in his right.
At this moment the operator turns on
current, of which the intensity is
gradually increased till it has obtained
the utmost limit that the patient can
support. The extractor is then put in
circuit and fastened on the tooth,
which, under the action of the vibra-
ton, is loosened at once. The opera
ton is performed quickly, and the pa
tent feels no other sensation than the
priclling produced in the hands and
forearms by the current.