The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1892-02-20
.LN rHE ELgO rRloAL WORLD.

llN TIE tAANNs Z i1lCFAA- NClN1Os
The use OF electric heallrhts fer
locomotives is increasing. BY $500
candle light objects may be seen mile
away on straight track.
A Californian has invented long
distance telephone OF very simp) con-
siruction with which he is confident he
can hold communication across the
continent or under the ocean.
--Intcresting experiments have been
made to demonstrate that the tides are
caused by electricity. A rubber comb
is electrified by rubbing it through the
hair. It is then drawn slowly over the
top of glass flied with water, caus-
ing tidal wave to follow.
II recall, said an electrical invent.
or, that about twenty years ago had
one of the largest electrical libraries in
the United states 1t consisted of five
volumes. In looking over the Elec-
trical Review book catalogue, the other
day, noticed the titles of nearly four
hundred electrical books. OF such is
the kingdom OF progress"
The New York Recorder says that
in New York city about ten thousand
subscribers are connected by twenty
five thousand miles OF wire, and they
use the telephone over a hundred thou
sand times n day. \ careful cnlcula-
tiou shows that during the year over
four hundred and fifty million conver-
sations were carried ON by telephone in
the United States
MIR. A. b. Holson, of Chicago, has
invented an apparatus by which runa-
way horses car be stopped by pressing
u button connected with battery,
which will give them IN electric shock.
1t wasrecently tried in Chicago on a pair
of spirited horses which were frightened
into running by a severe and uneXpcct-
ed blow with the whip. Although the
animals were going at n terrific speed,
they came to complete and immediate
standstill when the electricity was ap.
piled.
Mr.. Kelway, according to Indus
tries, has introduced an exceedingly
simple system of signaling ut night. A
board is provided with incnndescent
lamps arranged so that different sets
form different letters. II the letter n
is wanted, for instance, u key is pressed
which lights all the lamps which go to
form this letter, and so on. The ma
chine can bc worried Ike Il typewriter.
Signaling by this means corresponds
with the use of the black board in the
daytime, but is. of course, much more
rapid, aud ut the same time more easily
followed. it is, of course, incompar-
ably more rapid than any system OF
flash signalinr, ard is easy to read.
An English firm is introducing a
new form of portable light, which is
operated by a concealed storage bat
terry. This light is mounted on an Or
namental brass tripod and it is stated
that one charge OF the battery, con-
tanned in the stand or tripod, is suf.
fcient for running O. sixteen-candle
power lamp for ci%lt hours. The bat
terry is started by COMPRISING an india
rubber ball, the pressure Of the air ia
the acid chamber causing the fluid TO
rise in all the cells of the eerics When
not in use the liquid is pumped out OF
the reservoir by allowing the air to es.
cape.
Tho application o. electricity to
mining, says the Electrical Review, is
increasing very rapidly, and it is safe
to predict that it will become general
in the near future. Very frequently
mines are situated Lut short distances
from water powers, and the transmits
sion of current becomes very simple
matter The saving in cost OF opera.
tion over that where coal is used is
simply enormous. Many mines which
it has heretofore lcen impossible TO
work owing to the cost OF coal and its
transportation, are now, by applying
electricity for motive pJwer and other
purposes, operated, and at very salts.
factory profit. The increase in the
value OF these properties will add a
very considerable sum to the aggregate
wealth Of the country.