The Helena independent. [volume] (Helena, Mont.) 1875-1943, 1890-08-05

ASSOAA WVAA9
among others Edison, who. IL ID stated
by the Boston Transcript. has made oonald-
cradle progress in this direction. However,
il reports are to DO credited, the English
electricians have for once managed
to get in ahead Of him. Il IL announced
that at the postoface jubilee conversations
recently held in England, remarkable In
strum emit, the joint invention Of Prof.
Hughes, F. Il. g., and Mr.. w. Il. Preece, F.
inventors claim, solves the question Of visual
telegraphy. The new machine is used in
connection with the telephone, and, so the
English papers state, calls up the very fare
Of the person talking to you through the
telephone. Not only can you hear his voice,
but you may see the expression Of his face
pressed BY eyes and lips. From descrip-
ton We gather that novel apparatus was
placed in small cabinet. Before you on
the wall was funny-shaped disk, brightly
illumined by inoandescent lights. You
ring mp your correspondent and place the
diately his face is seen in the center
Of the disk. You speak and he replies,
and you sec his countenance change;
It il solemn, grave, gay or incredulous by
turns, according to the character OF your
talk. The features. % the papers state,
ZIG - O19blUCb ID 6UOOk0 0000 Vu0
object glass Of small telescope. Nothing
10 said e to the methods employed to bring
about this result, but the setenium process
BY which the late Robert Sabine and others
have succeeded in transmitting sunlight
pictures ID suggested % the basis from
which it may have been developed. It has
been claimed in sensational dispatches that
the whole exhibition was hoax, and that
the images we're produced by the clever
combination Of mirrors, a. has often been
done before, and not electricity, but it is
difficult to believe that men of science with
the standing Of Messrs. Hughes and Preeoe
would stoop 70 such vulgar proceeding.
Hogan, who attempted to navigate Camp
msnt recently made and herafded az . sue
oessful test will undoubtedly be taken with
e grain OF .alt: This machine is q gas bag
propellers are attached, the power to turn
them being furnished by electricity
from storage batteries. It was
claimed. and there were found
pol and steer his air-ship in any direction
he chose. And 80 he could but for one fatal
obstacle-the air currents. In q dead calm
small ship of this kind undoubtedly could
be moved in different directions at tho will
Of tho navigator; but how many more fail
uon oAu O4sdoteLb Wln ~ Jake TO Demon
strate to the satisfaction of fanatical bal
loonists and to the general public that
gas bubble can never be made, because of
purely physical reasons that can not be
overcome. to make any practical headway
against even the lightest wind. Campbelrs
faulty and dangerous device has already
cost one man his life,. to no purpose. for
the machine can never be perfected on these
lines, and can be but the slightest improve
ment on the ordinary balloon. The wind
will always make sport of q balloon of this
kind, for nothing can be devised that will
bility and lack of constant ascensional
force. sa.q.5s
The property Of selenium by which its
electrical resistance changes with the in
tensity of light, and which is the method
suggested as the one utilized in this conneo-
ton may be thus described: Selenium cells
nected with an electromagnetic in the re-
ceiver. The latter is composed of mirror
|constructed of thin strips of steel, to each
lot which several of the electromagnetic are
attached. When a strongly illuminated
body is placed in front of the transmitter
varies according to the intensity Of the
light. The various currents thus affect the
in different degrees, and
the strips Of steel are bent irregularly, turn
ing the mirror into series of slightly
warped surfaces, which will throw an image
on the screen. 1t is quite possible that this
warfare telescope Of indefinite length
Oould be constructed with buried wires aud
concealed visors, by which general could
Rpprise himself of the movements Of his
adversary with certainty and safety.
The following comparisons of cost of
appeared in the Revue Universelle DIES
Mines:
l. Comparative cost on ten horse-powe
transmitted 1888 yards: By cables, LIT per
enectlve horsepower per hour; by electric
~ "a. FL sss by hydraulics, by compressed
2. Comparative cost on fifty horsepower
transmitted 1893 yards: By cables, LBS per
enect!ve horse power per hour; by by
pressed air, 2.29.
s. Comparative cost ON ten effective
horse. power transmitted 5465 yards: By
Electricity, 2.A per effective horsepower
per hour; by compressed air, 4.66; BY ca
bles, 4.69; by hydraulics, 5.29.
4. Comparative cost on fifty effective
horse-pow transmitted 5465 yards: By
llectrioity, 2.37 per effective horse-power
ir, 2.99; by hydraulics, 800.
Paris has scheme for electric lighting
hat 10, according to report, novel. efficient,
afe and cheap. There are many companies
b Paris which furnish compressed air for
motive power, and one of these companies
bas bean awarded q contract for street
Fighting on an original system. Power dis
ributed through its compensatory system
urns large number Of small dynamos,
ach of which furnishes the current for
mall electric light circuit. The current
hus generated is safe, efficient and cheap.
Steam was the prime mover used In each
q the above instances. and it appears that
or long distances electricity takes the lead
economy over all other systems. Il has
lso great advantage in the facility with
hich the power may be subdivided, and
here appears to be no doubt that, in future
pal mining, electricity viii b much used
ur GOAL cutting, tunneiing, hauling, pump
ne htc., a. we'll ~ for lighting.
An electrician connected with the West
1Rnouee Electric company has been in
over, MIMI, experimenting with electric.
and iron ore with interesting results.
ie has, i il claimed, discovered . process
which he can center the rays OF an arc
ghs upon the iron ore and thereby soften
70 such degree a. to enable its being
lbor.
The ion-tamer nov uses electricity to
Anne the monarchs of the animal Kingdom,
nsteed Of the magic Of his ere, g hitherto.
v.1d ntted Nth an inseletsd grip il CON.
Gected 70 battery by . flexible vine and
e enock may b varied ct will