The Lambertville record. [volume] (Lambertville, N.J.) 1872-1968, 1877-02-21
TEE TEE EPHoNE.
TESTING THE NEW INvENTIoN--soME WON
DERFuL EXPERIMENTS, FRO.

ett@ AA5 Nf
The Boston Transcript Of Feb. 4 says -
At noon, yesterday, distinguished party
Of gentlemen were assembled AZ the once Of
i the Boston Rubber Shoe Company, on Con-
gress street, In order to witness series Of ex-
periments performed on the telephone between
the inventor, Professor a. Graham Bell, here.
ard his associaiey Mr.. Thomas A. Watson at
the residence of Mr.. Converse, at Mlden
about six miles distant. est
The telephone, in its present form. consists
Of u powerful, compound, permanent magnet,
to the poles of which are attached ordinary
8 telegraph coils Of insulated wire. In front of
the poles, surrounded by these coils Of wire,
is placed diaphragm Of iron. mouih-piece
to converge the sound upon this diaphragm
substantially completes the arrangement. As
is well known, the motion of steel or iron in
front of the poles of magnet creates cur
rent of electricity in: coils surrounding the
5 poles of the magnet, and the duration of this
current of electricity comedies with the iura-
! tion Of the motion of the steel %. .sou moved
or yibratcd in the proximity of the magnet
!, When the human voice causes the diaphragm
to vibrate, electrical undulations are induced
4 in the coils environing the magnets precisely
analogous to the undnlations of the air pro-
dnced by that voice. These coils are connect
ed with the line wire, which may be of any
length, provided the Insulation be good. The
fluctuations which are induced In these coils
travel through the line wire, and, passing
through the coils Of an instrument Of precise
! ly similar construction at the distant station,
are again resolved into air undnlations by the
diaphragm of this Instrument. as fgHt9 :
i The simplicity Of Professor Bells system
| win be at once apparent when it is known that
the votaic battery is entirely dispensed with.
All that is required for communicating be-
tween the most distinct points are the instru-
nients and the telegraph wire, the latter taxi
ling the. place of the speaking tube and the
former that Of the mouth pieces. The short
distance which separated Messrs. Bell and
Watson in their experiments yesterday must
by no means be considered guage of the
tpowels of the Instrument, as any effect pro-
duced by electricity over short wire can
II with equal facility be produced over one sex-
4 tending Que hundred, or, for that matter, one
& thousaid miles, provided, Of course, that the
Insulation be good, In fact, the inventors
lihaye already conversed through an artificial
resistance far exceeding that OF any Of the
4 Atlantic cables Although to the uninitiated
5 this might seem TO imply that conversation
could be carried ON across the Atanticby this
means, yet rs all electricians and men of sci
all
teripg into the consideration Of such prob
q len, besides that of mere resistance As a proof
of the rapid progress made In this science IL
may be stated that it is only within the past
/ few months that the instrument has been suf-
ficiently perfected to allow Of free and easy
conversation taking place through this new
vehicle. iilsi1saaet
The experiments yesterday were as follows i:
Telephones having been connected with the
private telegraph line OF the Boston Rubber
Shoe Company, and the operators at either
end having taken up their station, conyersa-
ton was at once commenced. Stationed al
the Boston end of the wire, Professor Belll
requested Mr.. Watson to speak in loud tones,
wilma view OF enabling tho entire company
at once to distinguish the sounds.
This was SO successful that smile OF min
gled pleasure and surprise played on the fea-
lures of those present. That it, however,
might not be supposed that loud speaking
was essential to intelligiblity, Mr.. Bell ex-
| planned that soft tones could be heard across
tho wires even more distinctly than loud ut
/ terances, even whisper being audible III
confirmation of this statement, Mr.. Watson
commenced speaking in turn with each mem-
her of the company, and after the efficiency Of
this method had heen proved To the satisfac-
iion of ALL he took up n newspaper and in
formed the assemblage that gold had closed
the previous evening ut New York at 1853 =
As there were quite number OF business
men present. the effect that this practical
demonstration Of the value Of the telephone
produced can scarcely be exaggerated. Other
passages from the daily journals were then
given, and by this time the desire for CONVEX
sation having become general, Mr. Watson
/, was piled vita questions such rs, Is it thaw
ing or freeziugat Mslden2 Who will be TIN
next President etc, etc. It WAS remarke,
that Mr.. Watson was able to distinguish be
, tween the voic at Ii b ;ton end, he calm,
at least one gentleman by name as soon as tL
, latter commenced speaking.
!, At length the company were requested Il
/ remain quiet while a lady at the osher EN-
s ,nveyed to them the sweet strains of music
D The assemblsge thereupon listened with rap
! attention while young lady commenced sing
~, q The ast Rose of Sntnoer >, The offac