The New York herald., 1850-06-07

ryw IMPROVEMENTS IN TIE TELEGRArH.
We were shown beautiful instrument, at the
Office of the New York and Erie Telegraph line,
invented by Colonel Speed, OF Detroit, which will
probably overcome the most serious obstacle in the
way Of telegrsphng, and must work an important
revolution in the business, where very important
POINTS TO be connected are widely separated as in
the United States. The obstacles in question arise
from the mpossibty Of getting perfect insulation
by which to intercept the passage Of the galvsnic
current from the wire to the ground. The best in
suated lines cannot work successfully more than
five or six hundred miles in ordinary good weather.
in one circuit and in rainy weather, this distance
must be divided once or twice, causing as many
interruptions in the transmission of a message.
Colonel Speeds instrument is designed to connect
those shortened circuits together and in fact, takes
the place ,ef seopyist and elegrspher at the con-
Meeting station thus transmitting the message from
one circuit to another. both ways, through the
longest line or any number OF circuits, without de-
lay OF repetition. BY means Of this invention,
messages can be transmitted from this city TO New
Orleans, or to St. Louis, with the same despatch
and correctness that they now are TO Boston,
Philadelphia, or Albany. The practical ability Of
the Improvement has been fully tested on the
Erie and Michigas line, where the instruments
have been working at Cleveland and Detroit,
and messages transmitted from Buffalo 20 Mil
waukie, through two instruments, or three cir
cuts, in the most satisfactory and perfect
manner. The practicability Of one circuit work
ing other both ways, has also been fully tested
on the New York and Erie line, where the process
has been in practice since July last, by means OF
simple and effective instrument invented by MI.
Cornell, and in use at Ithaca. The practical effect
of Comelfs instruments, appears to be the same as
that Of Spceds-the difference in s, that Speeds
works without the attention Of the operator at the
such attention the one may be termed dcpen-
dent, and the other an independent ccnnector. We
are happy 20 learn tina, Messrs. Cornell and Speed
have made arrangements TO introduce their i'm
provements on the New York and Erie, and Erie
and Michigan lines, and the branch lines connected
with them, and that AZ soon as n new wire can be
nut on the line which is to be devoted exclusively
10 through business, the vexstious delays that
now experienced in dcspatching messages from
New York to Chicago, Milwaukee, Cincinnati, and
St Louis, will be done away with, and our busi-
ness men may expect their answers as promptly AZ
they now get them from Boston, Washington or
Albany. We hope, ere long, TO see this improve
ment Introduced on all the long lines in the country.
orrrrc ANp HALIFAX TErxeRArH LINE.
frrom the New Brunswicker, April 20
We understand that great encouragement has
been held out TO the company that was organised
some tive years since, at Quebec, for building a
line between that city and Halifax and little doubt
is entertained but that the company will immedi-
ately proceed and accomplish that enterprise,
.bonldthe Legislature Of this Province grant them
free charter unframmelled as to the route TO be
chosen through New Brunswick, and as to where
the directors shall reside. We cannot doubt but
that the Hon.Mr. Wilmot, who, we understand,