New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1843-01-19

A D
b Z
c. F.
All the letters of the alphabet with the numerals
are indicated by different combinations of these
simple marks.
In letter addressed TO the Committee, Prof
MORSE presents slight history Of his Invention
since it was rrst presented to Congress in 13 6.
An appropriation of $50, 900 was then unanimously
recommended for ii, but pressure of business
prevented any action upon it. Prof. MORSE then
took it to Europe. BY the various scientific socie
ties of Paris it was received with enthusiastic ia
yor, and especially by the Academy Of Science
TO which it was explained by the distinguished phi
losopher, M. ARAeo. An inquiry was instituted
BY the French Minister of the Interior into the
comparative merits of the different Telegraphs tina,
have been invented and this resulted in a report
giving the preference to that of Prof. Morse
Upon FIRST making the experiments connected with
his Telegraph, Prof. M feared that its utility
would be at once destroyed by the observed fact
that the magnetic power produced in an electro
magnet by single galvanic pair diminished RI.
pidly Subsequent experiments, however, upor
SO miles of wire convinced him thar "whle the
distance increased in an arithmetical ratio, ad-
diion TO the series of galvanc pairs Of plates in
creased the magnetic power in geometrica ra-
to-" The weight upheld by the magnet from the
magnetism produced By SO pairs gradually aimin-
ished up to 10 miles, after which the addition OF
wire up to 80 miles caused no farther visible dni
- -,
ing the system is thus relieved of ell scientific OBJ
jsc,ions.
The ielegraphic systems in the different coun-
tries of Europe are sustained at great expense,
and are of use at ali to the great body of the,
people. But Prof. Morse thinks that his system
when established may be made source OF
seeenee from the service will render to the whole
community. There can be no doubt, he thinks,
tina, when once the line is made it would be in
slant use; and the paramount convenience to COM
mercial agents and others of thus corresponding,
will authorize a rate of postage propcrtonate to
the distance. The operation of the telegraph in
this respect is thus illustrated. Suppose New
York merchant wishes to inform his New Orleans
correspondent of the receipt of letter of the 2lst
ton at 8 cents per pound and 900 bbls. pork at
cents, BY the ordinary mode this operation world
require many days; by the telegraph Ii might be
expressed as follows: Yrs Dec. 81, rec. Buy
IS bales c. at . and 800 pork at 81 Hero are
Sc signs which could be transmitted in three min
u'cs Suppose that ore cent per sign be charged
Tor the first 100 miles, increasing the charge at
the rate of half a cent each additional 100 miles;
The postage on the ebe7c would be s. SO for dis
lance OF 500 niies-a sum which every merchant
would trd 1t be for his interest to pay Suppose
The telegraph TO be in constant use for Is hours
0as OF the 81 its receipts between those two cities
alone would thus be over 81 goo daily, or more
than 100000 per annum. Two circuits would OF
course double the facilities and thus the income,
and TO add another circuit is only to add another
wire
There are two methods Of establishing the line
q Conductors. One is by erecting spars about 80
iees high and $50 feet apart, extending the con-
doctors along the tops. This would cost about
s1oo per mile, but, though the cheapest mode, is
SUBJECT 10 obvious disadvantages. The other
method is that of enclosing tie conductors in lead
20 tubes, analayi,g them feet deep in the earth
The expense Of this method for single mile is
thus estimated:
IRE prepared, per
sfe WIN sptderiBss
p.sery OF lie pipe and 25
ssssas Wire ihe 5
isesSsans and 6llng
h'ius down The 5
SssS
upon this calculation, the expense of establish
"a 'eiegraphic communications between New
r OK and Philadelphia would be as follows:
Pss or thirty nine miles, above. 81
T registers aMh machinery eco
Batteries OF SO pairs each. ................ 200
Se,rs % Ghe! Superintendent per 2.t0o
- ."e assistants OBSERVATION-DISCLOSURES. foSp
eai So, So
sas een'mittee conclude the report by an earn
,seo'amcnda,ion OF a bill to appropriate $50 600
y oe expended under the direction of the Post.
9enera in testing the utility Of the invention.