Semi-weekly standard. [volume] (Raleigh, N.C.) 1853-18??, 1858-08-21
[Fiusl s.l,ise 3 : Union. :.

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TIE sUBMARI pm PROPHECIES
veanswer thu s Ysakt HsraN ti,st !. il A.
lautie telegraph IL Qndonbted asful6i ntr.ef
pF4phecy, !" not of what ~ss sDen dimH ssght6sn
hutdred years ago on the island Of PAtmas, but BY
what was seen clearly fifteen years ago through the
lights Of science, recorded 1t that time BY Profes
cor Nurse. Yes, it is very clear that Professor
Anssewas prophet; and it is something that be il
firing TO realize the correctness of his inferences
from this law" which are now completely fulfilled
amidst the rejocings Of the American people. Sure
y Mr.. Morse is prophet. ....sze, ~. ~. .ii.ss
We publish the following letter written by Pro.
lessor Morse. just fifteen years ago yesterday, to
Hon. John G. Spencer, then Secretary of the Treas
uTy, on the subjec! of electro magnetic experiments
between this city and Baltimore. and expressly pre-
dieting the laying Of the submarine cable =:
New YoRK, August 10th 1843
SIR: 1 take this opportunity of communicating to
the honorable Secretary of the result of the expert
ments made on the 9Th inst with the prepared wire
in one continuous line of 160 miles. Professors
Renwck. Draper, Elet, and Schaeffer, with my as
sstans Professors Fisher and Gale were D, esent bv
invitations Professors Silliman, Henry, Torrey, and
DR.. Chito were also invited but were prevented by
official dnties from attending
In the letter to the honorable Secretary dated
March 10th, ls43, in which I propose my general
plan have this remark speaking of the wire after
it's insulating preparation should be completed
general result then be tried before the wire is
enclosed
The experiments alluded to were tried on Tues
day, and with perfect success I had prepared a
gavanic battery of 300 pairs in order to have ample
power at command, but to my great qualification,
found that 100 pairs were sufficient to produce ali
the effects desired through the whole distance of
100 miles. ,r
1t may be well to observe that the 100 miles of
wire to be divided into four lengths of 40 miles
each, forming fourfold cord from Washington to
Baltimore Two wires form a circuit; the electrci-
ty. therefore, in producing its effects at Washington
from Baltimore, passes from Baltimore to Washing
ton and back again to Baltimore, of course travel
ing 80 miles to produce its result One hundred
and sixty miles, therefore, gives me actual dis
lance of 80 miles, double the distance from Wash.
ington to Baltimore. The result, then, of my expe
riments on Tuesday is that battery of only 100
pairs at Washington will operate a telegraph on my
plan 80 miles distant with certainty, and without
requiring any intermediate station!
Some careful experiments on the decomposng
power at the various distances were made, from
which the law of propulsion has been deduced veri
flying the results of Ohm and those which I made
in the summer of 1842. and alluded to in my letter
to the Hon. g. G. Ferris and published in the House
report No. II of the last Congress.
The practical inference from this lao tele
graphic communication on the electro magnetic plea
naay aoith certainty be established across the AtLan
ttc OCEAN oUIFtTsy HS UtIS may nOU 8cen an
confident the time soiU come sohen this project soi
be realized.
The wire is now in its last process of preparation
for enclosing in the lead tube, which will be com
meneed on Tuesday, the 18th inst
have the honor to be, sir, with sincere respect
your most ob't. serv't.,
SAMUEL F. B. MORSE,
Superintendent of Electro Magnetic Telegraphic
To the Hon. JOHN c. SPENCER
Secretary of the Treasury of the u States