“About five years ago, on my voyage home from Europe, the electrical experiment of Franklin, upon a wire some four miles in length, was casually recalled to my mind, in a conversation with one of the passengers, in which experiment it was ascertained that the electricity travelled through the whole circuit in a time not appreciable, but apparently instantaneous. _It immediately occurred to me, that if the presence of electricity could be made_ VISIBLE _in any desired part of this circuit, it would not be difficult to construct a_ SYSTEM OF SIGNS _by which intelligence could be instantaneously transmitted._ The thought, thus conceived, took strong hold of my mind, in the leisure which the voyage afforded, and I planned a system of signs and an apparatus to carry it into effect. I cast a species of type, which I had devised for this purpose, the first week after my arrival home; and although the rest of the machinery was planned, yet, from the pressure of unavailable duties, I was compelled to postpone my experiments, and was not able to test the whole plan until within a few weeks. The result has realized my most sanguine expectations.” The following letters were published in the Journal of Commerce, from the originals now in possession of Prof. Morse. _Letter of the Hon. W. C. Rives._ SENATE CHAMBER, _September 21st, 1837_. MY DEAR SIR,—I hope you will find in my multiplied and oppressive engagements here, an apology for not having sooner answered your inquiry on the subject of your Electro Magnetic Telegraph. I retain a distinct recollection of your having explained to me the conception of this ingenious invention, during our voyage from France to the United States in the year 1832, and that it was, more than once, the subject of conversation between us, in which I suggested difficulties which you met and solved with great promptitude and confidence. I beg leave to assure you, that it would give us all great pleasure to renew, in personal intercourse at home, the agreeable souvenirs of our acquaintance, and friendly relations abroad. I remain with great respect, Your most obd’t serv’t, W. C. RIVES. PROF. S. F. B. MORSE. _Letter of Capt. William W. Pell, of the packet ship Sully._ NEW YORK, _Sept. 27th, 1837_.