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A History of Wireless Telegraphy (2nd edition, revised), J. J. Fahie, 1901, pages 65-66:

J. H. MOWER--1868.

    Of the next proposal with which we have to deal in these pages, I find amongst my notes only a single cutting from the New York 'Round Table' of (August or September) 1868. I give it, in extenso, for what it is worth, and hope some American reader may he able to furnish details and further developments if any:--
    "Mr Mower has elaborated a discovery which, if the description given by the 'New York Herald' is to be relied upon, will revolutionise trans-oceanic, and generally all subaqueous, telegraphy. For some years he had been engrossed in electrical experiments, when the Atlantic cable gave a special direction to his investigations into generating and conducting substances, the decomposition of water, the development of the electrical machine, &c., &c. By this summer his arrangements had been so far perfected that, a few weeks ago, he was able to demonstrate to himself and his coadjutor the feasibility of his project, on a scale approximate to that which it is designed to assume.
    "Selecting the greatest clear distance on an east and west line in Lake Ontario--from a point near Toronto, Canada West, to one on the coast of Oswego County, New York--at his first attempt he succeeded in transmitting his message, without a wire, from the submerged machine at one end of the route to that at the other. The messages and replies were continued for two hours, the average time of transmission for the 138 miles being a little less than three-eighths of a second.
    "The upshot of the discovery--on what principle Mr Mower is not yet prepared to disclose--is, that electric currents can be transmitted through water, salt or fresh, without deviation vertically, or from the parallel of latitude. The difficulty from the unequal level of the tidal waves in the two hemispheres will be obviated, it is claimed, by submerging the apparatus at sufficient depth. The inventor, we are told, is preparing to go to Europe to secure there the patent rights for which the caveats have been filed here. At the inconsiderable cost of 10,000 dollars he expects within three months to establish telegraphic communication between Montauk Point, the eastern extremity of Long Island, and Spain, the eastern end of the line striking the coast of Portugal at a point near Oporto.
    "The statement of the discovery is enough to take away one's breath; but, with the history of the telegraph before us, we no more venture to deny than we do to affirm its possibility."
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