IT may be safely said that no one of the wonder-working agencies of the nineteenth century, of an importance in any degree equal to that of the Electric Telegraph, is so little understood in its ...

IN the spring of 1860 an article was published in this magazine with the above title, giving an account of the extension of the telegraph up to that time. Its progress since has been very great in ...

IN the beginning of the present year a Society of Telegraph Engineers was established for the general advancement of electrical and telegraphic science, intended to include not only those persons who ...

THE reference in our Note was to the first commercial telegraph. The history of the invention of the telegraph is well known, but importance must be attached to inventions on the lines on which it ...

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Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...