TELEGRAPH (Gr. Tike, far, and rypaq5eiv, to write) , the name given to an apparatus for the transmission of intelligence to a distance . Etymologically the word implies that the messages are written, but its earliest use was of appliances that depended on visual signals, such as thesemaphore or
See also:optical telegraph of
See also:Chappe . The word is still some-times employed in this sense, as of the
See also:ship's telegraph, by means of which orders are mechanically transmitted from the navigating
See also:bridge to the engine
See also:room, but when used without qualification it usually denotes telegraphic apparatus worked by
See also:electricity, whether the signals that
See also:express the words of the
See also:message are visual, auditory or written .
See also:Land and Submarine Telegraphy will be considered in
See also:Part I., with a section on the commercial aspects . In Part II . Wireless Telegraphy is dealt with .
TELEGONY (Gr. TT/Xe, far, and yovos, offspring)
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