Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 608
, was igio.] NATURE AND SCIENCE FOR YOUNG FOLKS 463 invented about 1837, and in its earlier form con-sisted of a key, relay, and register, the messagebeing recorded in dots and dashes, denting apaper tape as it passed the register—the readingby sound not coming into general use until about1855 to… … F1G. 4. AN OPERATOR RUNNING THE PERFORATED PAPERSTRIP THROUGH THE TELEPOST TRANSMITTER ANDSENDING THE WORDS AT THE RATE OF ONE THOUSANDA MINUTE. worker in the field of telegraphy, Mr. PatrickB. Delany. A new telegraph company, the Telepost, abouta year ago introduced this Delany rapid system,by…
Children's literature
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