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Triumphs and wonders of the 19th century, a volume of original, historic and descriptive writings showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress (1901)

Boyd, James Penny, 1836-1910 · Philadelphia, A. J. Holman & co · leaf 38

An illustration from Triumphs and wonders of the 19th century, a volume of original, historic and descriptive writings showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress, 1901, leaf 38
rs fed by some generator ofelectricity. He devised a system ofsigns, which was afterwards improved into the Morse alphabet, consistingof dots or points, and spaces, to represent numerals. These were impressedupon a strip of ribbon or paper by a lever which held at one end a pen orpencil. The paper… … MORSE TELEGRAPH AND BATTERY. 28 TRIUMPHS AND WONDERS OF THE XIXth CENTURY

Progress · Inventions

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