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Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .. (1899)

Boyd, James Penny, 1836-1910 · Philadelphia, Pa., A. J. Holman & Co · leaf 36

An illustration from Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress .., 1899, leaf 36
MAGNETIC FIELDS OF FORCE. III. THE TELEGRAPH. From the date of the discovery that electricity could be conducted to adistance, dreams were indulged that it could be made a means of communi- WONDERS OF ELECTRICITY 27 … DANIELL S CELLS. eating intelligence. In the eighteenth century, many attempts were made tocarry intelligent signals over electric wires. Some of these were quite ingen-ious, but in the end failures, because the old-fashioned frictional electricitywas the only kind then known and em-ployed. Even…

Progress · Inventions

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More pictures from Triumphs and wonders of the 19th century, the true mirror of a phenomenal era, a volume of original, entertaining and instructive historic and descriptive writings, showing the many and marvellous achievements which distinguish an hundred years of material, intellectual, social and moral progress ..

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