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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 48

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 48
y of the wireor armatures which cut the fields of force, and a corresponding increasein their number. Commutators and brushes underwent like improvement.So, at last, the well-nigh perfect and all-powerful dynamo of the end of thecentury was evolved, with a capacity for delivering, in the form of… … A DYNAMO. With the perfection of the dynamo, its uses multiplied. It became a primefactor in electric lighting. Trolley systems sprang up in city, town, andvillage, taking the place of horse and traction cars. In certain places, as in theBaltimore tunnel, the dynamo superseded the engine for…

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