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 378
354 TRIUMPHS AND WONDERS OF THE XIXth CENTURY are raised, and the draw is then free to turn. The wedges are operated byhydraulic rams. Chicago Drainage Canal. — It will probably be a surprise to manypeople to learn that this drainage canal has a greater cross sectionthroughout the earth-work…
Progress · Inventions
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