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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 111

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 111
r thatfor this computation the best available instruments were the chronometersof a century ago, and that lunar observations were made with the ..Id-timesextant. 100 TRIUMPHS AND WONDERS OF THE XIXth CENTURY As applied to geodesy, astronomy has added a process of ascertaining geo-graphical latitude… … ZENITII TELESCOPE. Made for University of Pennsylvania by Warner & Swasey. nately to two stars that cross the meridian at a brief interval of time, the onenorth and the other south of the zenith. Difficulties that arise from refrac-tion are avoided, and the resulting latitude is quickly…

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