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Scientific American Supplement, No. 520, December 19, 1885
Various
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Buchanan's Journal of Man, December 1887
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Philosophical transactions, Vol. L. Part I. For the year 1757.
Various and Royal Society
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Scientific American Supplement, No. 795, March 28, 1891
Various
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Lippincott's Magazine of Popular Literature and Science, Volume 15, No. 85, January, 1875
Various
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Buchanan's Journal of Man, April 1887
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Buchanan's Journal of Man, August 1887
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Scientific American Supplement No. 822, October 3, 1891
Various
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Appletons' Popular Science Monthly, April 1899
Various
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Scientific American, Volume 22, No. 1, January 1, 1870
Various
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Scientific American Supplement No. 819, September 12, 1891
Various
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Scientific American Supplement, No. 1082, September 26, 1896
Various
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Scientific American Supplement, No. 286, June 25, 1881
Various
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The Popular Science Monthly, August, 1900
Various
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Scientific American, Volume 17, No. 26 December 28, 1867
Various
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Scientific American Supplement, No. 392, July 7, 1883
Various
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Scientific American Supplement, No. 530, February 27, 1886
Various
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Scientific American Supplement, No. 460, October 25, 1884
Various
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Scientific American Supplement, No. 483, April 4, 1885
Various
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Scientific American Supplement, No. 488, May 9, 1885
Various
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Lippincott's Magazine of Popular Literature and Science, Volume 26, July 1880.
Various
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Scientific American Supplement, No. 508, September 26, 1885
Various
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Scientific American Supplement, No. 799, April 25, 1891
Various
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Appletons' Popular Science Monthly, December 1898
Various
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Buchanan's Journal of Man, July 1887
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