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Scientific American, Vol. 61, No. 16 (1889) (1889)
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as this installation are made of cast iron and others of N. W. Mechanic. not been directly determined, must have ‘been very sheet steel, the Jast being presumably the better mate- high. In practice, it is believed, and claimed by the rial for actual practice. The tube being 30 inches in… … © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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