![Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877
A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures](http://www.ektab.com/ar/img/books/s3fs-public/book_cover/gutenberg/defaultCover_4.jpg?p=product&v=1785332180)
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Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures
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