ENGINEERING INVENTION. MECHANICAL INVENTIONS. AGRICULTURAL INVENTIONS. MISCELLANEOUS INVENTIONS. regulating the admission of heat to a room. BUILDING EDITION. JULY NUMBER. 801 Broadway New York. .Speciat. THE FOE OF QUACKS AND FRAUDS. An Editor with Plenty of Nerve wh Constantly Gets More by a New Method. a3usiness:5 anb Wersonat., scientific american, 1887-07-11
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