. Invaluable for all con Original and Only biiil«iei> of the and The Arnoux and Ilochhausen Electric Co. HAKiU8-C0KLlsS EiNHINE cerns employing night TCI RT/^DADU and Electrical Supplies. watchmen. Send for cir- C.UlZdnMr'ri Send for Catalogue. The Arnoni anfl Hocliliaiiseii Electric Co. culars to… … Particulars mailed Free. Working Models THE "Scientific American" is printed with CHAS. MACKINNON PEN CO., ENEU JOHNSON & CO.'S INK. Tenth and Lom^ And Experimental Machinery, Metal or Wood, m^e to 200 B roadway, IK* a r Fulton Nt.,>'. Y, bard Sts., Philadelphia, and 50 Gold St. New York. order by…
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