Scientific and Mechanical objects, profusely illus- Write for a Price List,as advertised in SCIENTIFIC AMERICAN. Address trated with Engravings, are given in the Sciem= VOLUME XXXVI.—NEW SERIES. OWARD 8 CO., 222 Fifth Av, New York tific American Supplement for the year 1876. This work consists of… … tory, Zoology, Microscopy, Meteorology, Terrestrial ROCK DRILLING MACHINES - HARTFORD ‘Nhe Scientific American Supp]:ment,. Physics, Geography, Geology, Mineralogy, Astron- | omy. The whole ilustrated by over Two Thousand A weekly paper, uniform in size with the ScrENTIFIC | AMERICAN, but a…
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