Calming the Waves with Oil. Substitutes for India Rubber and Gutta Percha. Artesian Wells on the New Jersey Coast. Siphonage of Traps by Capillary Attraction. Siemens Bessemer and the German Patent System. The Old Trade Guilds in Germany. Rusting of Iron and Steel. 4 A New Fire Tank., scientific american, 1884-04-19
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