(gP^5^ A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES. $3 per Annum Vol. XXV.—No. 4. j NEW YORK, JULY 22, 1871. [IN ADVANCE.] [NEW SEE1ES.] > in suitable seats. The course of admission and exhaust will The induction valve is worked by the rod, E, and…
Patents · Graphite · Iron · Cylinder · Scientific American · Water · Cotton wool · Baxter steam · Foot pounds · Patent office · Steam engine · Horse power · Mechanical equivalent · Ten times · Willow leaf
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