Report of the Committee on Science and t
Report of the Committee on Science and the Arts on Ainsworth's automatic safety-switch for railroads
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O.B. Colton; Thos. Shaw; Wm.D. Marks; Coleman Sellers Jr.
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Article
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1879
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Elsevier Science
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English
โ 545 KB
## HALI, OF THE FRAKKLIX ISSTWCTE, \ PHILADELPHIA, NOY. 29th, 1X7X. ) The Committee on Science and the Arts, constituted by the Franklin Institute. of the State of Pennsylvania, to whom WJH referred for examination A&worth's Automatic Safety-switch for Railroads, report that they have carefully ex