Improved Churn. New New Method of Refining Gold. New Locomotive and Value or its Patent. IMPROVED 1. E Remington's Bridge. D New Oyster Opener. D Register Hygrometer. Water versus Steam Power. Stereolale Cloth. Wheeling Bridge. A Useful Machine Will Saltpetre Explode. New Tent, scientific american, 1850-07-20

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Improved Churn. New New Method of Refining Gold. New Locomotive and Value or its Patent. IMPROVED 1. E Remington's Bridge. D New Oyster Opener. D Register Hygrometer. Water versus Steam Power. Stereolale Cloth. Wheeling Bridge. A Useful Machine Will Saltpetre Explode. New Tent, scientific american, 1850-07-20

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