Improved Row-Lock for Boats. Machine for Greasing and Tarring Spun Yarn. A New Rind of Fence The Electro-Magnetic Locomotive. Blowing Great Glass Globes. Telegraph Snit. Scientific Convention at Cincinnati. Great Cavern Discovered In Vermont. The Electric Piano. New York Mechanics' Institute. A Chance for Inventors., scientific american, 1851-04-03

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Improved Row-Lock for Boats. Machine for Greasing and Tarring Spun Yarn. A New Rind of Fence The Electro-Magnetic Locomotive. Blowing Great Glass Globes. Telegraph Snit. Scientific Convention at Cincinnati. Great Cavern Discovered In Vermont. The Electric Piano. New York Mechanics' Institute. A Chance for Inventors., scientific american, 1851-04-03

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