A New Theory About Comets. Car Coupling Dangers. Probable Cause of the Destruction of Boiler Tubes. —. A New Mode of Marine Propulsion. The Emerson Stone Saw. Much Butter from Little Milk. The Hours of Labor. Burning Bricks with Non-Explosive 0. Fletcher's New Low Temperature Burner and Foot Blower. The Proposed Great Telescope. Tie Detection of Blood Spots., scientific american, 1874-01-24

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A New Theory About Comets. Car Coupling Dangers. Probable Cause of the Destruction of Boiler Tubes. —. A New Mode of Marine Propulsion. The Emerson Stone Saw. Much Butter from Little Milk. The Hours of Labor. Burning Bricks with Non-Explosive 0. Fletcher's New Low Temperature Burner and Foot Blower. The Proposed Great Telescope. Tie Detection of Blood Spots., scientific american, 1874-01-24

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