Lead Pierced by Insects. The Law of Friction. The Cosmical Telephone. Jet Propulsion. not yet be made a success Although a backwoodsman and poorly qualified t American Inventions and Discoveries in Medicine Surgery and Practical Sanitation., scientific american, 1891-07-04

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Lead Pierced by Insects. The Law of Friction. The Cosmical Telephone. Jet Propulsion. not yet be made a success Although a backwoodsman and poorly qualified t American Inventions and Discoveries in Medicine Surgery and Practical Sanitation., scientific american, 1891-07-04

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