236 SCIENTIFIC AMERICAN. NEW INVENTIONS. Improved Mill. New Bank Lock. Townsend's Improvements. New Glass. Glass Con. Pitchfork Machine. Patent Tidal Wheel Company. An Improvement in the Electric Telegraph. FOREIGN CORRESPONDENCE. New Inclined Plane Propeller—Patent Fender—Elastic Metallic Piston &ie Patent Cab--Metallic SandValves and Air-conductors in Hats Sic. ar.c. The Rain Guage. The Missing Stars., 1847-04-17
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