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Hell Gate Improvement

Queer Cattle

The United States Commission on Boiler Explosions

The Uses of Nature

Expected Resignation of the Commissioner of Patents

Experimental Steam Boiler Explosions

Scientific and Practical Information - August 21, 1875

Constancy of the Ocean Level

The St. Louis Bridge

Joining up Cells of Batteries

Korting's Steam Jet Bilge Pump

Smith's Improved Bale Tie

The Electrostatic or Induction Coil

Practical Mechanism - August 21, 1875

By Joshua Rose

Improved Floor Clamp

Improved Sudden Grip Vise

New Reaping and Mowing Machinery

Recent American and Foreign Patents - August 21, 1875

The Chemical Fire-Fly

By C. W. Wright

Canadian Patents - August 21, 1875

Communications Received - August 21, 1875


  • Letters

    Correspondence - August 21, 1875

  • Departments

    Business and Personal - August 21, 1875

  • Notes and Queries - August 21, 1875

  • Index of Inventions - August 21, 1875

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