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Steam Plowing by Direct Traction

Letters from Commissioner Thurston

The Measurement of Power

The Digestive Apparatus

The Coming Pavement

Publishers' Notice

Fish Culture by Farmers

The Recent Arctic Expedition

Mordants for Aniline Colors

The Common Beetle

The Mechanical Pigeon

Notes From the Vienna Exposition

The Great Exposition-Letter from United States Commissioner Professor R. H. Thurston

Successful Laying of the Fifth Atlantic Cable

Improved Portable Dumping Car

The Tanite Company's Emery Grinder “E”.

Composite Ship Construction

A New Thermo-Electric Battery

The Southern Canal

Recent American and Foreign Patents

Decisions of the Courts

Answers to Correspondencts

Communications Received - July 12, 1873

Value of Patents and How to Obtain Them

To Investors - July 12, 1873

Schedule of Patent Fees

Scientific American - July 12, 1873


  • Departments

    Correspondence - July 12, 1873

  • New Books and Publications

  • Notes and Queries - July 12, 1873

  • Business and Personal - July 12, 1873

  • Index of Inventions - July 12, 1873

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July 12, 1873