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Steam Plowing by Direct Traction

The Measurement of Power

The Coming Pavement

Publishers' Notice

Letters from Commissioner Thurston

The Digestive Apparatus

Fish Culture by Farmers

The Recent Arctic Expedition

Mordants for Aniline Colors

The Mechanical Pigeon

The Common Beetle

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

Decisions of the Courts

The Southern Canal

Recent American and Foreign Patents

Answers to Correspondencts

Communications Received - July 12, 1873

Value of Patents and How to Obtain Them

Schedule of Patent Fees

To Investors - July 12, 1873

Scientific American - July 12, 1873


  • Departments

    Correspondence - July 12, 1873

  • New Books and Publications

  • Business and Personal - July 12, 1873

  • Notes and Queries - July 12, 1873

  • Index of Inventions - July 12, 1873

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