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Features

Improved Portable Steam Brick Machine, Traction Engine

Stove Manufactories in Troy

Inventions and Patents Connected with Building

Mining in Colorado

A correspondent of the New York Evening Post, writing

The Comba Scura Bridge--Mont Cenis Railway

Society of Arts of the Massachusetts Institute of Technology

[Reported for the Scientific American.)

The Lowell Water Wheel Tests

The Beckwith Improved Sewing Machine

Beet Sugar in the United States

Science in the Courts

Drying Substances by Hot Air

Scientific and Practical Information

The Knowledge of Specific Heat Applied to the Determination of Very High Temperatures

The Amalgamation of Ores of the Precious Metals

American District Telegraph Company.—A New Enterprise

Psychic Force.—Spirit Faces

Recent American and Foreign Patents - March 9, 1972

Departments

  • From the Editor

    Answers to Correspondents - March 9, 1872

  • Letters

    Correspondence - March 9, 1872

  • Recommended

    New Books and Publications - March 9, 1872

  • Departments

    Notes and Queries - March 9, 1872

  • Business and Personal - March 9, 1872

  • Index of Inventions - March 9, 1872

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March 09, 1872

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