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Patent Steam Engine Governor, Road Making by Steam

On a “Piece of Chalk”.--A Lecture to Workingmen

The Best Modes of Testing the Power and Economy of Steam Engines

By Charles E. Emery

Testing the Power of Steam Engines

Hancock's Screw Propeller

The Natural and the Artificial

Editorial Summary

Speed of Railway Trains

Manufacturing, Mining, and Railroad Items

Recent American and Foreign Patents

New Publication

Answers to Correspondents

“Gold! Gold! Hard to Get and Heavy to Hold.”

Self Education

European Patents

Expansion of Ice

Caveats

Comparison and Relation the Only Criterion of Size

On a Probable Connection Between the Resistance of Ships and Their Mean Depth of Immersion

By W. J. Macquorn Rankine

New Mexico, Its Natural Wealth

Transportation of Cattle--Reid's Patent Cattle Wagons

Patents and Claims

Issued by the United States Patent Office

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November 11, 1868

Music's Mysterious Power

Music's Mysterious Power

Emotional. Cognitive. Therapeutic.