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Improvement in Separating and Concentrating Ores, Grains, Etc.

Is Hydrogen Gas a Metal?

“Modern Engineering”—By the Hon. Wm. J. Mcalpine

Editorial Summary

Velocipede Notes

Webb's Patent Adder and Tally Board

Greene's Portable Engine, Union Check Valve, and Lubricator

“Waste” and “Economy” of Fuel

Examination of Applications for Patents—The Two Systems Compared

Land and Water—Are Earthquakes Land Makers?

The Wickedness of Waste.—Value of Bones

Hollow vs. Solid Shafting

Vegetable Oils Used in Painting

Importance of Accuracy in the Use of Mechanical and Scientific Terms

Bulletin of the National Association of Wool Manufacturers

Conserving of Fruit

Recent American and Foreign Patents

The Gard Brick Machine

Manufacturing, Mining, and Railroad Items

New Publications

Answers to Correspondents

Official List of Patents

Patent Offices

European Patents


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  • Business and Personal

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