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Features

Jeopardizing Trade Mark Property

The Sugar Industry in the United States

Obesity

The Latest Performance of the Turbinia

Pneumatic Tube Mail Service for New York City

An Efficient Steam Saver

Water Filtration

By Churchill Hungerford

Extension of the Underground Trolley System in New York

An Improved Railroad Crossing Signal

The Manufacture of Beet Sugar

Alfred Marshall Mayer

The Magic Table

The Micromotoscope

By D. F. St. Clair

To Inventors - July 31, 1897

Departments

  • Recommended

    New Books, Etc. - July 31, 1897

  • Departments

    The Heavens for August - July 31, 1897

  • Recently Patented Inventions - July 31, 1897

  • Business and Personal - July 31, 1897

  • Index of Inventions - July 31, 1897

  • Notes and Queries - July 31, 1897

  • Patents - July 31, 1897

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July 31, 1897

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