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Features

Long Life vs. The Scrap Heap

The Latest Atlantic Steamship

Excellent Progress on the New York Subway

The Return of Lieut. Peary

The First Map Bearing the Name of America

By A. Gehlen

Portable Engine Boiler Explosion

Most Powerful Express Locomotive in Great Britain

Temperature and Humidity Regulators

The War Automobile

By Day Allan Willey

The Rapid Transit Subway, New York

Town Making a Science

By Charles F. Holder

The Jaubert Method of Producing Oxygen Gas

Oddities in Inventions

Ventilated Hat

Combined Horn and Bell

Magnetically-Supported Train

Mop-Wringers

Gurgless Jug

Business and Personal Wants

Departments

  • Departments

    The Heavens in October, 1902

  • Correspondence - September 27, 1902

  • Legal Notes - September 27, 1902

  • Recently Patented Inventions - September 27, 1902

  • Index of Inventions - September 27, 1902

  • New Books, Etc. - September 27, 1902

  • Notes and Queries - September 27, 1902

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September 27, 1902

Beyond XX and XY

Biology. Identity. Equality.