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Features

Painting of Big Bridges

Rapid Construction of the Rapid Transit Subway

Important Application of Electric Power in Railroading

Annual Report of the Bureau of Ordnance

Science Notes

Tandem Compound Locomotive for the Northern Pacific Railway

Thirty Years' Growth of the Locomotive

A California Marine Railway

By Enos Brown

A Soap-Delivery Attachment for Water Pipes

How to Make a Simple Split Pulley

Progress of Construction of the Rapid Transit Tunnel

Waste-Heat Auxiliary Engine

The Electric Cable Span at Carquinez

Bee-Keeping in the United States

By Waldon Fawcett

The Leather Turtle

By M. C. Frederick

An Ingenious Writing Machine

Business and Personal Wants

Departments

  • Departments

    The Heavens in November

  • Correspondence - November 2, 1901

  • Notes and Queries - November 2, 1901

  • Recently Patented Inventions - November 2, 1901

  • Index of Inventions - November 2, 1901

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November 02, 1901

Beyond XX and XY

Biology. Identity. Equality.