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Features

The Pennsylvania Railroad and the Steel Rail Problem

“The Navy” and Naval Criticism

Designers of the Brooklyn Bridge Terminal

Where the Reciprocating Engine Drove Out the Turbine

Lemoine and His Artificial Diamonds

When Was the First Pendulum Experiment Performed in this Country?

Asbestos Slates--A German Invention

Award of the Army Aeroplane Contracts

Extermination of Fruit Pests in California

The Current Supplement

Opening of the Hudson River Tunnel System

The Testing of a Locomotive

By Frederic Blount Warren

Closing a 700-Foot Break in the Mississippi Levees

By Paul J. Brand

Sending the Whalebacks Out to Sea

By L. E. Moss

The Efficiency of the Human Machine

By René Bache

Micrometer Attachment for Calipers and the Like

Safety Connection for Gas Stoves

An Improved Fish-Line Float

Shipping Can for Transporting Milk

Departments

  • Departments

    Correspondence

  • Recently Patented Inventions

  • New Books, Etc.

  • Notes and Queries

  • Index of Inventions

  • Patents

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