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Features

The Making of Aeroplane History

Improved Rails by the Dry-Blast System

The Rebuilding of the Quebec Bridge

More Powerful Express Locomotives

Progress in the Gas-Driven Ship Problem

Doubtful Cases of Radioactivity

Future Speed of Cruisers

The Morehouse Comet Observed

A Few Facts about Fakes

By J.F. Springer

The Current Supplement

Reconstruction of the Baltimore & Ohio Bridge Over the Susquehanna River

By Day Allen Willey

The Collins System of Long-Distance Wireless Telephony

Public Service Car Fender and Wheel Guard Tests

IV.--The French Navy of To-Day

The “Flip-Flap”

By the English Correspondent of the Scientific American

Shaft Sinking by the Freezing Process

By Our English Correspondent.

Protecting Trains Under the East River

By G. W. Mac Murray

A Simple Package Tie

Ore Concentrator

An Improved Pipe Wrench

Patent Department

Shore Anchor

Attachment for Letter Boxes

Departments

  • Departments

    Correspondence

  • Recently Patented Inventions

  • New Books, Etc.

  • Notes and Queries

  • Index of Inventions

  • Patents

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Introducing Scientific American Health & Medicine

Introducing Scientific American Health & Medicine