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Scientific American Magazine Vol 101 Issue 4

Scientific American Magazine

Volume 101, Issue 4

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Features

Wire-Wound Versus Steel Guns

Magnitude of Work on New State Barge Canal

City Terminals Without Traffic Connection

Burglar-Proof Glass

Electricity

Science

Aeronautics

Some New Warships and Their Equipment

Percival A. Hislam

Some Experiments with an Orange

Gustave Michaud

Opening of the Down-Town Hudson Tunnels

The Third Honorable Mention Essay in the Fourth Dimension Competition

Charles Henry Smith

The Scientific Work of the Late Prof. Simon Newcomb

The Disinfection of School Books

Jacques Boyer

An American Farmobile

Frank C. Perkins

The Flight of the Curtiss Aeroplane for the Scientific American Trophy

Panning Without Water

Roland Ashford Phillips

Patent Department - July 24, 1909

Automatic Drain for Compressors

Portable Winch

Lock for Electric Meters

Expanding Brush for Cleansing Bottles

Apparatus for Purifying Water by the Injection of Ozone

Paper Hanger's Trimmer

Departments

Recently Patented Inventions - July 24, 1909

Index of Inventions - July 24, 1909

New Books, Etc. - July 24, 1909