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Scientific American Magazine Vol 99 Issue 7

Scientific American Magazine

Volume 99, Issue 7

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Features

The Zeppelin Airship Disaster

The Successful Defender of the International Motor Boat Cup

A Cruiser-Battleship Holds the Transatlantic Record

May a Manufacturer Buy a Patent, Never Use It, and Sue for Infringement?

Color-Blindness

J. F. Springer

Military Ballooning in Japan

The Current Supplement

A Municipal “Microbe Farm.”

Harold J. Shepstone

The Evolution of the Blow

Percy Collins

The Mechanical Joys of Coney Island

A No-Segment Graphite-Resistance Controller

The International Motor Boat Race for the Harmsworth Trophy

Departments

Correspondence

Notes and Queries

Recently Patented Inventions

New Books, Etc.

Index of Inventions

Patents