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Scientific American Magazine Vol 85 Issue 25

Scientific American Magazine

Volume 85, Issue 25

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Features

Pennsylvania Railroad Terminal Station and Tunnel

An Interesting Automobile Damage Case

The International Kerosene Oil Motor

Safety Device for Engines and Condensers

Iron Making on the Pacific Coast

An Improved Hay Stacker and Builders' Derrick

Giant Sand Wheel for the Calumet and Hecla Mining Company

Measuring the Heat of the Stars

Mary Proctor

The Evolution of the Motor Cycle

Hrolf Wisby

Hypnosis in Frogs

A Rare Fish

C. F. Holder

Business and Personal Wants

Departments

Correspondence - December 21, 1901

Recently Patented Inventions - December 21, 1901

Index of Inventions - December 21, 1901

New Books, Etc - December 21, 1901

Notes and Queries - December 21, 1901