Scientific American Magazine Vol 107 Issue 18

Scientific American Magazine

Volume 107, Issue 18

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Features

Our Panama Canal Number, A Coming Profession and more

Electricity and Spray Irrigation

How Water May be Raised by Electric Pumps to Produce Artificial Rain

Putnam A. Bates

Mortar Fire

A System for Attacking the Decks of Battleships

Charles A. Junken

New York State Education Building

J. A. Stewart

Aerodynamic Experiments of Due de Guiche

By the Paris Correspondent of the Scientific American

The Bushmen of Africa

Their Paintings and Etchings

W. E. Gardner

Compulsory Licenses, Legal Notes and more

T. Hart Anderson

Panama Exposition Postage Stamps, Notice

Departments

Correspondence - November 2, 1912

The Heavens in November 1912

Inventions New and Interesting - November 2, 1912

Recently Patented Inventions - November 2, 1912

Notes and Queries - November 2, 1912

New Books, Etc. - November 2, 1912