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Scientific American Magazine Vol 108 Issue 6

Scientific American Magazine

Volume 108, Issue 6

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Features

Col. Goethals on the Culebra Slides, State Versus Federal Control of the National Forests and more

New Types for the Japanese Navy, Dussaud's "Cold Light"

Oscar Parkes

Shall We Build Battle Cruisers?

Every Big-gun Cruiser Would Mean One Less Battleship in the Fighting Line

R. D. Gatewood

The Enlargement of the Aswan Dam

By the English Correspondent of the Scientific American

The Altamira Wall Paintings

Some Remarkable Specimens of Primitive Man's Art

Strap Hinges vs. T-Hinges

G. W. D.

Notched Lathe Dog, Straightening a Back Saw

William Grtzinger

Chair Making One Hundred Years Age, Lettering Triangle

Albert F. Bishop

Cutting Keyways With a Lathe, Making a Socket Wrench

H. D. Chapman

Sharpening Edge Tools

W. D. Graves

Automatic Fog Gun

E. O. Carter

Departments

Inventions New and Interesting - February 8, 1913

Recently Patented Inventions - February 8, 1913