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Scientific American Magazine Vol 117 Issue 5

Scientific American Magazine

Volume 117, Issue 5

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Features

Photographs by Cable, North Sea Net--A Civil Engineer's Job, and more

Electricity- August 4, 1917

Automobile- August 4, 1917

Science- August 4, 1917

The Submarine Problem--X

The Gun as an Answer to the Submarine

Mechanics and Mathematics of the Draft

Outstanding Features of the Process through which 687, 000 Young Americans Will Be Called to the Colors

C. H. Claudy

The Earthquakes and Eruptions in San Salvador

Seismic Disturbances in Central American Republic from June 7th to July 4th

Herbert J. Spinden

When the Gasoline Cavalry Charges

With the French Tanks During a Typical Battle.

Specialization as an Aid to War-Time Industry in England

Use of X-Rays for Examining Reinforced Concrete, Utilization of Waters of Lowlands in Fisheries

A Ship with No Reciprocating Machinery, A Neutral Zone in the Campaign Against an Insect Pest, and more

Departments

Correspondence- August 4, 1917

The Heavens in August

Inventions New and Interesting- August 4, 1917

Recently Patented Inventions- August 4, 1917

New Books, Etc.- August 4, 1917

Notes and Queries- August 4, 1917