Scientific American Magazine Vol 145 Issue 2

Scientific American Magazine

Volume 145, Issue 2

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Features

Time and the Railroad Dispatcher

Francis X. Milholland

Carl Akeley's Africa

Which Shall Inherit the Earth--Man or the Insects?

L. O. Howard

A $35,000,000 Business Home

Worlds From a Catastrophe

Henry Norris Russell

Hydro-Electric Power in the Ozarks

A. J. Seaburg

To Stop Soil Erosion Losses

Meeting the Emergencies of a Great City

Albert A. Hopkins

The Big Noise Behind the 'Mike'

The Earth Beneath

Ernest A. Hodgson

Staying the Hand of Time

Milton Wright

And Now, It's Seaweed

Kelp from the Pacific Coast May Supply Elements Which Are Now Lacking in Our Diet

Helen R. Crane, Emory W. Thurston

Progress and the Telephone

F. D. McHugh

A Book-Print Reader for the Blind

Robert E. Naumburg

Blasting Roads to Settle Them

Asquith and Kitchener

A Biographical Study of Two Eminent Englishmen

W. D. Puleston

Departments

Across the Editor's Desk, August 1931

Back of Frontispiece, August 1931

Correct Time is Essential to Safe Railroading

Our Point of View, August 1931

Marine Electrolysis Eliminator, Pointers on Nail Points and more

Langmuir Patent Invalid, Chemical Patents and more

Books Selected by the Editors, August 1931