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Literary Genius and Manic-Depressive Insanity

With Special Reference to the Alleged Case of Dean Swift

By C. Jacobson

Use of Mirror in Watching Stack Smoke

Artificial Ebony from Oak Wood

War and the Survival of the Fittest—I

Does Physical Conflict between the Nations Select the Highest Type?

By Robert M. Dickie

Volcanic Vortex Rings

The Direct Conversion of Lava into Ash

By Frank I. Perret

Selective Reflection in Ultra-Violet Light

Some Curious Cases

By Gustave Michaud

Controlling the Mississippi River

Why the Levee System is Superior to All other Proposed Methods

By Col. C. McD. Townsend

The Elevator Action of the Rudder

Recent Development of the Locomotive

The Latest Stages in Its Evolution

By George R. Henderson

Spontaneous Heating of Stored Coal

Its Cause and Prevention

The Effect of Preliminary Heat Treatment upon the Drying of Clays

Charles Lathrop Pack

President of the National Conservation Congress

Rate of Multiplication of Organisms

Experimental Tugboats

The “Fulton” and the “Froude”

“Direct” versus “Continuous” Current

Forest Products of the United States

The Economic Value of our Trees

Ready-Made Houses

The Metals in Antiquity

Title Pages for the Scientifc American and Supplement


  • Letters

    Correspondence - January 4, 1913

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