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Features

Design and use of Scientific Instruments in Aeronautics

Correct Design Eliminates Unnecessary Strains

By Horace Darwin

The Crossing of Water by Ants

The Rome of Constantine

The Ancient Capital Reconstructed in a Model Thirty-six Feet Long and Twenty Feet Wide

Dead Ammonia

The Spirit of Invention

The Keynote of Our Modern Age

By F. W. Parker

Hydro-Electric Development in California

A General Survey of the Present Situation

By John A. Britton

The Principles of Fuel Oil Engines—III

The Chemical and Physical Basis of Their Operation

By C. F. Hirshfeld

Cold Storage Temperatures

Some Defects Inherent in Photographic Views

False Perspective of Photographs As Ordinarily Prepared

By A. Gleichen

Heredity and Microscopic Research

Structural Features Which Accord With the Laws of Mendelian Inheritance

By E. B. Wilson

The Physical Basis of Life

Laboratory Models of Living Organisms

Setting Diamonds

The Bacteria in Eggs

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    August 02, 1913

    Think Outside the Gift Box