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The Life-Study of Patients

The Biographic and Multiple Biographic Method of Discovering Medical Truth

By George M. Gould

Influence of Radio-Active Earth on Plant Growth—II

Facts Indicated by Practical Experiments

By H. H. Rusby

Eugenics and War

What Everyone should know about Cancer

Suggestions for Avoiding this Very Prevalent Disease

By Joseph C. Bloodgood

Salving Sunken Submarines

Provision Made by Foreign Countries Anticipating Accidents

The use and Care of a Watch

A Record of Achievement—II

The Contribution of the Chemist to the Industrial Development of the United States

By Bernhard C. Hesse

The Liberty Bell and Diseases of Metals

How Re-Melting, Unscientific Methods and Mixtures Have Injured the Relic

The Lincoln Beachey Monoplane

Details of a Composite Design that Failed from Weakness

Gyrostats and their Lessons

Studies of Various Forms of Apparatus

Electric Cars in Belgium

On Color Sensitized Plates

Business of the Canal


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