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Features

Pathology of Mental Disorders—I

Modern Aspects of Certain Problems

By Edwin Goodall

A Curious Property of Silenium

Electrical Engineering and Race Progress

Growing Hemp in America

Facts Relating to Its Culture, Qualities and Preparation

By Charles Richards Dodge

Gunshot Wounds in War

Atoms and Ions—III

A Comprehensive Discussion Especially as Related to Gases Continued from Scientific American Supplement No. 2053, Page 291, May 8, 1915

By J. J. Thomson

Dried Beer—Yeast as an Article of Food

The Submarine in Naval Warfare—II

Problems of Design, Construction, and Recent Tactical Developments Concluded from Scientific American Supplement No. 2053, Page 298, May 8, 1915

By R. H. M. Robinson

Commercial Glucose and its Uses

A Misunderstood Product, Necessary for Certain Food Staples

By George W. Rolfe

Luxembourg Bridge

Protecting Steam Boilers

An Exposition of Military Sanitation

Showing How the Sick and Wounded Are Cared for in This War

By Alfred Gradenwitz

Modern Theories of Gravitation

Salts Colored by Cathode Rays

Their Peculiar Characteristics, and an Endeavor to Explain the Phenomenon

By E. Goldstein

Mutation and Modification of Bacteria

A Knowledge Which is Important to the Recognition of Species and Kinds

By Ray Lankester

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    May 15, 1915

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