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Economy in Study

Observation and the Taking of Notes

By George Van N. Dearborn

Animals with Many Eyes

Varied and Curious Organs of Special Development

By Stanley C. Bailey

Engineering in the Navy

By W. L. R. Emmet

Superficial Deformation of Steel on Quenching

The Paper Textile Industry

Many Products in Which Paper May Be Substituted for Other Fibers

Large Naval and Coast Defense Guns

Their Process of Manufacture and Inspection

By G. H. Holden

Varieties of Electric Motors

Oiling on Earth Roads

Presenting Suggestions for Obtaining Best Results

By B. H. Piepmeier

Flower Color

The Care of the Feet

The Injuries Resulting from Improper Shoes

Type Setting in Japanese

Spectacled Soldiers

Detonation of Submarine Mines by Electricity

Making Compressed Hydrogen

Injuries Due to Radium

Reports of Typical Cases and Recommendations for Prevention

By Thomas Ordway

Ship Timber making on the Pacific Coast

Indian Music


  • Letters

    Correspondence - April 15, 1916

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