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Novel Submarine Concrete Work

A Unique Pontoon Method of Concrete Construction

By Frank C. Perkins

The Increasing Size of Steamships

The Problems of Big Displacement

Northern Alaska

The Breton Rotary Explosion Motors

How Fish are Hatched.—IV

Fish-Cultural Practices in the United States Bureau of Fisheries

By John W. Titcomb

The Aeroplane in War

its Possibilities and Impossibilities

The Effect of Ultra-Violet Rays on the Eye

The Mechanics of Saving Life.—II

Safety Provisions in the United States Steel Corporation

By David S. Beyer


The Chemistry and Manufacture of a Remarkable Explosive


A Simple Explanation

By Adolf Mayer

Nature's Varnishes

Photography in Natural Colors

The Dufay Process of Color Photography

By G. Mareschal

The Effects of Fire on Building Material

Atmospheric Electricity

A Review of Recent Researches

By Charles E. Benham

Wireless Telegraphy and Telephony

A Review of Recent Progress

By H. Marchand

The Iron Ore Resources of the World

How Much Iron is there Still Left?

Engineering Notes

Science Notes

Electrical Notes


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