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Features

Two Million More Horse Power from the Niagara River, The Senate War Disclosures, and more

By Robert G. Skerrett

Electricity- December 29, 1917

Naval and Military- December 29, 1917

Short Notes

Science- December 29, 1917

New Developments in Training Wartime Sailors

Scientific Vocational Work for Bluejackets Twelve Hundred Miles from the Ocean

By Willard Connely

Making Concrete Tell its Story, Steel Shells from Steel Castings, and more

By C. H. Claudy

Strategic Moves of the War, December 19th, 1917

By Our Military Expert

Theodore William Richards

The New President of the American Association for the Advancement of Science

Toyland in the Films

Where Dolls, as Movie Actors, Rival Living Stars

By Robert H. Moulton

Reducing Speeds Magnetically

A New Step-down Gear Adapted for Use on Turbine-driven Ships

British Army Free from Typhoid.

Departments

  • Letters

    Correspondence- December 29, 1917

  • Recommended

    New Books, Etc.- December 29, 1917

  • Departments

    The Heavens in January

  • Inventions New and Interesting- December 29, 1917

  • Index- December 29, 1917

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December 29, 1917Cover Image: A perilous parachute landing in windy weather (see page 498)
[the occupant of an observation balloon is forced to make a hasty exit with the aid of a parachute]
 

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