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The Salton Sea, Commercial Science in a Canadian University

The "Multi-Tubular" Submarine

Theoretical design for a 1,200-ton submarine.

By Edwin Cerio

Sea-Raider Versus Submarine, Saving the Heat Lost in Internal Combustion Motors, and more

The Hudson Bay Railroad

How Canada Will Eliminate the Railroad Haul Across Half the Continent

By Earle William Gage

Strategic Moves of the War--April 19th, 1917

By Our Military Expert

Britain's Bid for the Control of the Air

Training the British Airmen for Army and Naval Service

By Lieut. G. L. Faulkner

Our Mobilization of Food

How We Are Going To Feed Ourselves and Our Allies

Why the Allied Powers Have Control of the Air

Departments

  • Letters

    Correspondence- April 28, 1917

  • Departments

    Inventions New and Interesting- April 28, 1917

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April 28, 1917The airman's lighthouse illuminating a safe landing place (see page 423)

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