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Italian Machine for Loading Coal Tenders, Wars, Ancient and Modern and more

Educating Invalid Soldiers

How War Cripples are taught to do without Hands and Feet

By Alfred Gradenwitz

Effect of the War on American Industries—II

Permanent Value to Manufacture on Our Soil with Our Native Raw Materials

By Edward Ewing Pratt

Mechanical Equipment of the Grand Central Post Office

It Meets the Necessary Requirements for Increased Speed and Economy

By Herbert T. Wade

Strategic Moves of the War-September 1st, 1915

By Matthew E. Hanna

An Instance of the Parabolic Reflector Reversed, Putting the Light under the Fender

By Leigh F. J. Zerbee

The Current Supplement, The Vitamines, and their Importance for the Maintenance of Health


  • Letters

    Correspondence - September 11, 1915

  • Departments

    Inventions New and Interesting - September 11, 1915

  • Recently Patented Inventions - September 11, 1915

  • Notes and Queries - September 11, 1915

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