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New Aviation Beacons that Make Safe the Landing of Aircraft at Night, Steel Cars on Railway in India, and more

By Robert G. Skerrett

The Problem of Gasoline Supply

Review of Present Conditions and a Forecast of the Future

Proposed Improvement of New York's Hudson River Front

Eliminating Railroad Operation at Street Grades

Strategic Moves of the War, April 28th, 1916

By Our Military Expert

An Ice Mine that Freezes in Summer and Melts in Winter, The Frog as an Entertainer in Motion Pictures, and more

By Charles Arthur Vandermuelen

Building a Cave at the American Museum of Natural History

By Walter I. Beasley

The Paper Situation

Factors That Are Responsible for the Present Stringency

By William Bond Wheelwright

How May the Permanent Success of Our Dye Industries be Secured?

By George H. Bruce

Our Nautical Schoolships

Conditions Show That We Are Far Behind Our Commercial Rivals Abroad

By F. S. McMurray

How Gun Pressures are Measured, Putting the American Paper Industry on a Scientific Basis, and more

By Geo. P. Jewell

War Game—VIII

The Effect of the Successful Double Envelopment

By Guido von Horvath

Cartridge Cases of Steel

Has Germany Found a Substitute for Drawn Brass?

By Edward C. Crossman

Blasting a Canal Through a River Bottom

Cutting Through the Rock Bed of the St. Claire Rapids

By O. R. Geyer

The New Quebec Bridge

Progress of Erection of the World' s Longest Cantilever Span

By A. Meyers


  • Departments

    Correspondence - May 6, 1916

  • Recently Patented Inventions - May 6, 1916

  • New Books, Etc. - May 6, 1916

  • Notes and Queries

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