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

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

Building a Cave at the American Museum of Natural History

The Paper Situation

Factors That Are Responsible for the Present Stringency

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

Our Nautical Schoolships

Conditions Show That We Are Far Behind Our Commercial Rivals Abroad

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

War Game—VIII

The Effect of the Successful Double Envelopment

Cartridge Cases of Steel

Has Germany Found a Substitute for Drawn Brass?

Blasting a Canal Through a River Bottom

Cutting Through the Rock Bed of the St. Claire Rapids

The New Quebec Bridge

Progress of Erection of the World' s Longest Cantilever Span