Volume 114, Issue 19
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Features
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
Building a Cave at the American Museum of Natural History
An Ice Mine that Freezes in Summer and Melts in Winter, The Frog as an Entertainer in Motion Pictures, and more
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