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Features

Moving a Big Bridge, Anthrax Among Tannery Workers and more

A Proposed Highway Tunnel Beneath the Hudson River

Two 17-foot Roadways To Relieve the Congestion on the River Ferries

What the French Helmet will Stand

By Edward C. Crossman

Simple Methods of Determining Rifle Muzzle Velocities

By A. L. Hodges

Machine Guns by the Thousands

How a Gigantic Industry was Conceived, Planned and Realized in Less Than a Year's Time

By Austin C. Lescarboura

Morning and Evening Stars for 1917

By Frederic R. Honey

Model Prison to be Built in Illinois, When a Fly-Wheel Bursts and more

Security from Escape and from Disease no Longer to Be Regarded as Incompatible

By K. H. Hamilton

Departments

  • Letters

    Correspondence- January 13, 1917

  • Departments

    Inventions New and Interesting- January 13, 1917

  • Recently Patented Inventions- January 13, 1917

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January 13, 1917The splash of shells from naval big-gun fire. The water spouts are between 200 and 300 feet tall.

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