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Features

A Battleship that will Never Sail the Seven Seas, Electrolytic Iron for Commercial Use

Recruiting "battleship" built in Union Square Park, New York.

The Gun Accident on the Mongolia, Manning Our Merchant Marine, and more

Submarine Problem--II

Internal Construction and Operation of the German U-Boat

A Victim of U-Boat Pirates

Strategic Moves of the War--May 31st, 1917

By Our Military Expert

The Electric Arc in Wireless Telegraphy

How the Once Erratic Generator Has Been Developed Into a Most Successful Radio Transmitter

By Eugene Murphy

How to Make Ships Torpedo-Proof

Principle Employed Similar to that of the Gun Silencer
By Hudson Maxim

By Hudson Maxim

With the Soldiers Who Fight Underground, Speeding up the Flight of the American Seaplane

Mining and countermining on the Western Front
[The cover image of this issue is associated with the mining article]

Oklahoma Bureau of Standards

Departments

  • Letters

    Correspondence- June 9, 1917

  • Departments

    Inventions New and Interesting- June 9, 1917

  • Recently Patented Inventions- June 9, 1917

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June 09, 1917Underground warfare: French sappers using a stethoscope to detect mining operations of the enemy (see page 579). [Article on mining and countermining tactics in trench warfare]

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