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A Mining Camp without a Peer

Where Revolutionary Methods of Winning the Ore Have Been Developed

By George Frederic Stratton

Quinine in the Treatment of Gaseous Gangrene

With Notes on the Value of Quinine Hydrochloride as a General Antiseptic

By Kenneth Taylor

The uses of Intense Heat

And Some of Its Applications to Industrial Processes

Filtering Oil in the Power Plant

Methods Adopted Where High-Speed Machinery is Used

Natural History of the Whale Shark—II

Facts About a Monster Fish That Is Little Known

By E. W. Gudger

New Method of Making Sulphuric Acid

Destruction of Wasps

An Indiana Desert

A Curious Region of Constantly Changing Character

By Hu Maxwell

Aeroplane Engines

A Discussion of the Requisites and Details of Design

By Neil MacCoull


Nicotine from Waste Tobacco Leaves

A Printing Telegraph

An American Conception That Is Revolutionizing the Transmission of Information

X-Ray Examination of “Built-Up” Mica

By C. N. Moore

Crude Nitrogen in Natural Gases

Atoms, Molecules and Electrons

A Popular Exposition of an Abstruse Scientific Theory

By Norris W. Rakestraw

Stream-Valleys and their Meaning

Removal of Products of Combustion of Natural Gas from Rooms


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