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A Curious Little Monorail Road in Ireland, Living Bean Poles and more

Something Different in Salvaging Operations

Relieving a Wreck of its Cargo with the Aid of Injections of Compressed Air

By Robert G. Skerrett

A Giant Ingot-Mold Casting in the Making

By A. R. Surface

A New Magnesium Alloy for Motor Pistons

By George Gaulois

Aircraft of the Future

A Statement of What Remains to be Done, and the Directions in Which the Doing Seems to Lie

By C. H. Claudy

The Five States of Matter

Two Fundamental Conditions That Must Be Recognized, Besides the Solid, Liquid and Gaseous

Our Coal in the Making

America's Peat Bogs and Their Utilization for Fuel

By Harry A. Mount

Taming the River Nile

Construction of Dams and a 225-Mile Canal to Double the Irrigated Area in Egypt

By H. C. Hardy

How Meadow Mice Destroy Trees

By William A. Murrill

Keeping Tabs on Bird Peculiarities

By George H. Dacy


  • Departments


  • The Service of the Chemist

  • The Motor-Driven Commercial Vehicle

  • Recently Patented Inventions

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