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The Sinking and Lining of Shafts

The Avoidance of Heavy Fixed Pumping Expense After Completion of Mines

By Francis Donaldson

Wooden Water-Pipes

An Unusual Case of Electrical Injury to Street Trees

Some Peculiar Cases Observed at New Haven, Conn.

By George A. Cromie

Sun-Power Plant

A Comparative Estimate of the Cost of Power from Coal and from Solar Radiation

Possible Economies in Shop Transportation

Reducing Time Lost Between Machine Operations

By Robert Thurston Kent

Action at a Distance, Roller and Ball Bearings, and more

The “Soo” Canal

The WorId's Busiest Locks

By Harry Chapin Plummer

Pressure Rises in Electrical Circuits and Apparatus

The Bursting of Flywheels

Baking Bread

The Influence of Bran-Extracts on the Baking Qualities of Flour

By H. L. White

The Ascent of Lava

The Propelling Force Due to Expanding Gases

By Frank A. Perret

The Sudden Origin of New Types—II

By Felix Oswald

Aluminium as Flux

By Robert Grimshaw


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