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Alcohol from Wood Waste

Its Chemistry and Processes

By R. F. Ruttan

Modern Stage Illumination

The Passing of the old Footlight

By A. Neuburger

An Automatic Stamp Vending Machine

A New French Device

By Lucien Fournier

The Development of Power Systems

A Consideration of Prime Movers

By Charles Edward Lucke

Fast and Fugitive Dyes

Something about their Chemistry

By Otto N. Witt

Wooden Monuments of the Northwest Coast Indians

Curious Totems and their Meaning

By Harlan I. Smith

Jacquard Loom Improvement

The Purple of the Ancients

A Novel Reversing Gasoline Engine

Instantaneous Microphotography

Its Apparatus and Technique

The Transfer of Heat in Soils

An Instructive Investigation

By Harrison E. Patten

The Sexagesimal System and the Division of the Circle

By G. A. Miller

Halley's Comet.—II

By Far the Most Interesting of the Periodic Comets

By George F. Chambers

Science Notes

Trade Notes and Formulæ

The Psychology of Peoples

By R. S. Woodworth


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