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Modern Means of Investigating Mental Processes

A New Diagnosis for Hidden Mental Taint

By William J. M. A. Maloney

Our Commerce and its Regulation

By F. I. Kent

Belgian Gun-mountings of New Design

The Panama-Pacific International Exposition

A World Congress

The Use of Reactance in Transformers

Variable Ratio of Transformation Secured Without Separate Coil

By W. S. Moody

Modern White Pigments

Their Manufacture and Properties

By C. A. Klein

The Physical Testing of Rock for Road Building—I

The Methods Used and the Results Obtained

By Albert T. Goldbeck and Frank H. Jackson

American Research Work on Rails

By M. H. Wickhorst

Superheated Steam in Locomotive Service

Investigations Conducted at the University of Illinois

Recent Discoveries of Ancient Man

The Neanderthal Type Probably Not the Ancestor of Modern Man

By Arthur Keith

Asphaltum Mining in California

By E A Ward

The Reclaiming of Waste Rubber, Securing the Ends of Elevator Cables, and more


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