SA Supplements Vol 74 Issue 1923supp

SA Supplements

Volume 74, Issue 1923supp

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Features

Modern Means of Investigating Mental Processes

A New Diagnosis for Hidden Mental Taint

William J. M. A. Maloney

Our Commerce and its Regulation

F. I. Kent

The Panama-Pacific International Exposition

A World Congress

Belgian Gun-mountings of New Design

The Use of Reactance in Transformers

Variable Ratio of Transformation Secured Without Separate Coil

W. S. Moody

Modern White Pigments

Their Manufacture and Properties

C. A. Klein

The Physical Testing of Rock for Road Building—I

The Methods Used and the Results Obtained

Albert T. Goldbeck, Frank H. Jackson

American Research Work on Rails

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

Arthur Keith

Asphaltum Mining in California

E A Ward

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