SA Supplements Vol 87 Issue 2264supp

SA Supplements

Volume 87, Issue 2264supp

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Features

Stellar Evolution

An Attempt to Correlate Two Outstanding Problems of Physics

William Duncan MacMillan

A Miniature from the Past

Dwellers in Arizona Today Who Appear to be Left-Overs from the Stone Age

Industrial Substitutes in Germany

The Significance of Dreams

The Freudian Theory of Psycho-Analysis Illustrated

Eugenio Rignano

The Action of Ultra-Violet Rays on SugarCane, Pineapple and Banana in Hawail

T. Tsuji

Two-Cycle Paraffin Oil Engine

Saving our Cattle

Government Cattle and Meat Inspection Service

Sea Lions and the Fishery Industries

C. H. Townsend

Refractory Materials and the Glass Industry

Iron as a Source of Color in Optical Glass

The Present Status of Nitrogen Fixation

The Several Processes Contrasted on the Basis of their Showing to Date

Alfred H. White

Rapid Estimation of Lead in Brass and Alloys

The Anthropology of Poland

The Metallurgy of Copper

A Few of the Fundamentals Connected with its Production and Use

Thomas H. A. Eastdick

Scientific Signalling and Safety at Sea

Modern Efforts to Protect the Mariner from Fog and other Perils