Stellar Evolution
An Attempt to Correlate Two Outstanding Problems of Physics
Features
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
Two-Cycle Paraffin Oil Engine
The Action of Ultra-Violet Rays on SugarCane, Pineapple and Banana in Hawail
Sea Lions and the Fishery Industries
Saving our Cattle
Government Cattle and Meat Inspection Service
Iron as a Source of Color in Optical Glass
Refractory Materials and the Glass Industry
The Present Status of Nitrogen Fixation
The Several Processes Contrasted on the Basis of their Showing to Date
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
Scientific Signalling and Safety at Sea
Modern Efforts to Protect the Mariner from Fog and other Perils
