Feature

Prof. Filippo Silvestri Polyembryony

First Glances at New Books

In Science Fields

Dr. Kiyoshi Shiga: Dysentery Unconquered

Prof. Eduard Norden: Roman Crop Insurance

System of Signs Ideal International Language

Harvard Conference Hears Scientists from Many Fields

Urges More Vigor in Studying Science of Man

Cyclops Was Not Greek; The Babylonians Knew Him

Susceptibility to Colds Is Tested by Use of Oxygen

Civilization to Blame for Serious Diseases

Prof. Arthur H. Compton: Electric Not Light