The world and man as science sees them / edited by Forest Ray Moulton.

Astronomy, by F. R. Moulton.
The origin and history of the earth, by R. T. Chamberlin.
Particles and waves, by H. B. Lemon and R. J. Stephenson.
Chemical processes, by H. J. Schlesinger and E. J. Rosenbaum.
The nature and origin of life, by H. H. Newman.
The problems of life and reproduction in the plant kingdom, by M. C. Coulter.
Evolution and behavior of the invertebrates, by W. C. Allee.
Vertebrates, by A. S. Romer.
Physiological processes, by A. J. Carlson.
Microorganisms and their roles in nature, by W. H. Taliaferro.
Man, by Fay-Cooper Cole.