Life And the Conditions of Survival, the Physical Basis of Ethics, Sociology And Religion;

Cosmic evolution as related to ethics, by L. G. Janes.--Solar energy, by A. E. Palmer.--The atmosphere and life, by R. G. Eccles.--Water, by R. W. Raymond.--Food as related to life and survival, by W. O. Atwater.--The origin of structural variations, by E. D. Cope.--Locomotion and its relation to survival, by M. L. Holbrook.--Labor as a factor in evolution, by D. A. Gorton.--Protective covering, by Mrs. L. Cheney-Ward.--Shelter, as related to the evolution of life, Z. S. Sampson.--Habit, by J. W