Contents

• Foreword, by H.F. Osborn.
• Introduction, by Sir C.S. Sherrington.
• Evolution
• its meaning, by D.S. Jordan.
• Why we must be evolutionists, by J.A. Thomson.
• Can we see evolution occurring? by H.S. Jennings.
• Vestigial organs, by G.H. Parker.
• Evolution as shown by the development of the individual organism, by E.W. MacBride.
• Embryology and evolution, by E.G. Conklin.
• The geographical distribution of animals, by W.B. Scott.
• The record of the rocks, by F.A. Bather.
• The nature of species, by J.W. Gregory.
• The progression of life on earth, by Sir A.S. Woodward.
• The evolution of plants, by C.S. Gager.
• The story told by fossil plants, by E.W. Berry.
• Butterflies and moths as evidence of evolution, by E.B. Poulton.
• Evolution of the bee and the beehive, by Sir A.E. Shipley.
• The evolution of ants, by W.M. Wheeler.
• The evolution of the horse and the elephant, by F.B. Loomis