CONTENTS 



CHAP. PAGE 



Introduction" vii 



I Evidences of Evolution from Explorer and 



Paleontologist 15 



II Evidences of Evolution from Anatomist, 



Embryologist and Physiologist .... 40 



III Great Steps in Evolution 67 



IV Variation and Heredity 112 



V Selection 143 



VI Organism, Function and Environment. . , 183 



VII Evolution Theories in their Social Origins 



AND Inter-Actions 212 



VIII The Evolution Process Once More Reinter- 

 preted 233 



Bibliography 249 



Q^biA 





i~'\>.^^ 1 



