V 



CONTENTS 



FOREWORD by J. Ives Townsend 



ON THE ORIGIN OF LIFE 



by Norman G. Anderson / 



DARWINISM AND MODERN GENETICS 



by C. H. Waddington 17 



THE DYNAMICS OF EVOLUTIONARY CHANGE 



by G. Ledyard Stebbins 39 



HUMAN EVOLUTION by J. N. Spuhler 



65 



EVOLUTIONISM AND MANS HOPE 



bv Theodosius Dobzhansky 97 



