CONTENTS 



Preface 



page vii 



Chapter I. The Coming of the Darwinian Theory of 



Natural Selection 1 



II. Contacts with Darwinism (i). The Podo- 



stemaceae g 



III. Contacts with Darwinism (ii). Endemism, 



Age and Area 24 



IV. The Hollow Curve 33 

 V. Contacts with Darwinism (iii). Mutation 43 



VI. Contacts with Darwinism (iv). Adaptation 52 



VII. Isolation q\ 



VIII. Differentiation 65 



IX. Divergence of Variation 74 



X. Some Test Cases between the Rival Theories. 



A. Numerical gg 



XI. Some Test Cases between the Rival Theories. 



B. Morphological I03 



XII. Some Test Cases between the Rival Theories. 



C. Taxonomic 132 



XIII. Some Test Cases between the Rival Theories. 



D. Geographical Distribution 142 



XIV. General Discussion lg4 

 XV. Final Summary of Conclusions 191 



Appendices I94 



References to Literature 200 



Index 



203 



OJ622 



