CONTENTS 



CHAPTER I 

 WHAT WE OWE TO DARWTN 



Biographical — Darwin's Books — The Naturalist's Problems — The 

 first Question : What is This ? — The second Question : How does 

 This work 1 — The third Question : Whence is This ?— The fourth 

 Question : How have Present-day Organisms come to be as they 

 are ? — Manifoldness of Darwin's Services — The Web of Life — The 

 Struggle for Existence — Variability of Living Creatures — Natural 

 Selection — Vindication of the Evolution Idea — The Evolution 

 Theory, a Modal Interpretation — Darwin's Argument — Comparison 

 of Evolution Formula and Gravitation Formula — The Descent and 

 the Ascent of Man — Liberation of Intelligence — Ideal of Scientific 

 Mood and Method — Characteristics of Scientific Mood : Passion and 

 Reverence for Facts — Scientific Caution — Clearness of Vision — 

 Sense of Interrelations — Darwin's Method of Working — Darwin on 

 his own Success — Darwin's Achievements — Co-operating Influences 

 — Particular Reasons for Darwin's Success i . . pp. 3-42 



CHAPTER n 



THE WEB OF LIFE 



Correlation of Organisms as well as Correlation of Organs — What 

 the Metaphor of " The Web of Life " suggests — Dependence of Living 

 Creatures upon their Surroundings — Nutritive Chains — Nexua 



