iv CONTENTS 



LECTURE XIY. 



PAGE 



DIRECTIVE FACTORS IN EVOLUTION; SELECTION . . 439 



§ 1. Selection the Central Idea in Darwinism, 439 — § 2. Logi- 

 cal Objections to Darwinism, 440 — § 3. Sentimental Recoil 

 from Darwinism, 441 — § 4. Changes in Selection Theory since 

 Darwin's Day, 443 — § 5. Scientific Critique of Selection 

 Theory, 451— § 6. Subtlety of Selection Theory, 454— § 7. 

 Sexual Selection, 456— § 8. Selection, 466— § 9. Selectionist 

 Interpretations and the Argument from Design, 468. 



LECTURE XV. 



THE INDIVIDUAL AND THE RACE: HEREDITY . . .477 



§ 1. Definition of Heredity, Inheritance, Nurture, Develop- 

 ment, 478 — § 2. Heredity a Condition of Evolution, 480 — 

 § 3. Modifications and Heredity, 483 — § 4. The Organism as 

 a Historic Being, 484 — § 5. Nature and Nurture, 494 — § 6. 

 The Other Side of Heredity, 495— § 7. Heredity and Per- 

 sonality, 498. 



LECTURE XVI. 



THE EVOLUTION OF MIND AND MIND IN EVOLUTION . . 607 



§ L Of the Fact of the Evolution of Behaviour There Is No 

 Doubt, 507 — § 2. Difficulty of Understanding the Process, 

 508 — § 3. Provisional Sketch of the Evolution of Behaviour, 

 510— § 4. The Efficiency of Mind in Everyday Life, 520— 

 § 6. The Evolutionary Efficiency of Mind, 525. 



LECTURE XVIL 



NATURE CROWNED IN MAN 545 



§ 1. Differentiation and Integration as Standards of Progress, 

 545— § 2. The Probable Phylogeny of Man, 546— § 3. Man's 

 Solidarity with the Primate Stock, 551 — § 4. Man's Unique 

 Position, 552 — § 5. Factors in the Ascent of Man, 556 — § 6. 

 Human Evolution Contrasted with Animal E\'X3lution, 559 — 

 § 7. In What Sense May It Be Said that Nature Is Crowned 

 in Man?, 565. 



LECTURE XVIIL 



DISHARMONIES AND OTHER SHADOWS 573 



§ 1. Difficulties in the Way of a Religious Interpretation of 

 Animate Nature, 573 — § 2. Extinction of Highly Specialised 

 Types, 574 — § 3. Imperfect Adaptations, 575 — § 4. Disease, 

 576— §5. Parasitism, 578— § 6. Cruelty of Nature, 585— 

 § 7. Senescence and Death, 589 — § 8. Apparent Wastefulness, 

 594— § 9. A Balanced View, 596. 



