PRESENT BATTLE-GROUNDS OF EVOLUTION. 115 



II. Sexual selection. Does the male grow strong 

 and brilliant of plumage because the female prefers 

 strength, brightness, activity, and song ? Or are these 

 qualities simply co-ordinated with the strength which 

 enables the favored male to overcome those less fav- 

 ored ? 



III. Origin of the fittest. Law of acceleration and 

 retardation. Effect of amphimixis. Unsolved prob- 

 lems. 



IV. Origin of man. 



1. Descent from anthropoid apes (form). 



2. Descent from Lemurs (teeth). 



3. Saltatory evolution. 



4. Extra-natural origin of human mind. Wallace. 



5. Man a nomadic ape. 



6. Knowledge of good and evil. 



7. Speech. 



8. Infancy. 



9. Tools and fire. 



10. Tribal relations. 



V. Origin of ethics. Inheritance of experience, or 

 natural selection, or education. Tribal ethics ex- 

 panded to general ethics. 



VI. Origin of the various groups of animals and 

 plants. An immense field of research, involving all 

 forms of biological knowledge. 



VII. Application of laws of Evolution to man. 

 1. Can we assist Evolution ? 



" When Nature falters, fain would Zeal 

 Grasp the felloes of her wheel, 

 And grasping, give the orb another whirl." 



