CONTENTS. 



Chapter XVIII. 



Appendix 



INSTINCT (continued). 



Cases of Special Difficulty with Regard to the 

 Foregoing Theory of the Origin and Develop- 

 ment of Instincts . . 



XIX. Reason 



XX. Animal Emotions, and Summaky of Intel- 

 lectual Facclties 



page 



273 

 318 



341 



353 



