LIST OF ILLUSTRATIONS. 



Fig. Page 



1. Diagram of the muscles of the face, from Sir C. Bell 24 



2. " " " Henle 24 



3. " " " " 25 



4. Small dog watching a cat on a table 43 



5. Dog approaching another dog with hostile intentions 52 



6. Dog in a humble and affectionate frame of mind 53 



7. Half-bred Shepherd Dog 54 



8. Dog caressing his master 55 



9. Cat, savage, and prepared to fight 58 



10. Cat in an affectionate frame of mind 59 



11. Sound-producing quills from the tail of the Porcupine 93 



12. Hen driving away a dog from her chickens 98 



13. Swan driving away an intruder 99 



14. Head of snarling dog 117 



15. Cat terrified at a dog 125 



16. Cynopithecus niger, in a placid condition 135 



17. The same, when pleased by being caressed 135 



18. Chimpanzee disappointed and sulky 139 



19. Photograph of an insane woman 296 



20. Terror 299 



21. Horror and Agony 306 



Plate I. to face page 147. 

 " II. " 178. 



" III. " 200. 



" IV. » 248. 



Plate V. to face page 254. 

 « VI. " 264. 



« VII. " 300. 



N. B— Several of the figures in these seven Heliotype Plates have 

 been reproduced from photographs, instead of from the original nega- 

 tives; and they are in consequence somewhat indistinct. Nevertheless 

 they are faithful copies, and are much superior for my purpose to any 

 drawing, however carefully executed. 



vi 



