INDEX TO MENTAL EVOLUTION IN ANIMALS. 



A. 



Abercrombie, Dr., a case of apoplexy described by, 36. 



Abstraction, 145, 152-3, 352. 



Actinia. See Anemone. 



^lian, on instincts of capon, 171. 



^stbetic emotions in animals, 341, 345. 



Affection in animals, 345. 



AlcipidcB, eyes of, 85-6. 



AJford, Lord, hounds of, 198, 241. 



Alison, Professor, on sense of modesty as instinctive, 193. 



AUen, Grrant, on sense of temperature, 97 ; on sense of colour, 100 ; on 

 Pleasures and Pains, 106-11 ; on sense of dependence shown by domesti- 

 cated dogs, 240. 



Amoeba, power of discrimination in, 55. 



Amphibia, senses of sight, hearing, smell, taste, and touch in, 90 ; memory 

 in, 124 ; grade of mental evolution of, 349-50. 



AmpMoxus, destitute of auditory organs, 90. 



Anatomy, relation of comparative, to comparative psychology, 5. 



Andrews, J. B., on homing faculty of a dog, 290. 



Anemone sea-, observation upon discrimination of, 48-9 ; sense of smell in, 

 83 ; mistaken by a bee for a flower, 168. 



Anger, in animals, 341, 345. 



Annelida, consciousness in, 77 ; special sensation of, 56, 86 j emotions of, 

 344 ; grade of mental evolution of, 344. 



Anthropoid apes. See Ape. 



Ants, brain of, 46 ; memory in, 146 ; individual variations of instincts of, 

 183 ; local variations of instincts of, 244-5 ; pets of, 185 ; receiving 

 secretion from aphides, 277-8; sense of direction in, 295; slave- 

 making instincts of, 317 ; grade of mental evolution of, 350. 



Ape, delusions of a sim-struck, 150 ; intelligence of an anthropoid, 328. 



Apes, anthropoid, using tools, 352 ; grade of mental evolution of, 352 



Aphides, yielding their secretion to ants, 277-8. 



Arachnida, special sensation in, 56. See Spider and Scorpion, 



Argyll, Duke of, on an eagle teaching a goose to eat flesh, 227 ; on origin of 

 instincts, 262 ; on instinct of feigning injury, 316. 



Articulata, special senses of, 56, 84-8 ; memory in, 123 ; imagination in, 

 145-6 ; instinct of in feigning death, 303, et seq. ; emotions of, 344 ; 

 grade of mental evolution of, 349. 



Association of Ideas. See Ideas. 



Ataxy, analogous to lunacy, 44. 



Audouin, on puppies learning to imitate cats, 223. 



2 B 



