INDEX. 395 



Instinct, physiological aspect of, 52 ; as hereditary memory, 115-17, 131 ; 

 definition of, 159; involves a mental element, 160; perfection of, 

 160-7 ; in young birds and mammals, 161-5 ; in insects, 1G5-8, 179, 

 201-2, 203-9, 220-1, 277-81, 285-6, 290-5, 297, 303-8; of flying, 165; 

 imperfection of, 167-76; as affected by interruption of normal con- 

 verse with environment, 169-72, by castration, 171-2, by insanity, 

 173-4 ; trivial and useless, 176 ; origin and development of, 177-99 ; 

 primary, 180-92 ; secondary, 192-9 ; effects of crossing upon, 198-9 ; 

 blended origin or plasticity of, 200-218 ; of nidification, 210-12 ; of 

 incubation, 177, 212-13 ; maternal, 212-18 ; as moulded by imita- 

 tion, 219-25, by education, 226-9, and by domestication, 230-42 ; of 

 singing in birds, 222-3 ; of attacking rabbits in ferrets, 228 ; of drinking 

 in fowls, 229 ; local and specific varieties of, 243-55 ; not fossiHzed, 

 250, 254-5 ; evidence of transformation yielded by specific varieties 

 of, 250-5 ; views of other writers on evolution of, 256-72 ; general sum- 

 mary on and diagram of development of, 265-72 ; cases of special diffi- 

 culty in display of, 273-317 ; similar in unallied animals, 273-4 ; dis- 

 similar in allied animals, 274 ; trivial and useless, 274-6 ; apparently 

 detrimental, 276-85 ; alleged, of scorpion in committing suicide, 278 ; of 

 flying through flame, 278-80 ; of hen cackling, pheasant crowing, shrew- 

 mouse screaming, &c., 280-1 ; of migration injurious, 281-5 ; of lemming, 

 282-5 ; of migration, 285-97 ; of neuter insects, 265, 297-9 ; of sphex, 

 299-303; of feigning death, 303-16; of feigning injury, 316-17; in 

 relation to reason, 338-9. 



J. 



•Jackson, C. J., on instinct of the Californian woodpecker, 255. 



Jackson, Dr. J, Hughlings, on pre-perception, 139. 



Jealousy, 341, 345. 



Jeens, C. H., on a puppy learning to imitate a cat, 224. 



Jelly-fishes. See MeduscB. 



Jerdon, on birds dreaming, 149. 



Jesse, on changed instincts of a hen, 215 ; on snakes feigning death, 305. 



Kataplexy. See Hypnotism. 



Kidd, W., on diversity of disposition in larks and canaries, 182. 



Kingsley, Canon, on migration of birds, 296. 



Kirby, on modified instincts of larvae, 180. 



Kirby and Spence, on larvae remembering the taste of particular leaves, 115 ; 



on instmcts of insects, 166, 167, 179-80, 201, 204-8, 244, 245. 

 Kittens, instincts of, 164-5, 172. 

 Knight, Andrew, on hereditary transmission of acquired mental endowments 



in animals, 195, 197, 198, 237, 238 ; on intelligence of a bird, 201, and 



of bees, 208. 

 Knox, D. E., on a variation in nest-building of the golden eagle, 182. 

 Kries, on dilemma-time in perception, 134-5. 

 Kuszmaul, Professor, on infants preferring sweet tastes, 115. 



