5o6 



Index. 



Bidie, Mr. George, anecdote of 

 cat, 370 



Bket, M., "Psychic Life of 

 Micro-organisms," 360 



Birds, influence of food-yolk on 

 development of, 56 ; diver- 

 gence among, 97 ; breeding 

 area of comparatively re- 

 stricted, 101 ; humming, Duke 

 of Argyle on, 110 ; destruction 

 of eggs of, 189 ; game-, white 

 and black crossed, 225 ; taste 

 in, 251 ; smell in, 256; hearing 

 in, 264 ; sight in, 284 ; colour- 

 vision in, 285 ; gardener bower, 

 408 ; humming, nests of, 408 ; 

 perfect instincts of prcecoces, 

 424 ; love antics of satin 

 bower, 450 ; nests of, 453 ; 

 song of, 454 



Blochmaxx on the development 

 of the drone, 153 



Blood, circulation of, 22' 



Body as distinguished from re- 

 productive cells, 131 



Boll and Kchnf., Messrs., on 

 retinal purple, 27 6 



Bolton, Miss Caroline, on the 

 bat, 247 



Bombus muscorum, 90 ; lapi- 

 darius, 91 



Bombyx quercus, 258 



Bower bird, 408, 450 



Brain, 31 ; decreased, of rabbits 

 and ducks, 171 ; a microcosm, 

 491 



Beehm's, Thierleben, quotation 

 from, 405 



Brine shrimp, modified by sa^ 

 linity of water, 164 



Brooks, Prof. W. K., his modi- 

 fication of pangenpsis, 134 ; 

 on the greater variability of 

 the male, 237 



Browx, Prof. Crum, on sense of 

 acceleration, 270 



Browne, Sir J. Crichton, on 

 ducks, 171 



Budding, reproduction by, 42; 

 in relation to heredity, 123 



Bull, " Favourite," prepotent, 

 227 ; reversion in, 229 



Bc"ntax, John, ou gateways of 

 knowledge, 311 



Bctler, Mr. Samuel, on organic 

 memory, 62, 475 



Butterfly, protective resem- 

 blance in, 86 ; mimicry in, 87 



Camel, wounded, 392 



Canary, crested, 225 ; nest build- 

 ing of, 453 



Capon, taking to sitting, 228 



Capuchin monkey, Miss Ro- 

 manes's observation on, 367 ; 

 sympathy in, 397 



Carltle, quoted. 331, 335 



Carp at Potsdam, 265 



Carter, Dr. Brudenell, quoted, 

 285 



Caste, idea of, in dog, 400 



Cat, effect of African climate on, 

 164 ; defining its percept, 339 ; 

 communication, 345 ; intelli- 

 gence of, 370 ; and mouse, 

 399 ; punishing kitten, 405 



Caterpillars, protective resem- 

 blance in, 82 



Cattle of Falkland Islands, 203 



Causation, 327 



Cell, diagram of animal, 10 ; 

 controlled explosions in, 31 



Cessation of selection, effects of, 

 172 



Chcetodon, 83 



Chcetogaster limnai, reproduc- 

 tion of, 42 



Chaffinch, nest of New Zealand, 

 454 



Chamaeleon, 2S6 



Chance, 236 



Change of conditions, 163 



Characters, specific, 110 



Charbonxier, Mr. Henry, mea- 

 surements of bats, 63 



Chattock, Sir. A. P., his ex- 

 periments on colour-vision, 

 280; letter to, on dog and 

 picture, 341 



Cheshire, Mr., on smell-hollows 

 in bees, 259 



Chickens' aversion to protec f ed 

 caterpillars, 352; perfectly 

 instinctive activities, 424 



ChironoMUS, reproductive cells 

 of, 137 



Choice, 458 



Circulation of the blood, 22 



Classification, 323 



Clifford, W. K., on human 

 consciousness, 341 ; on the 

 eject, 476 ; on " world-.con- 

 sciousness," 479 



Clover and bees, 113 



(.'lytus arietis, 87 



Cockchafer, smell r hollows of, 

 259 



Cockeeell, Mr., on variations 

 in snails, 75 ; on effects of 

 moisture, 239 



Cockroach, diagram of trachea 

 or air-tubes of, 3 ; sense of 

 taste in, 253 ; sense of smell 

 in, 258 



Cocoon, collective, 429 



Colobus, 210 



Colour, protective resemblance 

 in, 82 ; warning of inedibility, 

 82; dependent on humidity, 

 164; direct action of climate 

 on, 164 ; development of, 202 ; 

 blindness, 273, 279 ; pheno- 

 mena of, 278 



Combination, organic, hypothesis 

 of, 150, 240 



Communication in dogs, 345 ; in 

 bees, 358 



Compensation of growth, 155 



Competition, elimination 



through, 89 



Concept, 325, 326 



Conception, 325 



Conceptual conduct and evolu- 

 tion, 488 



Condor, rate of increase of, 57 



Conduct, 463 ; influence of 

 thought and aesthetics on, 483 ; 

 conceptual, and natural selec- 

 tion, 488 



Congruity, principle of, 486 



Conjugation in protozoa, 39 ; of 

 ovum and sperm-cell, 42 



Consciousness, 32 ; and consenti- 

 euce, 326, 362 ; as a criterion 

 of instinct, 432 



Cunsentience, 326, 362 



Construct and construction 

 (mental), 312; three stages of, 

 324 ; inevitable nature of, 332 ; 

 in mammals, 338 



Continuity of reproductive cells, 

 131 ; germ - plasm, 138 ; cel- 

 lular, 142 ; in mental develop- 

 ment, 373 



Convergence, phenomena of, 117 



Co-ordinants, 303 



Cope, Prof., on the effects of use, 

 210 ; and Hyatt, Prof., on re- 

 tardation and acceleration, 221 



Correlated variation, 59, 216 



Corti, organ of. 263 



coryne, Prof. Weismann on, 139 



Cocch, Mr., on goldfinch song, 

 454 



Crab, protective resemblance in, 

 87 ; hermit, 195 ; habit of 

 decking itself, 457 



Crayfish, smell in, 259 ; auditory 

 organ of, 266 



Crossing, effect on reversion, 230 



Cruelty in cat, objective, 400 



Crustacea, eyes of, 292 



Ctenomys, 194 



Cuckoo, the nameonomatopoetic, 

 322 ; habits intelligent, 436 ; 

 ejecting young birds, 437 



Curiosity in prong-.horn, 339 



Cuttlefish, eyes of, 293 



Cyclas, 265 



Cycloptera speculata, locust re- 

 sembling leaf, 86 



Dallixger.Dt., his temperature- 

 experiments on monads, 147 



Danais, 203 



Daphnids, absence of fertiliza- 

 tion in reproduction of, 45 ; 

 colour - vision in, 292, 296; 

 leucocytes of, 439 



Darwix, Charles. Natural selec- 

 tion and the struggle for exist- 

 ence, 77; divides the principle 

 of selection into three kinds, 

 78 ; on selection of flowers and 

 fruits by insects, 93 ; on sexual 

 selection, 94 ; on prevention 

 of free crossing in breeding, 

 99 ; on differential fertility, 

 104; on London rats, 106; on 

 Galapagos archipelago, 109; 

 on diverse adaptation, 111 ; on 

 the influence of old maids on 

 clover crops, 113; on the in- 

 fluence of parent on offspring, 

 122 ; on the co-ordinating 

 power of her organization, 1 25 ; 

 hypothesis of pangenesis, 131 ; 

 on fnr of arctic animals, 165 ; 

 changes of structure attributed 

 to use and disease, 171 ; on 

 blindness of tuco-tuco, 194 ; 

 on the principle of economy, 

 194; on sexual selection, 198 ; 

 on preferential mating, 204; 

 on evolution of flowers, 205 ; 

 on co-ordinated variations in 

 the elk, 213 ; on acceleration, 

 222 ; on ancon sheep, 226 ; on 

 prepotency, 227 ; on reversion, 



229 ; on the effects of crossing, 



230 ; on fortuitous variation. 

 236 ; on the subordination of 

 the conditions to the organism, 



