spiders weighting their webs, 221.
On beetles:
co-operation of, 227-28

Buck, E. C., on intelligence of crocodiles, 263;
on collective instinct of wolves, 433;
on combined action of pelicans, 319

Buckland, F., on pigeon remembering voice of mistress, 266;
crows breaking shells by dropping them on stones, 283;
birds avoiding telegraph wires, 313

Buckley, on harvesting ants, 103

Buckton, G. B., on caterpillars, 236

Buffalo, 335-37

Buffon, on hexagonal form of bees' cells, 171-72;
association of ideas in parrot, 269;
sympathy in ditto, 275;
goat sucker removing eggs, 289

Bufo obstetricans, 254

Bull, intelligence of, 338

Burmeister, on powers of communication in ants, 49

Byron, Lord, lines on alleged tendency to scorpion to commit suicide, 222




Cairns, Mr. W., on reasoning power of a dog, 461

Campbell, Mrs. G. M. F., on intelligence of goose, 316

Canary, jealousy of, 276;
modification of incubating instinct in cage, 287;
flying against mirror, 311;
trained, 312

Canning, J., his dog knowing value of different coins, 452-3

Carassius auratus, 246

Carbonnier, M., on telescope-fish, 246

Carlisle, Bishop of, on congregation or court held by jackdaws, 324

Carpenter, Dr., on intelligence of rats, 361

Carreri, Gernelli, on monkeys thrusting stones between oyster-shells to keep them from closing, 481

Carter, H. J., on apparent intelligence of athealium, 19;
of actinophrys and amœba, 20-1

Carus, Professor, on spiders weighting their webs, 221

Cat, the, 411-25;
general remarks upon, 411-14;
emotions of, 412-13;
general intelligence of, 413-25;
showing zoological discrimination, 414;
punishing kittens for misbehaviour, 414;
begging for food, 414-15;
feeding kittens on bread when milk fails, 415;
carrying kittens to be protected by master, 415;
trying to catch image behind mirror, 416;
communicating by signs, 419;
devices for catching prey, 417-20;
appreciation of mechanical appliances, 420-25;
extinguishing fire by water, 425

Caterpillars, instinct of assisted by intelligence, 236-8;
migrating, 238-40

Catesby, on co-operation of beetles, 226, 227;
on frigate-pelican plundering boobies, 284

Cattle, fear exhibited by in slaughterhouses, 334;
pride of, 334

Cebus fatuellus, observations on intelligence of, 484-98

Cecil, H., on tactics displayed by hunting wasps, 194

Cephalopoda, intelligence of, 29-30

Cetacea, 327-28

Challenge, mode of, in gulls, 291

Charming of snakes, 264

Cheiroptera, 341

Chelmon rostratus, 248

Chimpanzee, play of, 476-77

Chinese swallow, nidification of, 292

Chironectes, 243

Choice, as evidence of mind, 2

Clark, G., on intelligence of a bat, 341

Clark, Rev. H., on harvesting ants, 99;
on dog recognising portrait, 454-5

Clarville, on co-operation of beetles, 228

Clavigero, on sympathy of pelicans for wounded companions, 275

Claypole, on intelligence of horse, 331-2

Cnethocampii pitzocampa, 244

Cobra, sexual affection of, 256;
charming, 265;
intelligence of, 262

Cock, domestic, killing hen upon hatching out eggs of other birds, 278

Cœlenterata, movements of, and question concerning their intelligence, 22

Coleoptera, 226-9;
co-operation of, 226-8;
other instances of intelligence, 228-9

Colquhoun, on reasoning power of a dog, 463-4

Commensalism, between crab and anemone, and between mollusk and anemone, 233

Communication, see Co-operation

Concerted action, see Co-operation

Cones, Captain Elliot, on intelligence of wolverine, 348-50

Conilurus constructor, 326

Conklin, W. A., on elephants thatching their backs, 409

Consciousness, as evidence of mind, 2;
gradual dawn of, 13

Conte, John Le, on reasoning power of a dog, 460-1

Cook, Capt., on tree ants, 111;
intelligence of tree-ants, 133

Cook, George, on dog dragging mat about to lie upon, 466

Co-operation,
of ants, 48-49, 51-59, 64 et seq.
(in making slaves and waging war), 85-96;
(in sundry occupations), 96-100;
(in harvesting), 108-10, 111-14;
(of apparently different species), 114-122;
(of military ants), 127-30, 132-4, 136-40;
of bees, 159-74;
(in general work, wars, and architecture), 177, 178, 184-6, 190-2;
of termites, 198-203;
of beetles, 226-8; of birds, 318-22;
of horses and asses, 333;
of bison and buffalo, 335;
of pigs, 339;
of rats, 361, 362;
of mice, 364;
of beavers, 367-83;
of elephants, 401;
of foxes, 433;
of wolves, 433 and 436;
of jackals, 432-5;
of baboons, 483

Corse, on memory of elephant, 386, 387;
emotions of elephant, 393

Couch, on maternal instinct of hen, 272;
mode in which guillemots catch fish, 285;
mode of escape practised by swan, 290;
birds removing dung from neighbourhood of their nests, 290;
blackbirds mobbing cat, 291;
nidification of swan, 296-8;
crows punishing offenders, 323-4;
intelligence of hare, 359;
cat unlocking door, 424;
fox avoiding trap, 428;
catching crabs with tail, 432;
mode by which a dog killed crabs, 459

Corvus cornice, punishing offenders, 323, 324

Cowper, on intelligence of hare, 359, 360

Cox, C., playhouses of bower-birds presented by him to Sydney Museum, 280

Crabs, 231-4

Craven, on intelligence of a sow, 340

Crehore, on foxes avoiding traps, 428, 429;
on dog recognising portrait, 453

Cripps, his elephant dying under emotional disturbance, 396

Criterion of mind, 4-8

Crocodiles, 263

Crow, Capt. Hugh, on sympathy shown by monkeys for sick companion, 473, 474

Crows, memory of, 266;
breaking shells by dropping them on the stones, 283;
punishing offenders, 323-5

Cruelty, of cat, 413

Crustacea, 231-34

Cuckoo, parasitic instincts of, 301-7;
eggs of coloured like those of the bird in whose nest they are laid, 307-9;
American, 305, 306

Curiosity, of fish, 247;
of birds, 278, 279;
of ruminants and swine, 335;
of monkeys, 477

Curlew, nidification of, 292

Cuvier, his orang drawing chair to stand upon to reach a latch, 481;
on birds dreaming, 312