DACE, tamed,246Daldorff, on climbing perch,248,249Dampier, on frigate-pelicans plundering boobies,284;on monkeys hammering oyster shells with stones,481Daphnia pulex, seeking light, especially yellow ray,23Darwin, Charles, on apparent intelligence of worms,24;of oyster,25;of snail,27;Mr. Hague's letter to, on powers of communication in ants,54-7;observations on ants keeping aphides,60,61;on ants making slaves,64,66,67;communications of Lincecum to, on harvesting ants,103,107;on proportional size of ants' brain,140;communication of Müller on powers of communication in bees,157;origin and development of cell-making instinct,173-7;instincts of neuters,181;quotation in MS. from Sir B. Brodie on bees supporting their combs,185-6;his 'law of battle' in relation to spiders,205;intelligence of crab,233;his theory of sexual selection,279-82;sense of smell in vultures,286;on Wallace's theory of correlation between colour of sitting birds and form of their nests,299;instincts of cuckoo,304-6;birds dreaming,312;Gauchos taming wild horses,329;memory of horse,330;intelligence of bear,352;of elephant,398,402;collective instinct of wolves,436;duration of memory in dogs,438;intelligence of Eskimo dogs,462;reasoning of retriever,463-4;maternal care and grief of monkey,472;sense of ludicrous in monkeys,476;curiosity and imitativeness of monkeys,477;imitativeness of man,477-8;intelligent observation displayed by monkeys,479,480Darwin, Erasmus, on bees ceasing to store honey in Barbadoes,187;wasp dismembering fly to facilitate carriage,195;unmoulted crab guarding moulted,233;crows breaking shells by dropping them on stones,283;bird shaking seed out of poppy,286;elephant acting nurse to young child,408Darwin, F., on bees biting holes through corollas,189Davis, on instincts of larvæ of bombyx moth,239Davy, Dr., on instincts of alligators,256,257;taming cobra,265;performing operation on elephants,400Davy, Sir H., on eagles teaching young to fly,290Day, F., on intelligence of fish,244-52Deceitfulness, of elephant 410;of dog,443,444,450-52,457,458;of monkey,494Deer, intelligence of,336,338,339De Fravière, on powers of communication in bees,158;their scouts,168Descartes, his hypothesis of animal automatism,6Dicquemase, on intelligence of oyster,25Dipterous insects, intelligence in finding way out of a bell-jar,153,154;gad-fly,230;house-fly,230,231Division of labour,seeCo-operationDog, ringing bell,423;knocking knocker,423;collective instinct of,435,436;general remarks on psychology of, as influenced by domestication,437,438;memory of,438;emotions of,438-45;pride and sensitiveness,439-42;intolerance of pain,441;emulation and jealousy,442,443;sense of justice,443;deceitfulness,443,444;sense of ludicrous and dislike of ridicule,444,445;general intelligence of,445-70;communicating ideas,445-7;instances of reason,447-69Dolomedes fimbriata,213Doras,248D'Osbonville, on monkeys administering corporal chastisement to their young,482,483Dreaming, of birds,269,312;of ferrets,347Duchemin, M., on toads killing carp,254Duck, conjugal fidelity of,270,271;conveying young on back,289Dugardin, on communication among ants,49;in bees,156Duncan, on cunning of a dog,451Dzierzon, on cause determining sex of bees' eggs,162;bees repairing injuries to their cells,186EAGLE, plundering instinct of white-headed,284;teaching young to fly,290;variations in nest-building,299;submitting to surgical operations,313,314Earwig,229,230Ebrard, on co-operation of ants,132Echinodermata, movements of,23Edmonson, Dr., on crows punishing offenders,323,324Edward, on intelligence of frogs,255;sympathy of terns for wounded companion,274,275;crows breaking shells by dropping them on stones,283;co-operation of turnstones,321Edward, H., on honey-making ants,111-14Eimer, Dr., on voluntary and involuntary movements ofMedusæ,22,23Elephant, general remarks upon,386;memory of,386,387;emotions of,387-96;vindictiveness,387-9;sympathy,389-90;rogue,393,394;dying under effects of emotion,395,396;general intelligence of,396-410;enduring surgical operations,399-400;vigilance,401;formation of abstract ideas,401,402;intelligence of tame decoys,402-6;of tame workers,306-8;thatching their backs,308,309;removing leeches, and fanning away flies,309,310;concealing theft,410Ellendorf, Dr. F., on leaf-cutting ants,95,96;on ants making a bridge,137Elliot, on collective instinct of wolves,433Emery, J., on powers of communication in bees,157Emulation, of birds,277;of dogs,442Encyclopædia Britannica, on bees following floating hives,149;battles of queen-bees,163,164;parasitic instincts in birds,306Endurance, of pain by wild dogs,441;of surgical operations by eagle,313,314;by elephants,399,400;by monkey,482Engelmann, onDaphnia pulexseeking yellow light,23Epeira aurelia, Mr. F. Pollock on perfection of web built by young,217Erb, G. S., on intelligence of deer,338,339Esox lucius,246Espinas, on co-operation of ants,130FABRE, on instincts of sphex-wasp,180,181Faister, Mdlle de, her tame weasel,346Falcon, variations in nest-building,299Faraday, J., on intelligence of skate,251Fascination, alleged, by snakes,263,264Fayrer, Sir J., on fascination by and charming of snakes,264Fear, in horses,329;in ruminants,334;in rabbits,355;in rats,360excited in dogs by portraits,455-7;in monkey by snakes,477,and by imitation monkey,495Ferret,347Fire-flies, stuck on nests by baya-birds,294Fish,241-53;comparison of brain with that of invertebrata,241;emotions,242-7;nidification, courtship, and care of young,242-6;pugnacity, and social feelings,242;anger,246,247;play, jealousy, curiosity,247;angler,247,248;jaculator,248;travelling over land,248;climbing trees,248,249;migrations,249,250;general intelligence,250-53Fisher, J. F., on hen removing eggs with her neck,288Fleeson, Captain B., on honey-making ants,111-14Fleming, W. J., on intelligence of horse,330Fleury, Cardinal, on intelligence of ants in making bridges,135Forbes, on nidification of tailor-bird,293Forbes, James, on monkey begging for dead body of companion,472Forel, on ants;recognising slaves,43;and fellow-citizens,44;swarming habits,58;experiment in rearing together hostile species,59,60;tunnelling to obtain aphides,61;warfare,68-77;play,88;intelligence shown in architecture,129Forsteal, on termites,198Forster, W., on intelligence of a bull,338Fothergill, Percival, on reasoning power of a dog,466Fouillouse, J. de, on intelligence of hares,357,358Fox,426-33;lying in wait for hares,426,427;avoiding traps,427-30;allowing itself to be extricated from trap,431;catching crabs with tail,432;collective instinct in hunting,433Fox, C., on intelligence of porpoises,328Frankland, Mrs., on cock bullfinch recognising portrait of hen,311Franklin, on powers of communication in ants,49Franklin, Dr., on sympathy in parrots,276Frogs,254,255Frost, Dr., on cat sprinkling crumbs to attract birds,418,419Furniss, J. J., on elephants thatching their backs,408,409
DACE, tamed,246
EAGLE, plundering instinct of white-headed,284;teaching young to fly,290;variations in nest-building,299;submitting to surgical operations,313,314
FABRE, on instincts of sphex-wasp,180,181