Animal Life and Intelligence

by C. Lloyd Morgan

D

• Dallinger, Dr., his temperature-experiments on monads, [147]
• Danais, [203]
• Daphnids, absence of fertilization in reproduction of, [45];
  • colour-vision in, [292], [296];
  • leucocytes of, [439]
• Darwin, Charles. Natural selection and the struggle for existence, [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 influence of parent on offspring, [122];
  • on the co-ordinating
  • power of her organization, [125];
  • hypothesis of pangenesis, [131];
  • on fur 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, [236];
  • on the greater variability of male, [237];
  • on attention in monkeys, [342];
  • on brain of ant, [358];
  • on gestures of anger and rage, [389];
  • on pleasures and pains of animals, [394];
  • on bravery of a monkey, [396];
  • on Abyssinian baboons, [405];
  • on sense of humour in the dog, [406];
  • on neuter insects, [440];
  • on selection of oxen, [441];
  • on acquisition of fear of man by birds, [443];
  • on satin bower bird, [450]
• Death, natural introduction of, [186], [193]
• Deceit in dogs, [400]
• Degeneration, [183]
• Desert animals, inconspicuousness of, [89]
• Descartes on pineal gland, [288]
• Desire, [460], [463]
• Destruction, indiscriminate, as opposed to elimination, [76]
• Development of organisms distinct from growth, [6];
  • reproduction and, [36];
  • is differential growth, [49];
  • of a vertebrate, diagrammatic account of, [51];
  • comparative, of some vertebrates, [220]
• De Vries, [132], [159]
• Differentiation in protozoa, [40];
  • in metazoa, [41];
  • during development, [49];
  • of reproductive cells, [143];
  • and integration, [183];
  • of tissues, [232]
• Difflugia, [360]
• Dimorphism in larvæ, [187]
• Discrimination in the sense of touch, [245];
  • hearing, [262];
  • sight, [275];
  • its fundamental nature, [338];
  • in sea-anemone, [359]
• Disease, elimination by, [80]
• Display, [207]
• Disuse, panmixia and, [189];
  • negative and not positive, [196];
  • use and, [209]
• Divergence among birds, illustrated from Wallace, [97];
  • through diverse adaptation, [111]
• Dixon, Mr. Charles, effects of climate on the colours of birds, [164];
  • on chaffinch nests, [454]
• Dog, effect of Indian climate on, [164], [167];
  • greyhounds in Mexico, [167];
  • sense of smell in, [255], [338];
  • vague percept of, [339];
  • and the feelings of other animals, [340];
  • and pictures, [341];
  • powers of communication, [344];
  • swimming rivers, [365];
  • cleverness of, [367];
  • sympathy in, [397];
  • idea of caste, deceit, [400];
  • endurance of pain, [402];
  • sense of justice in, [404];
  • punishing pup, [405];
  • sense of humour in, [406];
  • swimming a deferred instinct in, [423];
  • turning round to make a couch, [444]
• Dog-fish, sense of smell in, [257]
• Domestication, variations effected by, [171], [215];
  • crossing and reversion, [230]
• Doris tuberculata, [84]
• Dreaming, [341];
  • and the animistic hypothesis, [495]
• Dromia vulgaris, [457]
• Drones developed from unfertilized ova, [45];
  • second polar cell extruded, [153]
• Dubois, M., on Proteus, [294]
• Ducks, Sir J. Crichton Browne on, [171];
  • Dr. Rae on instinctive wildness of, [435]
• Duration of life, [186]