Animal Life and Intelligence

by C. Lloyd Morgan

T

• Tameness, instinctive, [435]
• Tanner, Miss Agnes, on a thrush, [398]
• Tasmanian salmon, [99]
• Taste, standard of, [95], [205];
  • sense of, [250]
• Teeth of pike, [437]
• Temperature-sense, [249]
• Terror, [387]
• Thaumalia picta and amherstiæ, [106]
• Thekla, instinct of, [430]
• "Things in themselves," or noumena, [470]
• Thomas, Mr. Oldfield, on rats of Solomon Islands, [100]
• Thomson, Mr. J. A., Prof. Patrick Geddes, and, on anabolism and katabolism, [44];
  • quoted, [50], [137], [237];
  • his "History and Theory of Heredity," [35]
• Thought, [482]
• Thrush, hearing in, [264];
  • sympathy in, [398]
• Thunberg on young hippopotamus, [423]
• Tissues of the body, [20]
• Tooke, Mr. Hammond, on egg-eating snake, [88]
• Tools, use of, by animals, [370]
• Touch, sense of, [245]
• Transformation and metamorphosis, [7]
• Transparency of some marine organisms, [83]
• Treat, Mrs., her experiments on caterpillars, [59]
• Tricks, [355]
• Trionyx, [181]
• Trochus, [292]
• Tuco-tuco, [194]
• Turner, Sir Wm., on New Guinea natives, [169]
• Turkey, instinctive emotion in the, [395]
• Twins, Mr. Galton's investigations on, [169]
• Tylor, Alfred, on coloration in animals and plants, [201]

U

• Udders, enlarged, of cows, [215]
• Ultra-violet rays, [296]
• Unicellular organism. See Protozoa
• Unity of organism, [161], [234]
• Use and disuse, [146], [209]
• Utility of specific characters, [110]

V

• Vanessa urticæ, [165]
• Varanus benegalensis, [288]
• Variation, correlated, [59];
  • and natural selection, [61];
  • tabulated by A. R. Wallace, [63];
  • in wing-bones of bats, [63];
  • advantageous, neutral, and disadvantageous, [95];
  • in climatal and geographical conditions, [112];
  • secular, in climate and life area, [113];
  • effect of good times and hard times on, [114];
  • heredity and the origin of, [122];
  • a source of, in use and disuse, [146];
  • sexual union, a mode of origin of, [149];
  • in definite directions, [151];
  • produced by extrusion of second polar cell, [153];
  • protozoan origin of, [156];
  • due to the action of environment, [163];
  • to the effects of use and disuse, [168];
  • to domestication, [171];
  • in male stag-beetles, [180];
  • in mating preferences, [205];
  • co-ordinated in Irish "elk" and giraffe, [212];
  • nature of, [216];
  • in amount of developmental capital, [221];
  • inheritance of, [223];
  • origin of, [231];
  • limitations of, [232];
  • fortuitous, in bat's wing, [235];
  • definite direction of, [238];
  • in limits of colour-vision, [281];
  • in habits and instincts, [445], [456];
  • in mental evolution, [496]
• Vertebrata, diagrammatic account of development of, [51]
• Verworn, Dr., on protozoa, [440]
• Vespertilio mystacinus, [70]
• Vesperugo leisleri, [65]
• Vesperugo noctula, [67]
• Vesperugo pipistrellus, [69]
• Vigour and vitality, application of, in male, [237];
  • in female, [238]
• Vindictiveness, [401]
• Vision, [272]; mosaic, [291]
• Volition, [459]
• Volucella bombylans, [90]
• Voluntary and involuntary activities, [416]
• Vorticella, [38]

W

• Waelchli, Dr., on colour-globules in birds, [284]
• Wallace, Mr. A. R., tabulations of variations, [63];
  • on tortoiseshell butterfly of Isle of Man, [81];
  • on protective colours in fishes, [83];
  • on divergence among birds, [97];
  • on recognition-marks, [102];
  • on papilionidæ of Celebes, [165];
  • on the dull colours of hen birds, [199];
  • on origin of secondary sexual characters, [200];
  • and A. Tylor on physiological guidance, [201];
  • on preferential mating, [203];
  • on reversion in grouse, [229];
  • on migration in birds, [428];
  • on nest-building in birds, [453];
  • on the song of birds, [455];
  • on materialism, [464];
  • on mathematical and artistic faculties, [484], [497]
• Walker, R., on reversion in bull, [229]
• Ward, Mr. J. Clifton, on dog, [345]
• Warning-coloration, [82];
  • involves perception, [351]
• Warren, Mr. Robert Hall, a dog anecdote, [344]
• Wasp, use of antennæ, [291]
• Waste and repair essential life-processes, [8]
• Water, changes of salinity in, [164]
• Water-ousel, [446]
• Waterton, Charles, [256]
• Watson, "Reasoning Power of Animals," [369]
• Webb, Dr., his operation on an elephant, [369]
• Weber, on musical discrimination, [309];
  • on muscular sensation in eye, [310]
• Weir, Mr. Jenner, on nest-building in birds, [453]
• Weismann, Dr., on continuity of germ-plasm, [138];
  • on distinctness of germ-plasm from body-plasm, [140];
  • on meaning of second polar cell, [153];
  • on protozoan origin of variations [156];
  • on the introduction of senility and death, [184];
  • on the distinction of birds' eggs, [189];
  • on the effects of panmixia, [190];
  • on acceleration, [222];
  • his views applied to instinct, [438];
  • the intellectual faculties, [497]
• Westlake, Miss Mabel, on the parrot, [353]
• Whiskered bat, [70]
• White, in arctic forms, [165];
  • Mr. Poulton on production of, [202];
  • in grouse, instance of reversion, [229]
• Wildness of birds, instinctive, [435]
• Will, F., on taste in bees, [253]
• Wilson, Sir Charles W., on wounded camels, [392]
• Wilson, Edward, measurements of bats, [63]
• Wing-bones of bats, measurement of, in illustration of variation, [63]
• Words, "understanding" of, by animals, [347]
• Wrasse, keenness of vision of, [287]

X