INDEX
Abbott, Dr. C.C., instability of habits of birds, 76
on American water-thrushes (Seiurus), 117
Mr., drawings of caterpillars and their food plants, 203
Accessory plumes, development and display of, 293
Acclimatisation, 94
Achatinellidæ, Gulick on variations in, 147
Acquired characters, non-heredity of, 440
Acræeidæ, mimicry of, 247
Adaptation to conditions at various periods of life, 112
Adolias dirtea, sexual diversity of, 271
Ægeriidæ, mimicry by, 240
Agaristidæ, mimicry of, 246
Agassiz, on species, 5
on North American weeds, 15
Agelæus phœniceus, diagram showing variations of, 56; proportionate numbers which vary, 64
Albatross, courtship of great, 287
Allen, Mr. Grant, on forms of leaves, 133
on degradation of wind-fertilised from insect-fertilised flowers, 325 (note)
on insects and flowers, 332
on production of colour through the agency of the colour sense, 334
Mr. J.A., on the variability of birds, 50
Allen, Mr. J.A., on colour as influenced by climate, 228
Alluring coloration, 210
American school of evolutionists, 420
Anemone nemorosa, variability of, 78
Animal coloration, a theory of, 288
general laws of, 296
intelligence, supposed action of, 425
characteristics of man, 454
Animals, the struggle among, 18
wild, their enjoyment of life, 39
usually die painless deaths, 38
constitutional variation of, 94
uses of colours of, 134
supposed effects of disuse in wild, 415
most allied to man, 450
Antelopes, recognition marks of, 219
Anthrocera filipendula inedible, 235
Apples, variations of, 87
Arctic animals, supposed causes of white colour of, 191
Argyll, Duke of, on goose reared by a golden eagle, 75
Artemia salina and A. milhausenii, 426
Asclepias curassavica, spread of, 28
Asses running wild in Quito, 28
Attractive fruits, 306
Australia, spread of the Cape-weed in, 29
fossil and recent mammals of, 392
Azara, on cause of horses and cattle not running wild in Paraguay, 19
Azores, flora of, supports aerial transmission of seeds, 368
