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 
Achatinellidaa, Gulick on variations 
in, 147 
Acquired characters, non-heredity of, 
440 
Acrseid*, mimicry of, 247 
Adaptation to conditions at various 
periods of life, 112 
Adolias dirtea, sexual diversity of, 
271 
ADgeriidae, mimicry by, 240 
Agaristidse, mimicry of, 246 
Agassiz, on species, 5 
on North American weeds, 15. 
Agelaeus phceniceus, diagram showing 
variations of, 56; propor¬ 
tionate 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 in¬ 
fluenced 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 trans¬ 
mission of seeds, 368 
