INDEX 



Acclimatisation, 29, 45. And cf. 

 Introduction 



Acrotrerna dissectum, witii inter- 

 mediate stages, 219 



Adam's Peak, endemics of, 55 



Adaptation, 19, 55, 57, 59, 87, 148, 

 209, 210, 220, 224, 227, 229, 230, 

 231. And cf. Correlated varia- 

 tion. Endemic genera and species, 

 Evolution, Intermediates, Local 

 adaptation. Natural selection. 

 Species, Struggle for existence 



Advantage as a guide in evolution, 

 189. 212, 215, 221, 225; ruled out, 

 215, 219, 221 



Africa, endemic genera, 170, 178; 

 monotypes, 188, 189. And cf. 

 Canary Islands, Madagascar, Mas- 

 carene Islands, St Helena 



Age, effects of, :3, 4, 5, 6, 61, 62, 85, 

 99, 174 71., 196: the most powerful 

 factor, 6, 197, 198 



Age and Area, 4, 5, 6, 54, 61, 63 

 (statement of rule), 85, 103, 147, 

 150, 189, 206, 221, 225; applica- 

 tion to single species, 84, 85 ; to 

 animals, 200; to unallied forms, 

 86; and ecological results, 98; and 

 palaeobotanical study, 137, 147; 

 and the mutation theory, 222; 

 confirmation by prediction, 66, 

 76, 87, 230; in Australia, 64; in 

 Ceylon, 54; in Compositae, 119; 

 in'^New Zealand, 64; invasions, 

 76, 139, 234; objections to, 70, 

 84; position of the theory, 101; 

 reservations, 63, 70 



Aim of nature, 205, 215 



Alacran reef, endemics of, 152, 212 



Allied forms only comparable under 



age and area, 62, 85 

 America. See North America, South 

 America, Tropical America. And 

 cf. Alacran, Andes, Argentina, 

 Bahamas, Brazil, Chinese, Eu- 

 genia, Galapagos, Jamaica, .Juan 

 Fernandez, Lacioris, Mexico, New 

 York, Rio de Janeiro, Sequoia 

 Andes, endemics of, 176 

 Animals, applicability of age and 



area to, 200 

 Anodynes, verbal, 231, 244 

 Anthemideae, 127, 135, 136 

 Antiquity and amplitude, 116 

 Anuradhapura, climate of, 43 



Arber, Mrs A., 92 



Arctotidcae, 126, 127, 136 



Area, broken, 89; differences in, 

 occupied, 2, 33, 55; early species 

 gain in, on later, 34; fossil, 243; 

 graduation of, 58, 170, 229; in- 

 creasing more rapidly with age, 

 33; increasing with size of genus, 

 114—18; large, due to spreading, 

 11; minimum, occupied by com- 

 mencing species, 206; necessary 

 for origin, 10; of endemic genera, 

 171 ; of endemic species, 56, 150; 

 occupied, 2, 11, 33, 55, 115, 150, 

 151, 170, 191; phenomena matched 

 by those of size, 175; plants of 

 smaller, the younger, 206 ; possible 

 of occupation, 49; restricted, 57; 

 to which suited, 11. And cf. 

 Age and Area, Dispersal, En- 

 demic, etc. 



Argentina, spread of introductions 

 in, 26 



Argument of Part 1,7 ; of Partll, 107 



Asia, tropical, endemic genera, 178. 

 And cf. Ceylon, Chinese, India, 

 Krakatau, Maldives, Monsoons, 

 Taal 



Associations of plants, 20, 25, 30, 35, 

 50, 51, 229 



Astereae, 129, 130, 131, 134, 135 



Auckland Islands, 66-74, 230 



Australia, age and area in, 64; 

 endemic genera of, 170, 190; 

 endemic species of, 150; grasses 

 of, 64. And cf. West .Australia, 

 New Caledonia 



Average generic area, 126 ; necessary 

 in age and area, 61 



Axioms of the systematists, 105, 217 



Bahama Islands, endemics of, 64, 



150, 210 

 Barriers to spread, 12, 13, 16, 20, 21, 



36; especially Chap, v 

 Bateson, W.. 217 

 Beetles, hollow curve in, 202, 203, 



236 ; logarithmic curve, 241 

 Birds, dispersal by, 12-18 

 Boraginaceae, distribution in New 



Zealand, 161 

 Brazil, endemics of, 150, 170, 190, 



233; endemic genera, 170, 176; 



sizes of genera, 190. And cf. 



Eugenia 



