INDEX 



313 



British species, extinction of, 183 



—186 

 Bubo inaxiimis, loi 



Calcariiis lappoiiiais^ 89 



Canaries, birds of, 190 



Canary Islands, endemic birds of, 

 200 



Canary Islands, number of eggs 

 laid by birds in, 202 



Canary Islands, the, 42, 43, 44 



Caniis, 34 



Cape Flora, the, 58 



Cape Verd Islands, 45 



Captive birds, restlessness of, 234 



Carpodacus erytJuinus^ 88 



Centropus, 38 



Certain routes followed by certain 

 individuals, 235, 236 



CertJiilmida desertoritin, 46 



Cervjis dtcranios, 36 



Cervits viegaceros^ 139 



Cervtis polignaais, 11,36 



Channel Islands, 189, 19S 



Charadriid.b, 57 



Charadriid/E, the Pr^e-Pliocene 

 ancestor of, 54 



Chart of principal Migration 

 Routes into the British Area, 

 209 



Ciconia alba, 98 



Cinches melanogaster, 126 



Clangitla islandica, 23, 106 



Climatic change during Post- 

 Tertiary time, results of, 26, 27 



Coasting migrants over the British 

 Islands, routes followed by, 229 

 —231 



Coasting migration in spring, 247, 

 248 



Cold climates in North Polar 

 latitudes, no pre-glacial evi- 

 dence of, 297 



Col/ocah'a, 38 



Coluniba anas, present emigra- 

 tions of, 177 



Colitmba livia, northern range of, 

 114 



Columba pa/unibits, present emi- 

 gration of, 177 



COLYMBID^, 167 



Colytnbus arctiais, 1 5 3 



Colynibiis arcticus, range of, 1 29 



Colymbus glacialis, glacial range 

 base of, 108 



Commingling of Southern and 

 Temperate forms, 19 



Comparative movements of the 

 Snow Bunting, the Northern 

 Bullfinch, and the Crested 

 Titmouse, 278 



Competing species,influence of, 89 



Continental islands, 188 



Continental islands, ancient, 188 



Continental islands, recent, 188 



Corollaries, 60, 61 



Corvtis comix, 126, 147 



Corvus corone, 46 



Corvits frugihgus, present emi- 

 grations of, 177 



Cossypha, 32 



Cross Migration in autumn, 266 



Cygniis bcwicki, 113 



Dartford Warbler, effects of severe 



winters on, 165 

 Deductions from the facts of 



proportional distribution, 154, 



Dispersal, a new law of, 60 



Dispersal, conditions of success- 

 ful, 300 



Dispersal not fortuitous, 310 



Dispersal of plants from bases 

 south of the equator, 304 



Dispersal of plants north and 

 south from equatorial range 

 bases, 298, 299 



Diver, Black-throated, range of, 

 128 



Droniolcca, 32 



Early migrants abnormal, 263 

 Earth's centre of gravity, changes 



in, 14 

 East Africa, change of climate in, 



51 



East and North-east Emigrants, 



Table of, 132 

 Eastern migrants,departure of, 244 



