INDEX 



561 



Bay of Fundy, tide, 179 



Bay of Naples, coralline areas, 201 



Bear animalcules, 355 



Beddard, 119 25 , 376 10 



Bee fauna in steppes, 461 



Beebe, 160, 161, 163 65 , 221 21 , 223, 247 1 , 



249, 256, 269 5 , 404, 418 9 , 419 93 

 Beetles of the alpine zone, 499 

 Behrens, 357 7 



Bell shape in pelagic animals, 230 

 Belonc, 37, 189 

 Belostoma, 113 

 Belt, 96 48 , 442 38 

 Bembex, 413 

 Bennett, 419 44 

 Benthal, 176, 177 



subdivisions of, 178 

 Benthic life compared with pelagic, 238 

 Benthos, 178, 326 

 Bere, 357 40 



Berg, 348, 358 64 ^ 68 , 376 16 , 488 7 

 Berg, Bengt, 475 

 Berger, 21\ 464, 468 69 

 Bergmann, 418 26 

 Bergmann Principle, 385 

 Bergmann Rule, 502 

 Bering Strait, land connection, 111 

 Bermudas, reef corals, 24 

 Bequaert, 442 39 

 Beroe, 225, 255 

 Beroe cucumis, 278 

 Beryx, 53 

 Besser, 468 61 

 Bilimek, 537 22 

 Biochore, 136, 137 

 Biocoenosis, 135, 137, 138, 139, 140 

 Biocycle, 136, 137 

 Bioluminescence, 255, 256 

 Biosphere, 135 



Biotic control of insect pests, 553 

 Biotic pressure, reduction in islands, 521 

 Biotope, 2, 135, 137 

 Bipalium kewensis, 552 

 Bipolarity, 277 

 Bird, 442 55 , 468 19 

 Bird cliffs, 483 



Bird fauna, extent on islands, 132 

 Bird population, 482 



Birds, abundance in the tropics, 403 



altricial on cliff rookeries, 484 



cold resistance, 384 



of cultivated land, 540 



of open country, 449 



of rain-forests, 432 



of seacoast, 480 



of swamps and shores, 472 



transported by wind, 68 

 Birge, 300 10 



Birge and Juday, 300 u , 357 30 

 Birgus latro, 44, 524 

 Birula, 162 14 

 Bison, 457 



migration of, 412 

 Bison bonasus, 554 

 Bittium, 181 

 Black flies, 313, 316 

 Black Sea, absence of life in depths, 1 1 



absence of oxygen in depths, 18 



hydrogen sulphide in, 174, 280 

 Black water rivers, 368 

 Blanc, 376 47 

 Blanchard, 134 14 , 376 61 

 Blanford, 97 69 , 419 49 

 Blarina, 546 

 Blegvad, 163 44 

 Blennius, 37, 181 

 Blicke, 419 85 

 Blissus, 540 

 B. leucopterus, 539 

 Blochmann, 71 8 , 286 38 

 Boa, 89, 113 

 Boarmia consonaria, 125 

 B. consortaria, 125 

 Boas, 55 27 

 Bodo, 550 

 Body appendages in rabbits and foxes, 



390 

 Body cooling, 393 

 Boetticher, 418 26 

 Bog conditions, 475 

 Bog waters, 366 

 Boleopthammus, 471 

 Bollinger, 71 40 , 420 136 , 441 1 . 25 

 Bombina bombina, 500 

 Bombus consobrinus, 509 

 B. horlorum, 509 

 B. hyperboreus, 509 

 B. kirbyellus, 509 



