Index 



487 



Baartsch, 256 



Bacillus pestis, see Eat, parasites 



Bach, inheritance, 273 



Bachman, 54 



Bacon, 74 



Bacteria, 95, 480; nitrogen-fixing, 



298 



reactions, 305 

 related to disease, 440 

 resistance to boiling, 382 

 water, 378, 381 



Bacterium, volition, 281 



Badger, distribution, 176 



Bailey, quoted, 417 



Bainbridge, quoted, 470-1 



Baird, work, 44, 61, 426 

 ill. 45 



"Bakewell's Geology, 45 



Balanoglossus, structure, relation 



to vertebrates, 106, 107 

 mouth, 110 



Baleen, see Whalebone 



Balsam fir, distribution, 174, 175 



Bamboo, 412, 413, 414; ill. 410 



Banta, 232 



Bantam, see Sexual selection 



Barn, see Owl 



Barnacles, see Movement 



Barnard Free Skin and Cancer 

 Hospital, 86, 472 



Barren ground caribou, distribu- 

 tion, 172 



Barriers to migration, 152, 155-7 



Bartram, John, 20, 63 



Bartram, William, 20, see Wilson, 

 A. 



Bat, see Adaptation; Animals, dis- 

 persal of 



Bates, 330, 342 



Bateson, 88, 243, 263 



Bdellostoma, 108 



Beans, see Nitrogen fixation; Pure 

 lines 



Bear, see Polar 



Beaufort Biological Station, 437 



Beauperthuy, 450 



Beaver, 425; distribution, 176; ill. 

 175-6 



Bee, see Mimicry; Sex cycle 



Beebe, 63, 134 



Bees, relation to flowers, 330; ill. 



332 



worker, structure, function, 331 

 see Heliotropism ; Swarming ; 

 Color, warning 



Beetle, ladybird, see Vedalia 



Beetles, chrysomelid, see Calli- 



grapha 



potato, distribution, 245-6 

 experimental production of 



variation, 246-8 

 food, 245 

 habits, 245 

 ilL 247 



Behring, 431; Isthmus, 148 

 Sea Tribunal, see Seal contro- 

 versy 



Strait, barrier, 254 

 Belknap, 364 

 Bennett, quoted, 443 

 Beriberi, 447; symptoms, cause, 



292-3 



Bernard, 320 

 Beroe, 190; ill. 189 

 Big trees, see Sequoia 

 Bile pigment, see Pigment 

 Biological bureaus, U. S., 87 



remedies, 320; inspection of, 474 

 Biological Station defined, 68 

 see Beaufort, Fairport, Havana 

 Stations, locations, 71 

 see Marine 

 Biological Survey, see Survey, 



IT. S. 



Biology inland waters, 379 et seq. 

 needs, 481-2 

 problems, 478 et seq. 

 Biometer, 318 



Bird laws, see Migration, Lacey 

 lice, see Isolation 

 of Paradise, see Sexual selection 

 Birds, air sacs, 130 

 bones, 130 

 classification, distribution, see 



U. S. Biological Survey 

 feather, development, 133 

 origin, 134 



structure, 133-4; ill. 133 

 flight, origin, 133-5 

 food, 347-8; see Hawks, Owls, 



U. S. Biological Survey 

 lungs, 130 

 migration, 152, 360; see U. S. 



Biological Survey 

 sex determination, 210, 232 

 sex-linked inheritance, 214 

 skull, 131 

 sternum, 130 

 temperature, 130 

 wings, 132 



see Adaptation; Color, warning; 

 Instincts; Isolation; Sexual 

 Selection 

 Birge, 382 



