590 



INDEX 



Bedbug, 284 



Bee milk, 292 



Beebread, 292 



Bees, 291-295, 431, 455, 463, 473, 494, 543 



proboscis, 273 

 Beetles, 275, 285, 289, 291, 485 

 Behavior, 54-56, 66-67, 72-74, 131-132, 139-140, 

 149, 155-156, 162-163, 174, 197-198, 206, 

 213, 215-216, 225, 234-235, 256-257, 264, 

 268-270, 290-293, 295, 298-299, 305, 315, 336, 

 348, 354-355, 358, 369-371, 397-398, 402- 

 403, 417-418, 469-476, 479, 493-498, 501-503 

 Belly, muscle, 443 

 Benthos, 483 

 Bible, 25 

 Bichat, 553 

 Bighorn, 507 



Bilateral symmetry, 51, 164, 544-545, 547 

 Bile, 323 

 Bile duct, 317 

 Binary division, 67 



Binomial nomenclature, 58-59, 543, 546 

 Biogenesis, 265 

 Biogenetic law, 265, 543, 554 

 Biogenetic series, 265-267, 319, 325-327, 360, 



438, 519-520 

 Biology, 6, 40-41 



origin of word, 517 

 Biota, 477 

 Biotic factors, 479 

 Biotic succession, 480-482 

 Biparental reproduction, 105 

 Bipinnaria, 197, 198, 206 

 Biradial symmetry, 155, 644, 547 

 Biramous appendages, 251, 260 

 Birds, 111, 289, 308, 334, 375-378, 390-405, 432, 

 438, 442, 448, 450, 456, 457, 475, 493, 495, 

 502, 505-507, 509, 515, 537 



branchial arches, 360 



lung, 441 



wing, 52 

 Birds of paradise, 402, 506 

 Birth, 421 

 Bisexuality, 105 



(See also Diecious) 

 Bisons, 607 



American, 502, 507, 509 

 Biting lice, 283 

 Bittern, 481 



beak, 399 

 Bivium, 200 

 Bladder, air, 344, 346, 348-349 



gall, 323 



swim, 348 



urinary, 317, 325 

 Bladder worm, 173 



Blastocoel, 119-123, 140, 371, 418, 449 

 Blastoderm, 119, 120, 123, 140, 162, 258, 355, 356, 



376, 449 

 Blastoids, 613 

 Blastomeres, 118-122, 149, 150, 162, 214, 356, 



372, 418, 449, 538 

 Blastopore, 119, 120, 122, 371 

 Blastula, 119-123, 140, 149, 150, 198, 214, 236, 

 372, 418, 449 



Blending inheritance, 534, 636 



Blepharoplast, 79 



Blind spot, 333 



Blind worms, 367 



Blister beetles, 282 



Blood, 99, 212, 230, 231, 276, 324, 462, 491 



Blood corpuscles, 29, 231, 316, 324, 462, 552 



Blood plasma, 231, 316, 324, 462 



Blood platelets, 324 



Blood pressure, 462, 464 



Blood serum, 324, 491 



Blood-vascular system, 441, 462 



nemertines, 183 



(See also Circulatory system) 

 Blowing of whales, 417 

 Body, fighting disease, 490 



self-regulation, 489 

 Body cavity, 176, 177, 182, 185, 317, 547 



{See also Coelom; Hemocoel) 

 Body changes, 432 

 Body coverings, 378, 456 

 Body divisions, 544-545 

 Body heat, 455 

 Body mass, 210, 2J1 

 Body plan, 316, 317 

 Body regions, 304 

 Body stalk, 418, 420 

 Body siu-face in respiration, 440 

 Bone, 98, 99, 320, 463 



corpuscle, 29 

 Bones, 103, 104, 318-320 



(See also Skeleton) 

 Bony fishes, 344 

 Bony ganoids, 344, 345 

 Bony labyrinth, 330 

 Book gills, 302, 303, 440 

 Book lungs, 297, 298, 300, 440 

 Borers, 286 

 Bottom forms, 483 

 Bouton, 273 

 Bowfin, 345 

 Bowman's capsule, 326 

 Brachiolaria, 206 

 Brachiopoda, 189, 544, 647 

 Brachiopods, 189-190, 437, 440-442, 513 

 Brain, 225, 240, 276, 277, 307, 312, 314-317, 328, 

 336, 337, 340, 341, 351, 352, 368, 370, 380, 

 381, 395, 408, 410, 423, 464, 618, 645 

 Branchial arches, 360, 361, 619 

 Branchial arteries, 339, 340, 360, 361 

 Branchial pouch, 373 

 Branchiata, 305 



Branchiostegal membrane, 352, 363 

 Branchiostegal rays, 346 

 Breaking point, 258 

 Breathing, 352, 353, 408 

 Breeding, 534, 636 

 Bridges, 499 



Brittle stars, 201, 202, 513 

 Broadbills, 507 

 Bromine, 19 

 Bronchi, 441 

 Brood pouch, 263, 264 

 Brown, Robert, 31 

 Bruner, L., 282 



