INDEX 



Brain coral, 309 



Brain stem, 102 



Brain vesicles, 154 



Branchial hearts, .squid, 390, 391 



Branchiate s;astropods, 386 



Hramhinecta, 437, 438 



BranchiobdcUidac, 416, 417 



Branchiopoda, 437, 438 



Branchwsloma, 148, 541, 550, 551; protone- 



phridia in, 519 

 Breastbone, 92 



Breathing, 56; regulation of, 124 125 

 Breeding, selective, 636 

 Bridges. C. B., 210 

 Brine shrimp, 439 

 British Isles, 632 

 Brittle star, 486, 497. 498 

 Bronchioles, 56 

 Bronchus, 55 



Brood pouch, ectoprocts, 360 

 Brov^n, Robert, 12 

 Brown body, ectoprocts, 359 

 Bryozoa. 356 



Budding, 141, 530; in ectoprocts, 361; in 

 Hydra, 299, 300; in Rhabdopleura, 543; in 

 suctorians, 259; in thaliaceans, 550; in- 

 ternal, in trematodes, 332, 530 



BulTon, 646 



Biifo americanus, 565, 566 



Buoula, 358, 360, 361 



Bull snake, 571 



Bullheads, 606. 611 



Bumblebee. 471 



Burrowing, of earthworms, 403 



Bush babv, 585 



Bmyam. 383; radula of, 384 



Butterfiy, 423, 465 



Byssus, 375; glochidial. 377 



Cabbage aphid, 609 

 Cabbage bug, 462 

 Cactoblastis, 614 

 Cactus, 613; in Australia, 614 

 Cactus moth. 614 



Caeca, 49; of leech. 419. 420; of squid, 389 

 Caecilian, 215, 564 

 Calcarea, 272, 2^3 

 Calciferous glands, 405 

 Calcium, 23, 119, 601 

 Callmecles sapidus, 440, 442, 443 

 Calorie, 29, 37 



Calyx, of entoprocts, 356, 357 

 C.'ambarincola philadelphica, 416 

 Cambarus, 425 



enamels, 580; evolution of, 631 

 (.'arm Ins, 631 

 Camerarius. 175 

 Canaliculi, 63 



Cams las^opus, 559; C. vidpes, 599; C. zerda, 

 599 



Capillaries, 51, 74; in earthworm. 406; in 



.\'ereis, 399; in squid, 390 

 Carapace, of crayfish, 426 

 Carbohvdrate metabolism, 35 37 

 Carbohydrates, 23, 30, 35, 70. 72; transport. 



storage, and use of, 76 

 Carbon dioxide. 35. 36. 37. 38. 79, 81. 82, 



102, 124, 516, 517 

 Carbonic acid, 82 



Carboniferous Period, and amphibians, 561; 

 and extinction of gra|)t()litrs, 540; and stem 

 reptiles, 566 

 Carboxypeptidase, 72 

 C.archesium, 258 

 Cardiac muscle, 67, 90, 115 

 Caret ta, 570 



Carnivora, 580, 586, 587 



Carnivorous animals, in food chains, 606; 

 limitation on numbers, 607 



Carothers, E. E., 185 



Carp, 559 



Carriers, of recessive genes, 200 



Cartilage, 61; elastic. 61; fibrous, 61; hvaline, 

 61 



Casein, 71 



Cassowary, 574, 578 



Castes, of ants, 475; of honevbee, 471. 473; 

 of termites, 458 



Castor canadensis, 590 



Cat, reproductive system of, 129 



Catabolism, 13, 38 



Cataclvsms, Doctrine of, 648 



Catalvst, 28 



Caterpillar, 465, 466, 467, 469, 470 



Catfish, 559 



Cattle, 580 



Cats, 580 



Caudata, 214, 217. 563, 564 



Cave art, of early man, 642, 643 



Cave bear, in prehistoric paintings. 642 



Cave-dwelling animals, eves of, 647 



Cell body, 17 



Cell center. 21, 39 



Cell constancy, in Acanthocephala, 356; in 

 nematodes, 351; in rotifers, 348 



Cell difTerentiation, 145, 158-159, 167 



Cell division, 38-44, 40, 124. 141, 145, 146- 

 148 



Cell localization, 145, 151-158 



Cell membrane, 17 



Cell products, 12 



Cell Theory, 8, 12, 141, 655 



Cells, 10, 12, 17, 20, 47, 58; chemistry of, 

 22-29; dissociation of, 17; division of, 38- 

 44, 40; fractionation of. 15; origin of. 619 



Cellular metabolism. 35 38. 79, 517 



Cellular respiration, 37, 79, 1 19 



Cellulose, 30, 74. 546 



Centers, of brain, 89, 102 



Centipedes, 423. 478, 479 



683 



