938 



INDEX 



Bone(s) — (Continued) 

 dermal, in reptiles, 570 

 development of, 666 

 development of types of, 660, 661 

 formation of, endochondral, 666, 667 

 intracartilaginous, 666 

 intramembranous, 666 

 membranous, 661, 666 

 perichondria! (periosteal), 667 

 parts of, 662 

 spongy, 660 (see also Bone, cancellous) 



characteristics of, 662 

 types of, 662 

 Bone cells, 659 {see also Osteocytes) 

 Bonnet, 55, 57, 216 

 Bony labyrinth, 851, 854 

 Bony layers, 659, 662 

 Bony platelets, of teleost fish scale, 565 

 Border fibrils, of smooth muscle, 702 

 Bouyancy structures, development of, 642 

 Boveri, T., 116, 215 



theory of fertilization, 267 

 Bowen, R. H., 126 

 Bowfin (see Amia) 

 Brachet, A., 794 



Brachet, J., 159, 240, 268, 270. 271 

 Brachial enlargement, of spinal cord, 821 

 Brain, development of, 822 



external morphological, 832 

 in chick, 813 

 in teleost fish, 813 

 five-part primitive, formation of, 822 

 later development of, 823, 832 

 primitive cavities of, 822 

 Brain region, of central nervous system, 812 

 Brambeil, F. W. R., 140, 792 

 Branchial arch(es), 527, 618, 619 



first, development of musculature of, 718 

 Branchial (gill) arches, 527 

 Branchial grooves (furrows), 527, 619 

 Branchial organs, 636 (see also Gills) 

 Branchial pouches, 527, 601, 619 

 Branchial rays, 673 

 Branchiomerism, 540 

 Branchiostoma, xv 

 Branchiostoma lanceolatum 



(see Amphioxus) 

 Branchynema, sperm development in, 151 

 Brauer, A., 369, 370. 444, 446 

 Broad ligament, 803 



Bronchus (Bronchi), apical, of mammalian 

 lung, 649 

 formation of, in chick's lung, 647 



in mammalian lung, 649 

 primary, in mammalian lung, 649 

 recurrent, 647 

 stem, of mammalian lung, 649 



Brood compartments, for care of young, 



911 

 Brood pouch (es), in pipefish, 188 



of marsupial frogs, 916 

 Brook lamprey, shrinkage of egg at fertili- 

 zation, 235 

 Biifo, role of thyroid gland in metamorpho- 

 sis of, 883 

 Bufo ainericanus, xviii 

 Bufo lentiginosus, venous system of 



embryos of, 740 

 Bufo vulgaris, venous system of embryos 



of, 740 

 Bulbourethral glands, 802 

 Bulbus cordis, 750 



division of in developing mammalian 



heart, 759 

 fate of in various vertebrates, 758 

 of developing heart, 747 

 Bunodont teeth, 607 

 Burmester, B. R., 905 

 Burns, R. K. Jr.. 892 

 Burrill, M. W., 892 

 Bursa, inguinal, 6, 13 

 Bursa ovarica, 66, 200 

 Byrnes, E. F., 720 



Caecilia tentaculata, xviii 

 Calamus, of feather, 571 

 Calcareous platelets, of teleost fish scale, 



565 

 Calyx (calyces), definition of, 786 



formation of in mammal (human), 784 



minor, 786 

 Canal, birth, pseudo-vaginal, of the opos- 

 sum, 63 



inguinal, 6 



vaginal, 62 

 Canaliculi, 563 



absence of in cartilage, 659 



of bone, 662 

 Canine teeth, 607 

 Canis familiaris (see Dog) 

 Capillary(ies), air, of chick's lung, 647 



development of, 732 



effect upon skin color, 592 

 Capsular cells, of nervous system, 819 

 Capsule(s), of cartilage cells, 659 



of kidney, formation of, 787 

 Carapace, xix 



formation of in turtle, 569 

 Carbon dioxide, elimination of, 771 



mechanisms for, in developing em- 

 bryo, 903 

 Cardiac region, of stomach, 621 

 Cardinal system, 727 

 Cardinal vein (see Vein, cardinal) 



