584 EMBRYOLOGY OF THE LoWKK VEBTEBRATES 



Archipallium, $1 

 Arcualia, _. 



. il system. 393 

 Auditory organ, 129, 130 



>ke"leton, 343 

 Axial niesoderni, 63 

 Axon, 84 



Balancers, 156, 157 

 Hasilav plate, 310 " 



ostoma 



egg-envelope, 456 



segmentation, 18 



tongue, 151 



Bilateral segmentation, 9 

 Birds. See also under Fowl 



allantois, 471 



amnion, 469 



auditory organ, 129, 130 



Mood and vessels, 368 



bursa fabricii, 192 



carotid arteries, 404 



chondrocranimn, 314, 316 



embryo with amnion, etc., 472, 473 



endoderm, 51 



flight, origin, 453 



heart, 367, 383, 384, 385 



liver, 188 



lung, 162, 163, 165 



mesoderm, origin, 64 



mesonephros, 253, 254 



metanephros, 256 



neonychia, 74 



neural crest, 122 



neurenteric canal, 53 



otocyst, 129, 130 



pancreas, 191 



pecten, 140, 552 



pelvis, 356 



pleural cavity, 202 



practical study, 508-557 



primitive streak, 53, 519, 520 



pronephros, 237 



ureter, 257 



venous system, 425 

 BlastuL-oele, 7 

 Blastoderm, 7 



name, 505 

 Blastomere, 5 

 Blastopore, 31, 496 

 Blastula, 7 

 , 365 



islands. 368 

 :'.68 



in.tl tfills, 156 

 ImiK, 169 



.< reaa, 191 



with grafted limb, 115 

 Bone, 821, 



volution. 



BoneK 



l.-nlal, 33'.! 



Investment 



Bones (c<m/; 



substitution, 335 

 Brain, 85 



anterior end of, 90 



sagittal sections, 88, 93, 146, 147, 149 

 Branchial 



arch, skeleton, 3*18 



buds, 177 

 Buccal cavity, 145 



glands, 152 



solid rudiment, 14S, 149 

 Bufo 



cement-organs, 79 

 Bursa fabricii, 192 



Calcareous bodies of Frog, 132 

 Gallorhynclms 



arcualia, 297 



scales, 323 



teeth, 330 



Carotid arteries, 403 

 Cartilage, 292 

 Cell-continuity, 37, 486 

 Cement-organs of Lung-fish and Amphibians, 

 78, 79, 80, 181 



of Teleostomi, 178 

 Cephalization, 54 

 Cemtodus 



egg, 25 



external form, 436 



limb-skeleton, 350 



lung or air-bladder, 169, 17- 



n ares, 125 



pancreas, 191 



pronephros, 231 



segmentation, 25, 26 



teeth, 324, 330, 331 



thymus, 177 

 Cerebellum, 89 

 Cerebral flexure, 92 

 Cerebrum, 85 

 Chalaza, 515 

 Ghalddes 



placenta, 481 

 Chameleon 



air-sacs, 162 



tooth-succession, 328 

 Cheiropterygium, 356, 357 

 Chelonia ( = Ch<l 



amnion, 466, 467, 468 



gastrular lip, 49 



neurenteric canal, 52 

 c//r/i/(/r<i, amnion, 466 

 < 'liiasma, npti--, S7 



Chondroorantam, 30ti, ;nr 



rlmroid, 139 



lissni' 

 ( 'hroinatophores, SO. 82 



l.ranrliial. 



Ciliation ol i-ctodi-rm. 70 



Olaw, 71 



pad, 74, 75 

 Cl,-|; .-al, 



