INDEX 



Air sacs : Chick, 209 

 Air space : Chick, 90 

 Albumen of egg : Chick, 90. 

 Alimentary canal : Frog, 45-51 ; 



Chick, 203-212 

 Allantois : Chick, 161, 263 

 complete history of : Chick, 



169-172 

 Amnion: Chick, 117, 132, 160- 



161 

 entire history of: Chick, 167- 



169 



Amniotic cavity: Chick, 168 

 Angioblast: 147 



Anterior chamber : Chick, 183 

 Aortic arches : Frog, 62 ; Chick, 

 145, 243 ; (see Branchial 

 blood vessels) 

 fate of : Chick, 246 

 Archenteron : Frog, 25 

 Archinephric duct ; Frog, 78 

 Area opaca : Chick 104 

 Area pellucida : Chick, 104 

 Artery, allantoic : Chick 248 

 carotid : Frog, 61 ; Chick, 244 

 lingual : Chick, 244 

 mandibular : Chick, 244 

 pulmonary : Chick, 245 

 subclavian : Chick, 245 

 umbilical : Chick (see Allan- 

 toic artery) 



vitelline : Chick, 145, 248 

 Auditory capsules : Frog, 77 ; 



Chick, 267 



Auditory pits : Chick, 141 

 Auditory vesicle : Frog, 43 ; 

 Chick, 185 



Auricle : Chick, 156 

 Auricular chamber : Frog, 61 



Basilar plate : Frog, 75 ; Chick, 



226 



Beak : Chick, 281 

 Bladder : Frog, 50 

 Blastoderm : Chick, 91, 103, 163 



section of : Chick, 121 

 Blastomere : Frog, 18 

 Blastopore : Frog, 22, 46 

 Blastula: 100 

 Blood : Chick, 146-151 

 corpuscles : (see Blood) 

 islands : Chick, 147 

 vessels : Frog, 56-69 ; Chick, 



146-151 

 Body-cavity : Frog, 30, 69-72 ; 



Chick, 132 

 Brain : Frog, 36-40 ; Chick, 154, 



172-173 

 Branchial arch : (see Visceral 



clefts and folds) 

 Branchial blood vessels : Frog, 



62 

 Branchial cleft : (see Visceral 



clefts and folds) 

 Branchial folds : (see Visceral 



clefts and folds) 

 Bulbus arteriosus : Chick, 145, 



156 



Carotid arch : Frog, 67 

 Carotid gland : Frog, 68 

 Cartilage bones : Chick, 267 

 Centra : Frog, 73 



285 



