INDEX 



Accessory auditory apparatus : Frog, 143-144 ; Chick, 281 ; Babbit, 397-399 ; 



Man, 544 

 Accessory genital organs : Chick, 319-320 ; Babbit, 426 ; Man, 592-596 

 Accessory thyroid body: Frog, 182 ; Chick, 286 

 Acetabulum : Frog, 213 

 Adolescent period : Amphioxus, 87-89 

 Adrenal body : Chick, 320 

 After-birth: Man, 615 



Age of embryo, estimation of : Chick, 223 ; Babbit, 352 ; Man, 467-470 

 Air cell : Babbit, 408 

 Air sac : Chick, 292 

 Alas nasi : Man, 498 

 Alecithal eggs : 7, 1 7 

 Alimentary canal : Amphioxus, 69-71 ; Frog, 105-109, 145-157 ; Chick, 281- 



296 ; Babbit, 399-404 ; Man, 544-565 

 Allantoic stalk : Man, 482, 484, 496, 599, 602 

 Allantois: Chick, 227, 246-247, 294-296; Babbit, 370, 435; Man, 484, 485, 



545 

 Amnion: Chick, 245-247 ; Babbit, 369-370 ; Man, 477, 479, 496, 598-599 

 Amphioxus, 37-89 : structure of adult, 37-44 ; morphological importance, 

 44-46 ; general account of development, 46-48 ; early em- 

 bryonic development, 48-61 ; condition at hatching, 61 ; 

 later embryonic development, 61-72 ; condition at close of 

 embryonic period, 72-73; larval period, 73-87; adolescent 

 period, 87-89 ; bibliography, 89 

 Anatomy : Amphioxus, 37-44 

 Anterior cerebral vesicle : Chick, 252 ; Babbit, 374 

 Anterior commissure of brain : Babbit, 379 ; Man, 518 

 Anterior gut diverticula : Amphioxus, 70 

 Anterior nares : Frog, 136 ; Chick, 275, 289 ; Man, 498 

 Antihelix : Man, 500 

 Antitragus : Man, 500 

 Antrum : Man, 538 

 Anus : Amphioxus, 71 ; Frog, 149 ; Chick, 291-292 ; Babbit, 404 ; Man, 546, 



549 

 Anus of Kusconi: Frog, 107, 110 

 Aorta, cardiac : Amphioxus, 41, 71 



dorsal: Amphioxus, 42; Frog, 169, 179-182; Chick, 307; Babbit, 417 ; 

 Man, 573, 576-578 

 Aortic arch: Frog, 178-179; Chick, 303-307; Babbit, 416-417; Man, 573- 



576 

 Aortic trunk: Babbit, 416 



Appendicular skeleton : Frog, 212-215 ; Chick, 332-335 ; Babbit, 433 

 Apteria : Chick, 337 

 Aqueous humour : Chick, 280 



