456 



INDEX 



(Amphioxus, pages 1-61; frog, 62-228, 



area, opaca, 233, 248, 262, 275 : 394 ; 



pellucida, 233, 247, 252, 255, 



275: 394; vasculosa, 262, 



255, 256, 256, 275-277, 277, 



291: 432; vitellina, externa 



and interna, 262, 255, 275-277, 

 277 



arterial system, 179 ff., 180, 181, 

 182, 184: 291, 340 ff., 341, 348: 

 405 



artery, allantoic, 297; see aorta; 



basilar, 182 ; branchial, 



40: 179 ff., 180, 181, 181, 182; 



carotid, external and in- 

 ternal, 180, 182, 183: 291, 329, 

 341, 341, 342, 348; - - caudal, 



348 ; cerebral, 182 ; cce- 



liac, 343, 348; commissural, 



182, 183; cutaneous, 182, 



185; genital, 343; inter- 



somitic, 280; lingual, 182, 



183; mesenteric, 343, 348; 



of mandibular and hyoid 



arches, 179, 182, 183: 275, 278, 



340, 341 ; omphalomesenteric, 



343: 432, 432; palatine, 182; 



pharyngeal, 182, 183; 



pulmonary, 182, 184, 184: 329, 



338, 339, 341, 342, 348; 



renal, 343; sciatic, 343, 348; 



segmental, 280, 342; 



subclavian, 184: 341, 342, 343, 



348; umbilical, 343, 348: 



435, 436; vertebral, 184; 



vitelline, 273, 283, 286, 290, 



291, 294, 338,343:432, 432 



articulation, jaw, 216 



asymmetry, of Amphioxus larva, 



49 ff. 



atrial cavity, 46 ff., 47, 48 

 atriopore, 47, 49 

 atrium, see atrial cavity, auricle 

 auditory, capsule, 211 ff., 212, 214; 



organ, rudiment, 121: 282, 



283, 285, 321; organ, later 



history, 149 #., 150: 322 jf., 322; 



ossicles, 324325; pit, 



282, 283; sac, 140, 149, 



150:321^., 322, 322, 329 



auricle, 176, 177: 283, 285, 291, 310, 



337, 339, 342, 348, 365 

 auriculo-ventricular aperture, 338 

 axis, of chick embryo, 243 

 axons, of retinal cells, 320; of 



spinal nerves, 311 



von Baer, 299: 376 



basal, ganglia, 306; plate, of 



cranium, 211, 212, 213; 



of placenta, 449 



: chick, 229-367; mammal, 368-454.) 



basilar chamber, 150, 151 



bat, amnion, 424; blastodermic 



vesicle, 390; cleavage, 381; noto- 



chordal canal, 397; placentation, 



439, 440; trophoblast, 389 

 beak, 159: 328 

 beating, of heart, commencement of, 



339 



belly stalk, 399, 400, 429, 430, 446 

 between-brain, 129, 131, 133: 283, 



303, 304, 306 #., 310 

 Bidder's organ, 167 

 bile duct, 167: 333; 



common, 333 



birth, 369 

 bladder, gall 166, 167, 167: 333; 



urinary, 170, 201 



blastoccel, 14, 16 : 93, 94, 96, 98, 102 : 



245, 245, 247, 248 

 blastoderm, 238, 239, 240, 242-243; 



at 30 hours, 275; - - at 



time of egg laying, 232, 233 ; - 



growth of, 247 ff.; unincu- 



bated, 250 



blastodermic vesicle, 382, 383 ff., 



384, 385, 386, 390, 399; , 



growth of, 384; hu- 

 man, 399 



blastopore, 16, 18 ff.; 98, 101 ff., 

 102, 118, 119, 120: 249 ff., 249, 



258, 258: 397-398; closure 



of, 103, 120; position of, 



105, 105 



blastula, 12, 14, 16: 92, 93 ff., 94, 

 96, 247, 247, 248: 383; sym- 

 metry of, 96 



blood, cells, 266, 273; corpus- 

 cles, 179: 350; islands, 178, 



179: 252, 255, 256, 271, 272, 277; 



origin, 178-179, 178; 



vessels, 46: 271 ff., 273, 277; 



vessels, allantoic, 280, 299: 435, 



436; branchial, 179 .ff., 



180; origin, 178-179; 



rudiments in Amphi- 

 oxus, 31; yolk-sac, 290, 



291 : 432-433, 432 ; see also artery, 

 vein 



Blount, 246, 247 



body, cavity, 124, 170, 173: 350 ff., 



352; see also coelom; form 



of human embryo, 399 ff.; 



Malpighian, 200, 201, 205: 356, 



357, 359, 362; pineal, 130: 



307; pituitary, 132: 327; 



post-branchial, 331, 331 ; 



pseudothyroid, 164; supra- 



pericardial, 163, 164; ultimo- 

 branchial, 163, 164; vitreous, 



148: 320; wall, 282; 



