456 



INDEX 



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



area, opaca, 233, 248, 252, 275: 394; 

 - pellucida, 233, 247, 252, 255, 

 275: 394; vasculosa, 252, 



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

 291 : 432 ; - - vitellina, externa 

 and interna, 252, 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; 



- segment al, 280, 342; 

 subclavian, 184: 341, 342, 343, 

 348; - - umbilical, 343, 348: 

 435, 436; vertebral, 184; 



- vitelline, 273, 283, 285, 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 ff., 150: 322 ff., 322; 



- ossicles, 324-325; - - pit, 

 282, 283; sac, 140, 149, 

 150: 321 jf., 322,322,329 



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



337, 339, 342, 348, 355 

 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 ff., 310 

 Bidder's organ, 167 

 bile duct, 167: 333; - 



common, 333 



birth, 369 

 bladder, gall 166, 167, 167: 333; 



- urinary, 170, 201 

 blastocoel, 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, 256, 273; corpus- 

 cles, 179: 350; - - islands, 178, 

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



origin, 178-179, 178; - 



vessels, 46: 271.0'., 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; 



