466 



INDEX 



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



organs, of lateral line, 141, 156, 157 



Ornithodelphia, ova, 418 



Ornithorhynchus, ova, 418 



ossicles, auditory, 324-325 



ostium (oviducal), 72, 73, 203: 235, 



236, 360: 371; during ovula- 



tion, 378 



otocyst, 140, 149, 150 : 283, 285, 322, 

 322 



ovary, 6, 7, 56 ff., 57: 71, 72: 235, 

 236,363:371,372;- - follicular 

 capsules of , 56, 57: 206: 235, 236, 

 238, 239: 373, 374, 375, 376, 378; 



- stroma of, 205: 361, 362 

 overgrowth, margin of, 247, 249, 258, 



277, 277 

 oviduct, 72, 202, 203 : 235, 236, 360 



ff.: 371, 372 

 ovulatipn, 78: 240 ff.: 377-379; - 



relation to coitus and parturition, 



379 

 ovum, 4, 5, 6, 10, 17: 65, 68 ff., 70: 



232 ff., 233: 372 ff., 373, 376; 



- at time of laying, 70: 232$"., 

 233; - formation of, 236 ff.; 



-human, .373, 373;- -lon- 

 gevity of, 379; number 

 formed, 78; - - polarity of, 4, 5, 

 6, 10, 11, 17: 69, 70, 83; - 

 production of, 236-237, 242;- 

 sizes, 373; - - symmetry, 4, 6, 

 10, 11, 17: 70, 80, 83 ff., 87, 88 ff. 



"ovum," the mammalian blastoder- 

 mic vesicle and ovum, 399 



Owen, 439 



Pabulum, 441 



pancreas, 167, 167: 333, 335, 345 



pancreatic duct, 168 



Pander, nucleus of, 243, 247 



papillae, acustic, 323; - - feather 



286 



parachordse, 210 

 paradidymis, 362 

 paraphysis, 131: 305, 306 

 parencephalon, 304 

 parietal cavity, see exoccelom 

 paroophoron, 363 

 parovarium, 363: 372, 375 

 pars basilaris, 150, 151 

 parturition, 450; relation to 1 



ovulation, 379 

 Patterson, 241, 248 

 Pearl, 241 ; - - and Curtis, 241 

 pecten, 320 



pectoral and pelvic arches, 221 

 penetration path, 79, 80, 81, 84 

 penis, 415, 416, 417 

 Perameles, embryonic membranes, 



419, 420; placentation, 419, 439 



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



periblast, 243; central, 245, 245 ; 



- marginal, 244, 245, 245, 277; 



- nucleation, 246-247 

 pericardial cavity, 166, 174, 175, 180, 



192: 262, 267, 275, 310, 350 ff., 



351 

 pericardio-peritoneal septum, 191- 



192 



perigonadial cavity, 56 

 perilymph, 152: 324 

 perineum, 414 



peripharyngeal bands, 42, 43 

 peripheral nervous system, 135 ff: 



311 ff. 



peritoneal cavity, 352 

 perivitelline, membrane, 5, 9; - 



space, 4, 5, 9, 10 : 80, 81 : 374 

 Peters, 442 



phseochrome tissue, 206-207, 207 

 phallus, 415 ff., 415 

 pharynx, 33 : 118, 159, 160 : 262, 269, 



272, 278, 304, 328 ff., 329 

 Phascolarctos, placentation, 439 

 pig, allantois, 436; amniqn, 392; 



gestation, 369; implantation, 421; 



lutein, 378; notochordal canal, 



398; placentation, 439, 440 

 pigeon, gastrulation, 248 ff.; oocyte, 



239 ; nucleation of periblast, 246- 



247 

 pigment, of ovum, 65, 69, 80, 85, 85 ; 



- of blastula, 97 

 pineal body, 130: 307 

 pinna, 413, 414 



pit, auditory, 282, 283; ol- 



factory, 38, 38: 153, 154, 160: 325: 

 407, 412, 412 ; - - preoral, 25, 32, 

 33, 44^.; - - primitive, 252, 253, 

 257, 260: 398 



pituitary body, 132: 327 



placenta, 391, 425, 430, 437 ff., 

 444, 445, 447, 448 ff., 449; 

 basal plate of, 449; - - classifica- 

 tion, 438 ff.; - cotyledonary, 

 439; - - discoid, 439; - - dis- 

 coidalis, 440, 441 ff.; - - endo- 

 theliochorialis, 440; - - epithelio- 

 chorialis, 440-441 ;- - hsemocho- 

 rialis, 441 jf., 446; - -human, 441 



ff. , 444, 445, 448 ff. , 449 ; loculi 



of, 448; - partial, 440; - 



syndesmochorialis, 441; - - zo- 

 naria, 440; zonary, 439; 



- zono-discoidalis, 440 



Placentalia, 438, 439, 440; - - vera, 

 440; - - embryonic mem- 



branes of, 419 jf. 



placentation, denned, 437 



placode, 138, 139 : 310; - - auditory 

 139, 149; - - facial, 139; - 



