INDEX. 



483 



Polar bodies, 1 7 ; of ova of mam- 

 mals, 311 

 Polycotyledonary placenta, 359 ; 



histology of, 360 

 Pons Varolii of birds, 369 ; of 



mammals, 370 

 Position of embryo chick of third 



and fomth days, 113 116 

 Postanal gut, of chick, 175; of 



rabbit, relation of, to primitive 



streak, 329 

 Posterior nares, chick, -202 

 Potassimn bichromate, 460 

 Premaxilla bones, chick, 246 

 Prenasal bones of chick, 246 

 Presphenoid region, chick, 240 



246 

 Pi-imitive groove of chick, 56 ; of 



rabbit, 320 

 Primitive streak of chick, 52 62 ; 



of chick from 20 to 24 hours, 



70; of rabbit, 319 

 Processus infundibuli, chick, 1 2 1 

 Proctodeum of chick, 175; of 



mammal, 422 

 Pronephros, 218 



Pronucleus, female, 17; male, 17 

 Prootic, cliick, 246 

 ProtovertebriB (see Mesoblastic 



somites) 

 Pterygo-palatme bar, ohick, 243 

 Pterygoid bones, chick, 246 

 Pubis, chick, 234 

 Pulmonary veins of chick, 228, 



289 290 

 Pulmonary arteries of chick, 294 



298; mammalia, 407 

 Pupil, chick, 142 

 Pyi-amids of cerebellum, 368 



Q 



Quadrato-jugal bones, 246 

 Quadrate, chick, 243 



E 



Eabbit embryo, growth of, 327 



334; placenta of, 353 

 Radius, chick, 234 



liat, inversion of the layers in, 



341 

 Recessus labyrinthi, mammaha, 



390398 

 Piecessus vestibuli [see Aqueductus 



vestibuli) chick, 203 

 Eespiration of chick, 303 ; of third 



day, no 

 Eete vasculosum, mammalia, 414 

 Retina, chick, 142, 144 146 

 Ribs, chick, 234; mammalia, 405 

 Rodentia, placenta of, 353 

 Rods and cones of retina, chick, 



146 

 Rostrum, chick, 246 

 Ruminants' placenta, histology of, 



s6o 



Sacculus hemisphericus, mam- 

 malia, 390398 

 Salivary glands, mammalia, 420 

 Scala media [see Cochlear canal) 

 Scala tympani, mammaha, 395 



397 . . 

 Scala vestibuli, mammalia, 395 



397 



Scapula of chick, 234 



Sclerotic coat of eye of chick, 141 



Sclerotic capsules, mammalia, 405 



Scrotum, mammalia, 416 



Sebaceous glands, 366 



Secondary optic vesicle [see Optic 

 cup) 



Sections, method of cutting, 434 

 436 ; mounting of, 436 



Segmentation: of hen's egg, 18 

 24; meroblastic, 18; of mam- 

 malian ovum, 312 314; of 

 hen's egg to observe, 458; of 

 mammaUan ovum to observe, 

 461 



Semicircular canal : of chick, 

 158; mammalia, 390398 



Semi-lunar valves, chick, 258 



Sense capsules of chick, 211 212 



Septum lucidum, mammalia, 383 



Septum-nasi, chick, 246 



Serous membrane of chick, 32 

 41 



