INDEX. 



483 



Polar bodies, 1 7 ; of ova of mam- 

 mals, 311 

 Polyootyledonary placenta, 359 ; 



histology of, 360 

 Pons Varolii of birds, 369; of 



mammals, 370 

 Position of embryo oMck of third 



and fourth days,, 113 — n6 

 Postanal gut, of chick, 175; of 



rabbit, relation of, to primitive 



streak, 339 

 Posterior nares, chick, 202 

 Potassium bichromate, 460 

 Premaxilla bones, chick, 246 

 Prenasal bones of chick, 246 

 Presphenoid region, chick, 240 — 



246 

 Primitive 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 infundibmi, chick, 121 

 ProctodsBum of chick, 175; of 



mammal, 422 

 Pronephros, 218 



Pronucleus, female, 17; male, 17 

 Prootic, chick, 246 

 Protovertebrse (see Mesoblastic 



somites) 

 Pterygo-palatine bar, chick, 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 

 Pyramids of cerebellum, 368 



Quadrato-jugal bones, 246 

 Quadrate, chick, 243 



E 



Babbit embryo, growth of, 327- 



334; placenta of, 353 

 Badius, chick, 234 



Eat, inversion of the layers in, 



341 

 Eecessus labyrinthi, mammaUa, 



39°— 398 

 Eecessus vestibuli (see Agueductus 



vestibuli) chick, 203 

 Eespiration of chick, 303 ; of third 



day, no 

 Eete vasculosum, mammalia, 414 

 Eetina, chick, 142, 144 — 146 

 Eibs, chick, 234; mammalia, 405 

 Eodentia, placenta of, 353 

 Eods and cones of retina, chick, 



146 

 Eostrum, chick, 246 

 Euminants' placenta, histology of, 



360 



gacculus hemisphericus, mam- 

 malia, 390 — 398 

 Salivary glands, mammalia, 420 

 Scala media (see Cochlear canal) 

 Scala tympani, maromaUa, 395 — 



397 



Scala vestibuli, mammalia, 395 — 



397 



Scapula of chick, 234 



Sclerotic coat of eye of chick, i+i 



Sclerotic capsules, mammalia, 405 



Scrotum, mammalia, 416 



Sebaceous glands, 366 



Secondary optic vesicle (see Optic 

 cup) 



Sections, method of cuttmg, 434 

 — 436 ; mounting of, 436 



Segmentation: of hen's egg, 18 

 — 24; meroblastio, 18; of mam- 

 malian ovum, 312 — 314; of 

 hen's egg to observe, 458; of 

 mammalian ovum to observe, 

 461 



Semicircular canal: of chick, 

 158 ; mammalia, 390 — 398 



Semi-lunar valves, cluck, 258 



Sense capsules of chick, 211 — 312 



Septum lucidum, mammalia, 383 



Septnm-nasi, chick, 246 



Serous membrane of chick, 32 — 

 41 



