INDEX. 



483 



Polar bodies, 17 ; 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 fourth days, 113 — 116 

 Postanal gut, of chick, 175 ; of 



rabbit, relation of, to primitive 



streak, 329 

 Posterior nares, chick, 202 

 Potassium bichromate, 460 

 PromaxiUa 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 infundibuli, 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 

 Pulmonaryarteries of chick, 294 — 



298 ; mammaUa, 407 

 PupH, chick, 142 

 Pyramids of cerebellum, 368 



Q 



Quadrato-jugal bones, 346 

 Quadrate, chick, 243 



B 



Kabbit embryo, growth of, 327 — 



334; placenta of, 353 

 Radius, chick, 234 



P. &B. 



Bat, inversion of the layers in, 



341 



Becessus labyrinthi, mammalia, 



390—398 

 Becessus vestibuli {see Aqueductus 



vestibuli) chick, 203 

 Bespiration of chick, 303 ; of third 



day, 110 

 Bete vasoulosum, mammalia, 414 

 Betina, chick, 142, 144 — 146 

 Bibs, chick, 234; mammalia, 405 

 Bodentia, placenta of, 353 

 Bods and cones of retina, chick, 



146 

 Bostrum, chick, 246 

 Buminants' placenta, histology of, 



360 



Sacculus hemisphericus, mam- 

 malia, 390 — 398 

 Salivary glands, mammalia, 420 

 Soala media {see Cochlear canal) 

 Scala tympani, mammaUa, 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, (8 

 — 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, chick, 258 



Sense capsules of chick, 211 — 212 



Septum lucidum, mammalia, 383 



Septum-nasi, chick, 246 



Serous membrane of chick, 32 — • 

 41 



31 



