478 



INDEX. 



Graafian follicle, chick, 222, 310 

 Grey matter, of spinal cord of 

 chick, 253; of brain of mam- 

 malia, 387 



Growth of embryo of chick, 70 

 Guinea-pig, structure of blasto- 

 derm of, 323; relation of em- 

 bryonic layers of, 323; inver- 

 sion of the layers in, 341 



H 



Haematoxylin, to make and use, 

 429 



Hairs, 365 



Hardening reagents, 425 428; 

 picric acid, 425 ; corrosive sub- 

 limate, 426 ; osrnic acid ; 427 ; 

 chromic acid, 427 ; absolute 

 alcohol, 428 ; the necessity of, 

 428 



Head of chick, 200 ; of rabbit, 

 331 



Headfold of chick, 2729, 33 37; 

 16 to 20 hours, 60 ; 20 to 24 

 hours, 66 ; of second day, 77 ; 

 of mammal, 329 



Heart of chick, 229 230, 256 

 264; formation of, 82 89, 102 ; 

 beating of, on second day, 89 ; 

 of third day, 167; auricles, 

 2 p 262 ; ventricles, 260 262 ; 

 auricular septum, 257 262; 

 ventricular septum, 2 57 ; canalis 

 reuniens, 257 259; bulbus ar- 

 teriosus, 257 262 ; foramen 

 ovale, 262 264 ; Eustachian 

 valve, 263 264; circulation in, 

 263 264; structure of, 287 

 289, 293' 297 ; resume of, 299 



303 



Heart of mammals, 329; struc- 

 ture of, 331 ; formation of, 406 ; 

 comparison of, with birds, 407 

 Hemiazygos vein, mammalia, 412 

 Hen: formation of albumen in, 

 1 6 ; ovarian follicle of, 12 15 ; 

 mesovarium of, 1 1 ; ovary of, 

 1 1 ; ovarian ovum of, 1 1 , 15; 

 oviduct of, 15; epoophoron, 

 paroophoron and oviduct, 224 



Hen's egg, albumen of, 3, 16; 

 blastoderm, 7 10, 26, 27 : 

 chalazae, 4 ; cicatricula, 4 ; im- 

 pregnation of, 17 ; laying of, 

 17; polar bodies of, 17; seg- 

 mentation of, 1 8 24; vitelline 

 membrane of, 4, 13 15 ; yolk 

 of, 4 7 ; chorion of, 47 ; shell 

 of, i, 16; irregular develop- 

 ment of, 48, 49 ; segmentation, 

 cavity of, 50 



Hepatic cylinders of chick, 1 79 ; 

 circulation of chick, 227 ; veins, 

 288290 



Hind brain: of chick, 100 ; of 

 rabbit, 329 ; of mammals, and 

 birds, 367 370 ; medulla of, 

 367 ; cerebellum of, 367 370 



Hippo-campus major, mammalia, 

 380 



Hippo-campal fissure of cerebrum 

 of mammalia, 385 



Histological differentiation, in 

 chick, 269 273 ; of epiblast, 

 269, 271; of hypoblast, 269; 

 of mesoblast, 269 



Histology of placenta, 359 



Holoblastic segmentation, 307 



Human embryo: villi of, 335; 

 early stages of, 335 ; allantois 

 of, 336 340; yolk-sac of, 336 

 340 ; medullary plate of, 337 ; 

 amnion of, 338 340; cranial 

 flexure of, 338 340; limbs of, 

 339; body flexure of, 339 

 340; face of, 340; relation of, 

 with other mammals, 341 ; pla- 

 centa of, 355 



Human ovum, size of, 307 



Human placenta, histology of, 

 363 ; derivation of, 364 



Humerus, chick, 234 



Hyaloid membrane, chick, 144, 

 146 



Hyoid arch of chick, 243 245 ; 

 of rabbit, 334; of mammalia, 

 403404 



Hyoid bone of chick, 245 



Hypoblast of chick : formation of, 

 2 5> 5 1 ' 59 > derivation of, 26; 

 of area opaca, 65 ; histological 



