INDEX. 



395 



Chorion, general account, 1 1 7 



human, at three months, 344 



degeneration of blood in, 3^7 

 ectoderm of, 364 

 histology of, 363 

 laeve, second stage, 350 

 mesoderm of, 356, 364 

 placental, 354 

 trophoderm of, 365 

 vijli, 367 



laeve, denned, 127 



origin, 83 



relation to uterus in ungulates, 113 

 Chromosome, accessory, 28 



number in segmentation nucleus, 41 

 Cinerea, 263, 270 



defined, 74 

 Cisterna chyli, 105 

 Cochlea, origin, 78 

 Coelom, defined, 18 



double, 8 1 



embryonic, 84 



of the head, 87 



origin, 81 



pig, 9.0 mm., 255 

 12 .o mm., 301 



umbilical, 311 



ventral, 87 



vertebrates, 5 

 Commissure, ganglionic, 262 



posterior, 335 



superior, 335 

 Copper hematoxylin, 384 

 Cord, umbilical, pig, 17.0 mm., 310 



sexual, 322 

 Corona radiata, 34 



Corpora quadrigemina, pig, 12.0 mm., 292, 

 Corpus luteum, 35 



striatum,' 329 

 Costal processes, 305, 321 

 Counterstains, 381 

 Cutis, anlage, 266 



pig, 20. o' mm., 321 

 Cutis-plate, 86 

 Cytomorphosis, 1 1 



Decidua caduca, defined, 124 

 cavernous layer of, 351 

 compact layer of, 351 

 defined, 124 



reflexa, at three months, 343 

 at four months, 344 

 atrophy, 127 



Decidua reflexa, defined, 124 

 disappearance, 343 

 first stage, 349 

 serotina, at seven months, 345, 357 



defined, 124 

 subchorialis, 359 

 vera, at three months, 344 

 defined, 124 

 first stage, 346 

 second stage, 350 

 Decidual cells, development, 348 



mature, 359 

 Deck-plate, 72 



pig, 9.0 mm., 257 

 Degeneration, hypertrophic", 15 

 Dermatome, 86 

 Development, arrest of, 91 

 embryonic, 16 

 larval, 16 

 summary of, 10 



Diaphragm, pig, 24.0 mm., 337 

 Diencephalon, origin, 74 

 Differentiation, 13 



two types of, 14 

 Digestive canal, general account, 59 



of vertebrates, 5 

 Dipnoi, 8 



Discus proligerus, 34 

 Diverticulum, Meckel's, 57 

 Dorsal furrow, 68 



roots, 270, 283 

 Ducts, Miillerian, no, 317 

 urogenital, no 

 Wolffian, no 

 chick, 212 

 pig, 12 . o mm., 287 

 17.0 mm., 309 

 20. o mm., 318 

 Ductus arteriosus, 91 

 defined, 101 

 Cuvieri, defined, 103 

 endolymphaticus, 299 



origin, 78 

 thoracicus, 105 



venosus Arantii, pig, 9.0 mm., 252 

 Dyads, 37 



Ebauche, 9 

 Ectoderm, chick, 217 



defined, 18 

 Ectoglia, 263, 314 



defined, 74 

 Elasmobranchs, 8 



