628 



INDEX 



Alopecia, 415 



Alternation of vertebrae and myo tomes, 148, 



264 



Amelus, 610 

 Amnion, 100, 101, 102, 105, 108, no, in 



formation from amniotic fold, 565 



in Birds, 563 



in Mammals, 572, 574 



in man, 579 



in Reptiles, 563 



rhythmical contractions of, 566, 582 

 Amniotic adhesions, 619 



cavity, 89, 90, 92, 96, 100, 101, 104, 105, 

 108, 565, 579 



fluid, 580 



folds, 564 



in Mammals, 574 



suture, 564 

 Amphicytes, 462 

 Amphimixis, 33 

 Amphioxus, cleavage in, 35 



early development of, 35 



gastrulation in, 38, 39 



mesoderm formation in, 42 



ovum of, 35 



Ampullae of semicircular canal, 553, 558 

 Amyelus, 614 

 Anal membrane, 310 



opening, 310 



pit, 58, 63, 310 

 Anencephaly, 282, 616 

 Angioblast, 238 

 Angiomata, 415 

 Angle of the mouth, 119, 287 

 Angulus praethalamicus, 507, 510, 517 

 Ankyloblepharon, 616 

 Animalculists, XIII 

 Annular placenta, 598 

 Anomalies, see also Teratogenesis 



of the alimentary tract, 323 



of the diaphragm, 351 



of the large vascular trunks, 256 



of the heart, 254 



of the integumentary system, 414 



of the mesenteries, 352 



of the muscular system, 282 



of the nervous system, 530 



of the omenta, 352 



of the pericardium, 352 



of the placenta, 598 



of the respiratory system, 334 



of the skeletal system, 177 



of the umbilical cord, 599 



Anomalies of the urogenital system, 399 



of the vascular system, 254 

 Anomalous position of the heart, 254 

 Anophthalmia, 616 

 Anterior colliculi, see Anterior corpora quad- 



rigemina 

 Anterior (cerebral) commissure, 424 



commissure of the cord, 473, 474 



corpora quadrigemina, 437, 487, 500, 503, 

 546 



horn (ventral gray column), 477 



neuropore, 421 



perforated space, 511 

 Anthelix, 561 

 Antitragus, 561 

 Aorta, dorsal, 187, 209 

 Aortae, primitive, 187 

 Aortic arches, 188, 210 

 Apdthy, concerning peripheral nerves, 464 

 Apolar cells, 454 



Appendage of the epididymis, 386 

 Appendicular skeleton, 166 



anomalies of, 180 



derivation of, 167 

 Appendix testis, 391 



vermiform, 310 

 Aprosopus, 616 . 

 Apus, 619 



Aquaeductus Sylvii, 426 

 Arch of the aorta, 211 

 Archencephalon, 423 

 Archenteron, 



in Amphioxus, 38, 40 



in the chick, 70, 71, 75 



in the frog, 56, 57 



Archipallial commissure, see Fornix com- 

 missure 

 Archipallium, 438, 475, 507, 511, 516 to 522 



connections of, 475, 507, 528 

 Arcuate fibers (external), 485 



(internal), 478, 485 

 Arcus aortae, 211 

 Area opaca, 68, 72, 73, 74, 79 



pellucida, 68, 72, 73, 74, 79 



vasculosa, 79, 186, 569 

 Areola, the, 413 

 Areolar tissue, 135 

 Arm, 115, 121 

 Arrectores pilorum, 408 

 Arteria centralis retinae, 539 

 Arteries, 209 



allantoic, 191, 210 



anomalies of, 256 



