640 



INDEX. 



Amniotic adhesions, 623 



cavity, 68, 101, 115, 137 



fluid, 116 



folds, 100 



in Mammals, no 



suture, 100 



Amoeboid movement of nuclei, 2 

 Amphiaster, 4 



Amphibian embryos, technic for, 629 

 Amphibians, cleavage in, 44 



gastrulation in, 56 



mesoderm formation in, 76 

 Amphicytes, 499 

 Amphioxus, cleavage in, 43 



gastrulation in, 55 



germ layers of, 7 5 



mesoderm formation in, 72 

 Ampullae of semicircular canal, 593, 598 

 Amyelus, 618 

 Anal membrane, 342 



opening, 342 



pit, 342 

 Anaphase, 6 

 Anencephaly, 313, 620 

 Angiomata, 452 



Angle of the mouth, 145, 152, 319 

 Angulus praethalamicus, 541, 547, 554 

 Ankyloblepharon, 620 

 Animal pole (micromere), 56 

 Animalculists, XIII 

 Annular placenta, 134 

 Anophthalmia, 620 

 Anomalies, (see also Terato gene sis) 



of the alimentary tract, 355 



of the diaphragm, 384 



of the large vascular trunks, 286 



of the heart, 285 



of the integumentary system, 451 



of the mesenteries, 384 



of the muscular system, 313 



of the nervous system, 567 



of the omenta, 384 



of the placenta, 134 



of the pericardium, 384 



of the respiratory system, 366 



of the skeletal system, 213 



of the umbilical cord, 135 



of the vascular system, 285 



of the urogenital system, 433 

 Anomalous position of the heart, 285 

 Anterior colliculi, see Anterior corpora 



quadrigemina 

 Anterior (cerebral) commissure, 461 



commissure of the cord, 510, 514 



corpora quadrigemina, 474, 524, 537, 

 540, 586 



horn (ventral gray column), 514 



neuropore, 458 



perforated space, 548 

 Antitragus, 60 1 

 Anthelix, 60 1 

 Aortic arches, 231, 239 

 Aorta, dorsal, 239 

 Aortas, primitive, 239 



Apathy, concerning peripheral nerves, 501 

 Apical body, 14 

 Apolar cells, 491 



Appendage of the epididymis, 420 

 Appendicular skeleton, 202 



anomalies of, 216 



derivation of, 203 



practical suggestions for further study 



of, 219 

 Appendix, 629 



testis, 421 



vermiform, 342 

 Aprosopus, 620 

 Apus, 623 



Aquasductus Sylvii, 463 

 Arch of the aorta, 245 

 Archencephalon, 460 

 Archenteron, 55, 60 



of Amphibians, 57 



of Amphioxus, 55 



of Birds, 67 



of Reptiles, 64 



Archipallial commissure, see Fornix com- 

 missure 

 Archipallium, 475, 512, 544, 548, 553 to 



559 



connections of, 512, 544, 565 

 Arcuate fibers (external), 522 



(internal), 515, 522 

 Arcus aortae, 245 

 Area opaca, 65 



pellucida, 65, 83 



of supplemental cleavage, 64 

 Areolar tissue, 170, 



origin of fibers of, 171 

 Areola, the, 450 

 Area vasculosa, 83, 105, 273 

 Arm, development of, i 54 

 Arrectores pilorum, 445 

 Arteria centralis retinae, 579 



intercostalis suprema, 248 

 Arteries, 243 



allantoic, 243 



anomalies of, 286 



basilar, 246 



brachial, 252 



carotid, 244 



cerebral, 247 



cceliac, 249 



epigastric, 248 



femoral, 252 



gastric, 249 



gluteal, 253 



hepatic, 249 



hyaloid, 579 



hypogastric, 2 50 



iliac, 250 



innominate, 245 



intercostal, 248 



lumbar, 248 



mammary, 248 



median, 251 



mesenteric, 248 



omphalomesenteric, 105, 107, 239 



ovarian, 250 



peroneal, 2 53 



popliteal, 253 



pulmonary, 231, 246 



radial, 252 



renal, 249 



