INDEX. 



647 



Ducts, Miillerian, 402, 417, 421 



of the epididymis, 420 



oviduct, 418 



pronephric, 387, 388 



reuniens, 596 



Santorini's, 352 



seminiferous, 405 



Steno's, 329 



thoracic, 278 



thyreoglossal,, 333 



utriculosaccular, 596 



Wharton's, 329 



Wirsung's, 352 



Wolffian, 389 

 Ductule, aberrant, 421 



efferent, 421 

 Ductus arteriosus, 234, 246 



choledochus, 347 



pleuro-pericardiacus, 374 



venosus, 263, 349 

 Duplicate monsters, 605 



asymmetrical duplicity, 612 



Marchand's scheme of, 605 



symmetrical duplicity, 606 



teratoid tumors, 606 



true parasitic duplicity, 612 

 Duval, concerning formation of primitive 



streak, 65 

 Duodenum, the, 338, 339 



change of position of, 382 

 Duplicity incomplete, 610 

 Dyads, 17 

 Dynamic center, 8 



Ear, 457, 464, 469, 474, 513, 592 

 anomalies of, 601, 621 

 cochlea, 467 



Corti's organ, 467, 474, 565-, 597 

 external, 592, 600 

 internal, 592 

 labyrinth, 467 

 middle, 592, 599 



practical suggestions for study of, 

 603 

 Ear, inner, 



acoustic nerve, 598 

 atrium, 593 

 auditory pit, 592 



placode, 592 



vesicle (otocyst), 592, 593 

 cells of, 598 

 cochlear pouch, 593 

 ducts of, 596 



endolymphatic appendage of, 593 

 fenestra cochlear (rotunda), 597 



vestibuli (ovalis), 597 

 membrana tectoria, 598 

 organ of Corti, 597 

 perilymph, 596 

 perilymphatic space, 596 

 saccule, 596 

 scala media, 596, 597 



tympani, 596, 597 



vestibuli, 596, 597 

 semicircular canals of, 593 

 spiral lamina, 597 

 utricle, 596 



Ear, 



inner, vestibular membrane (of 

 Reissner), 597 



vestibular pouch, 593 

 Ear, middle, 599 



Eustachian tube, 600 



incus, 599 



malleus, 599 



mastoid cells, 600 



stapes, 599 

 Ear, outer, 600 



antitragus, 601 



anthelix, 601 



auricle, 600 



external auditory meatus, 600 



lobule, 601 



helix, 601 



tragus, 601 



tubercles of, 601 



tympanum, 600 

 Ectoderm (epiblast), 55, 137 



formation of, 55 



in Amphibians, 58 



in Amphioxus, 55, 56 



in Birds, 64, 66 



in frog, 60 



in Mammals, 68 



in Triton, 57, 58 



in Reptiles, 62 



practical suggestions for study of, 96 

 Ectopia cordis, 215, 285, 384, 622 

 Ectopia vesicas, 622 

 Ectopia viscerum, 622 



of the kidneys, 433 

 Ectoplasm, 174 

 Ectopic gestation, 3 1 

 Edinger, concerning the oral sense, 475 

 Effectors, 455, 458, 464 

 Efferent ductules, 420 



peripheral nerve fibres, 459. 



peripheral neurones, 454, 464, 493 

 to 496 



root fibers, 493 

 Egg (see also ovum), 10 



cleavage in hen's, 46 



diagram of hen's, 13 

 Egg nests, 411 



cords, Pfluger's, 411 



protoplasm, n 

 Eggs, alecithal, 42, 43 

 ''centrolecithal, 42, 45 

 ■ telolecithal, 42, 44, 46 

 Eigenmann, concerning sex cells, 407 

 Ejaculatory duct, 420 

 Embedding, with celloidin, 633 



paraffin, 634 

 Embryos, abnormal, 1 58 



age and length of, 155 



amphibian, technic for, 629 



chick, technic for, 630 



conclusions of His, concerning age 

 of, 155 



gross anomalies of, 1 59 



human, technic for, 159, 631 



Mall's formula? for deducing age of, 



mammalian, 

 normal, 1 58 



technic for, 6?o 



