662 



Double organisms, 45. 

 Downy hair, 524. . 

 Ductus Eotalli, 575, 587. 

 -- cochlearis, bony, 503. 



cochlearis, membranous, 494, 497. 



Cuvieri, 567. 



endolymphaticus, 493. 



lingualis, 320. 



thyroideus, 320. 



thyreoglossus, 318. 



venosus Arantii, 585. 



vitello-intestinalis, 205. 

 Dumb-bell figure of egg, 52 r 



Dural sheath of the optic nerve, 486. 



Ear, inner, 491. 



middle. 508. 



outer, 509. 

 Ear-capsule see Auditory. 

 Ear-wax glands, 528. 

 Ectoblast, 86. 

 Ectoderm, 86. 



Egg, 7. 



abortive, 37. 



alecithal, 12. 



animal pole of, 11. 



centrolecithal, 12, 66. 



compound, 18. 



heterolecithal, 28. 



holoblastic, 57, 



homolecithal, 28. 



meroblbstic, 57, 66, 197. 



of Amphibia, 14, 58. 



of Ascaris, 41, 55. 



of Birds. 15, 62. 



of Echinoderms, 7, 38, 51. 



of Mammals, 12. 



of Man, 13. 



telolecithal, 12. . 

 Egg-balls see Egg-nests. 

 Egg-cell see Egg. 

 Egg-envelopes, 9 see also Vitelline 



membrane and Fretal mem- 

 branes. 



Egg-membranes see Vitelline mem- 

 brane and Postal membranes. 



Egg-nests, 375, 376. 



Egg-nucleus, 32. 



Egg-sacs, 376. 



Egg-tubes. 376. 



Egg-yolk, 7. 



Embryonic area, 193. 



spot, 102. 

 Enamel-germ, 309. 

 Enamel-membrane, 306, 310. 

 Enamel-organ, 310. 



Endochondral ossification, 599, 616. 

 Endolymph of the ear, 492. 

 Enteroccel, 108. . 

 Entoblast, 86, 108, 149 see also Ento- 



derm. 

 Entoderm, 86, 108, 149 see also Ento- 



blast. 



Epicondyles, 644. 

 Epidermis, 520. 



primitive (Hornblatt), 520, 450, 



469. 



Epididymis, 388. 

 Epigenesis, 24. . 

 Epiphysis cerebri see Pineal body. 



of bone (epiphysial nuclei), 642. 

 Epistropheus (Axis), 603. 

 Epithelio-muscular cells, 346. 

 Epitrichium, 520. 

 Eponychium, 527. 



Epobphoron, 394. 

 Eruption of the teeth, 311. 

 Ethmoid bone, 619. 



region of the skull, 608. 

 Ethmoidal cells, 518. 

 Eustachian tube, 511. 



j Extremities, muscles of, 636. 



I nerves of, 637. 



| skeleton of, 635, 640. 



Evolution, theory of, 23. 



Eye, 467. 



chambers of, 477. 

 Eyelid, 486. 

 Eye-membranes. 476. 

 Eye-muscles, 352. 



F. 



Enamel-pulp, 310. 

 Endocardium. 544. 



Fallopian tube. 395. 



Falx cerebri, 422, 439. 



Fat glands, 528. . 



Femur, 644. 



Fenestra ovalis of temporal bone, 613. 

 j Fertilisation, history of, 45. 

 I process of, 37, 41. 



theory of, 44. 



Fibrin, canalised, of the placenta, 261. 



268. 



I Fibula, 644. 

 Filium terminale, 420. 

 Fimbria, 445. 

 Fissura calcarina, 441, 445. 



cerebri transversa, 445. 



choroidea (brain), 441, 443. 



choroidea (optic cup), 483 



Glaseri, 621. 



hippocampi, 441, 443. 



parieto-occipitalis, 441. 



petrotympanica, 621, 626. 

 Foetal membranes, deciduous, 235, 243. 



of Mammals, 221. 



