666 



INDEX. 



Mid-brain vesicle, 430. 

 Middle ear, 508. 



plate, 356. 



Middle germ-layer, 106, 113. 



of Amphibia, 117. 



of Amphioxus, 1 10. 



of Birds, 120. 



of Chaetognatha, 108. 



of Mammals, 110, 129. 



organs of, 341. 

 Milk-glands, 528. 

 Milk-teeth, dentition, 309, 312. 

 Modiolus, 502. 



Morgagni's hydatid, 395. 



Morula, 56, 68. 



Mouth, development of the permanent, 



283. 



Mulberry-sphere, 56, 68. 

 Miillerian duct, 369, 386, 395. 

 Multiple organisms, 45. 

 Muscle-layers of Amphioxus and Cy- 



clostomes, 343. 

 Muscle-plate, 174, 348. 

 Musculature of the extremities, 350. 



of the head, 352. 



voluntary, 342, 346. 

 Musculus cremaster, 392. 



obliquus abdom. int., 392. 

 Muskelkastcben, 344, 347. 

 Myocoele, 349. 



Myomeres, 343, 350, 598. 

 Myomerism, 632. 

 Myotome, 362. 



N. 



Nail-plate, 527. 

 Nails, 526. 

 Nasal area, 511. 

 - bone, 619. 



furrow, 513. 



orifice, inner, 514. 



orifice, outer, 514. 



processes, 488, 513. 

 Naso-palatal (Stenson's) duct, 517. 

 Naso-pharyngeal passage, 517. 

 Neck-measurement, 283. 

 Nephridial funnel, 356, 364. 

 Nephrostome, 364. 

 Nephrotome, 362. 



Nerves, 452. 



Nervous system, 416, 449. 



Nervus acusticus, 506. 



cochleae, 502. 



hypoglossus, 457. 



laryngeus inf. (recurrens), 575. 



lateralis vagi, 456. 



phrenicus, 569. 



vagus, 299. 



vestibuli, 502. 



Neural crest, 450. 



plate, 416. 



ridge, 450. 



tube, 110, 417. 

 Nictitating membrane, 487. 

 Nipple, 530. 



Nose, 518. 



Notochord gee Chorda dorsalis. 



Nuchal flexure, 423. 



protuberance, 424. 

 Nuclear liquid, 8. 



loops, fission of, 53, 55. 



network, 9. 



plate, 53. 



spindle, 52. 

 Nuclein, 9, 26, 52. 

 Nucleoli, 9. 

 Nucleus caudatus, 442. 



lentiformis, 442. 

 Nutritive yolk see Yolk. 



O. 



Occipital bone, 617. 



lobes. 443. 



region. 608. 

 Odontoblasts, 306. 

 (Esophagus. 297. 299, 320. 

 Olfactory buds, 513. 



- labyrinth, 518. 



lobes, 448, 511. 



nerve, 448, 511. 



organ, 511. 



pit, 511. 



Omentum, greater, 299, 303. 



lesser, 300, 330. 

 Obscope, 212. 

 Optic cup, 469, 476. 



nerve, 484. 



vesicle, 423, 467. 



vesicle, stalk of, 468. 

 Orbital region, 608. 



Os acetabuli, 640. 



angulare, 622, 625. 



articulare. 625. 



coccygis, 600. 



coracoideum, 638. 



dentale, 625. 



entoglossum, 610. 



ethmoidale> 621. 



frontale, 621. 



hyoides, 613, 622. 



- intermaxillare, 622. 



- interparietale, 619. 



ischii, 639. 



- lacrymale, 621. 



lentiforme, 614. 



maxillare. 516. 



parietale, 621, 



