CONTENTS OF VOLUME II. IX 



PART II. ORGANOGENY; 



INTRODUCTION. Pp. 391, 392. 



CHAPTER XIV. THE EPIDERMIS AND ITS DERIVATIVES. Pp. 393399. 

 Protective epidermic structures, pp. 393 397. Dermal skeletal structures, 

 p. 397. Glands, pp. 397, 398. 



CHAPTER XV. THE NERVOUS SYSTEM. Pp. 400469. 



The origin of the nervous system, pp. 400 405. Nervous system of the 

 Invertebrata, pp. 405 414. Central nervous system of the Vertebrata, pp. 415 

 447. Spinal chord, pp. 415 419. General development of the brain, pp. 419 

 423. Hind-brain, pp. 424 427. Mid-brain, pp. 427, 428. General develop- 

 ment of fore-brain, pp. 428 430. Thalamencephalon, pp. 430 435. Pituitary 

 body, pp. 435 437. Cerebral Hemispheres, pp. 437 444. Olfactory lobes, 

 pp. 444, 445. General conclusions as to the central nervous system of the Verte- 

 brata, pp. 445 447. Development oj 'the cranial and spinal nerves, pp. 448 466. 

 Spinal nerves, pp. 448 455. Cranial nerves, pp. 455 466. Sympathetic nervous 

 system, pp. 466 468. 



CHAPTER XVI. ORGANS OF VISION. Pp. 470 511. 



Coelenterata, pp. 471, 472. Mollusca, pp. 472 479. Chastopoda, p. 479. 

 Chretognatha, p. 479. Arthropoda, pp. 479 483. Vertebrata general, pp. 483 

 490. Retina, pp. 490 492. Optic nerve, pp. 492, 493. Choroid fissure, p. 493. 

 Lens, pp. 494, 495. Vitreous humour, pp. 494, 495. Cornea, pp. 495 497. 

 Aqueous humour, p. 497. Comparative development of Vertebrate eye, pp. 497 506. 

 Ammocoete eye, pp. 498, 499. Optic vesicles, p. 499. Lens, p. 499. Cornea, 

 p. 500. Optic nerve and choroid fissure, pp. 500 505. Iris and ciliary pro- 

 cesses, p. 506. Accessory organs connected with the eye, p. 506. Eyelids, 

 p. 506. Lacrymal glands, p. 506. Lacrymal duct, pp. 506, 507. Eye of the 

 Tunicata, pp. 507 509. Accessory eyes in the Vertebrata, pp. 509, 510. 



CHAPTER XVII. AUDITORY ORGAN, OLFACTORY ORGAN, AND SENSE 



ORGANS OF THE LATERAL LINE. Pp. 5 12 541. 



Auditory organs, pp. 512 531. General structure of auditory organs, 

 PP- 512, 513. Auditory organs of the Coelenterata, pp. 513 515. Auditory 

 organs of the Mollusca, pp. 515, 516. Auditory organs of the Crustacea, p. 516. 

 Auditory organs of the Vertebrata, pp. 516 530. Auditory vesicle, pp. 517 

 524. Organ of Corti, pp. 524 527. Accessory structures connected with the 

 organ of hearing of terrestrial vertebrata, pp. 527 530. Auditory organ of the 

 Tunicata, pp. 530, 531. Bibliography of Auditory organs, p. 531. 



Olfactory organs, pp. 531 538. Bibliography of Olfactory organs, p. 538. 



Sense organs of the lateral line, pp. 538540. Bibliography of sense 



organs of lateral line, pp. 540, 541. 



CHAPTER XVIII. THE NOTOCHORD, THE VERTEBRAL COLUMN, THE 

 RIBS, AND THE STERNUM. Pp. 542 563. 



Introductory remarks on the origin of the skeleton, pp. 542 544. Biblio- 

 graphy of the origin of the skeleton, pp. 544, 545. The notochord and its cartilngi- 



