CHAPTER XV. THE NERVOUS SYSTEM. Pp. 400-469.

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 development 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 Vertebrata, pp. 445-447. _Development of the cranial and spinal nerves_, pp. 448-466. Spinal nerves, pp. 448-455. Cranial nerves, pp. 455-466. _Sympathetic nervous system_, pp. 466-468.