xii CONTEXTS. 



CHAPTER XV. 



PAGE 



THE KIDNEYS AND THEIR SECRETION 440 



Structure of the Kidneys ib. 



Secretion of Urine ........ 446 



The Urine ; its general Properties 448 



Chemical Composition of the Urine . ' . . . . 450 



CHAPTER XVI. 



THE NERVOUS SYSTEM 463 



Elementary Structures of the Nervous System . . . 464 



Functions of Nerve-Fibres 474 



Functions of Nerve-Centres 483 



CEREBRO-Sl'INAL NERVOUS SYSTEM. . . . . . 488 



Spinal Cord and its Nerves ib* 



Functions of the Spinal Cord 495 



THE MEDULLA OBLONGATA . 509, 



Its Structure . . . . . . ... ib. 



Distribution of the Fibres of the Medulla Oblongata . 511 



Functions of the Medulla Oblongata 513 



SIR rcTr 1:1; AND PHYSIOLOGY OF THE PONS VAROLII, CRURA 

 CKRI-:BRI, CORPORA QUADRIGEMINA, CORPORA GENICU- 



LATA, OPTIC THALAMI, and CORPORA STRIATA . . . 518 



Pons Varolii t&. 



Crura Cerebri ib. 



Corpora Qnadrigemina 520 



The Sensory Ganglia 523 



STRUCTURE AND PHYSIOLOGY OF THE CEREBELLUM . . 524 



STRUCTURE AND PHYSIOLOGY OF THE CEREBRUM . . 531 



PHYSIOLOGY OF THE CEREBRAL AND SPINAL NERVES . . 538" 

 Physiology of the Third, Fourth, and Sixth Cerebral or 



Cranial Nerves 539 



Physiology of the Fifth or Trigeminal Nerve . . . 543 



Physiology of the Facial Nerve 550 



