xii CONTENTS. 



PAGE 



ABSORPTION, continued. 



Lymphatic Glands . . . . . . . . . . 358 



Properties of Lymph and Chyle . . . . . . 360 



Absorption by the Lacteal Vessels . . . , . . 366 



Absorption by the Lymphatics . . . . . . 367 



Absorption by Blood-vessels . . . . . . . . 370 



CHAPTER XI. 



NUTRITION AND GROWTH . . . . . . . . 379 



NUTRITION . . . . . . . . . . . . ib. 



GROWTH . . . . . . . . . . . . 395 



CHAPTER XII. 



SECRETION . . . . . . . . . . . . 399 



SECRETING MEMBRANES . . . . . . . . 400 



SECRETING GLANDS . . . . . . . . . . 406 



PROCESS OF SECRETION . . . . . . . . 409 



CHAPTER XIII. 



VASCULAR GLANDS; OR GLANDS WITHOUT DUCTS .. .. 415 



CHAPTER XIV. 



THE SKIN AND ITS SECRETIONS .. .. .. .. 421 



Structure of the Skin . . . . . . . . ib. 



Structure of Hair and Nails . . . . . . . . 430 



Excretion by the Skin . . . . . . . . 434 



Absorption by the Skin . . . . . . . . 439 



CHAPTER XV. 



THE KIDNEYS AND THEIR SECRETION . . . . . . 442 



Structure of the Kidneys . . . . . . . . ib. 



Secretion of Urine . . . . . . . . . . 448 



The Urine ; its general Properties . . . . . . 450 



Chemical Composition of the Urine . . . . . . 452 



CHAPTER XVI. 



THE NERVOUS SYSTEM . . . . . . . . . . 465 



Elementary Structures of the Nervous System . . . . 466 



Functions of Nerve-Fibres . . . . . . . . 476 



Functions of Nerve-Centres . . . . . . . . 485 



CEREBRO-SPINAL NERVOUS SYSTEM . . . . . . 490 



Spinal Cord and its Nerves . . . . . . . . ib. 



Functions of the Spinal Cord .. .. .. .. 497 



THE MEDULLA OBLONGATA .. .. .. .. 510 



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



Distribution of the Fibres of the Medulla Oblongata . . 512 



Functions of the Medulla Oblongata .. .. .. 514 



