IV CONTENTS. 



CHAPTER XVII. 



PAGE 



NUTRITION: THE INCOME AND EXPENDITURE OF THE HUMAN BODY . . 63 



Nitrogenous Equilibrium and Formation of Fat 66 



CHAPTER XVIII. 



THE NERVOUS SYSTEM 68 



Elementary Structures of the Nervous System 68 



Structure of Nerve-Fibres 69 



Terminations of Nerve-Fibres 74 



Structure of Nerve-Centres . 77 



Functions of Nerve- Fibres 78 



Classification of Nerve-Fibres 80 



Laws of Conduction in Nerve- Fibres 81 



Functions of Nerve-Centres 83 



Laws of Reflex Actions 85 



Secondary or Acquired Reflex Actions 87 



CEREBRO- SPINAL NERVOUS SYSTEM 88 



The Spinal Cord and its Nerves 90 



The White Matter of the Spinal Cord 91 



The Grey Matter of the Spinal Cord 92 



Nerves of the Spinal Cord 94 



Functions of the Spinal Cord . 97 



THE MEDULLA OBLONGATA 105 



Its Structure 105 



Distribution of the Fibres of the Medulla Oblongata 106 



Functions of the Medulla Oblongata 109 



STRUCTURE AND PHYSIOLOGY OF THE PONS VAROLII, CRURA CEREBRI, COR- 

 PORA QUADRIGEMINA, CORPORA GENICULATA, OPTIC THALAMI, AND COR- 



PORA STRIATA 



PonsVarolii U2 



CruraCerebri 113 



Corpora Quadrigemina 114 



Corpora Striata and Optic Thakmi 114 



THE CEREBELLUM 



Functions of the Cerebellum 118 



THE CEREBRUM 120 



Convolutions of the Cerebrum 120 



Structure of the Cerebrum 123 



Chemical Composition of the Grey and White Matter 125 



Functions of the Cerebrum , . . . 127 



Effects of the Removal of the Cerebrum 128 



Localization of Functions 129 



Experimental Localization of Functions 



Sleep 135 



