12 CONTENTS 



NERVE continued PA(;B 



Electrotonus - 595 



Conduction in the nerve - 600 



Velocity of the nerve-impulse - - 603 



Degeneration and regeneration of nerve - - 606 



Trophic nerves - 610 



Classification of nerves - 613 



CHAPTER XI. 



ELECTRO-PHYSIOLOGY . . - 628 



Currents of rest and action - - 629 



Polarization of muscle and nerve - - 638 



Electrotonic currents - - 639 



Heart-currents - - 644 



Glandular currents - - - 646 



Eye-currents - - 647 



Electric fishes ... - 648 



CHAPTER XII. 



THE CENTRAL NERVOUS SYSTEM - - 657 



Structure - - - 658 



Development - 659 



Histology - - - 660 



Nutrition of the neuron 666 

 General arrangement of grey and white matter in the central 



nervous system - - 671 



Arrangement of grey and white matter in the spinal cord 674 

 Arrangement of grey and white matter in the upper part of 



the cerebro- spinal axis 678 



Functions of the central nervous system - - 693 



Functions of the spinal cord - - 696 



Decussation of impulses in the cord - 701 



Reflex action - 704 



Automatism of the spinal cord - - 712 



The cranial nerves - - - 717 



The functions of the brain - - 726 



Functions of the cerebellum - - 729 



Co-ordination of movements - 735 



Functions of the cerebral cortex - 739 



Motor areas - 743 



Sensory areas - 748 



Localization of function in central nervous system - - 756 



Reaction time - 760 



Sleep - 761 



CHAPTER XIII. 



THE SENSES - - - -771 



Physical introduction 



Structure of the eye 



Refraction in the eye 



Accommodation 



Iris - 



Defects of the eye 



Ophthalmoscope 



Vision _ - - - 773 



- 773 



- 781 



- 783 



- 786 



- 789 



- 794 



- 800 

 Diplopia - 804 



