CONTENTS. 



IX 



PAGB 



paths in the cord Eolations of the posterior white columns of the cord to muscular co-ordination- 

 Nerve-centres in the" spinal cord Reflex action of the spinal cord Exaggeration of reflex excitability 

 by decapitation, poisoning with strychnine etc. Reflex phenomena observed in the human subject 586 



CHAPTER XIX. 

 THE ENCEPHALIC GANGLIA. 



Physiological divisions of the encephalon Weights of the encephalon and of certain of its parts The 

 cerebral hemispheres Cerebral Convolutions Basal ganglia Corpora striata, optic thalami and 

 internal capsule Tubercular quadrigemina Pons Varolii Directions of the fibres in the cerebrum 

 Cerebral localization General uses of the cerebrum Extirpation of the cerebrum Facial angle- 

 Pathological observations Reaction-time Centre for the expression of ideas in language The 

 cerebellum Physiological anatomy Extirpation of the cerebellum Pathological observations 

 Connection of the cerebellum with the generative function Medulla oblongata (Bulb) Physiologi- 

 cal anatomy Uses of the medulla oblongata Respiratory nerve-centre Cardiac centres Vital 

 point (so called) Rolling and turning movements following injury of certain parts of the encephalon 601 



CHAPTER XX. 



SYMPATHETIC NERVOUS SYSTEM-SLEEP. 



General arrangement of the sympathetic system General properties of the sympathetic ganglia and 

 nerves Direct experiments on the sympathetic Vaso-motor centres and nerves Reflex vaso-iuotor 

 phenomena Vaso-inhibitory nerves Trophic centres and nerves (so-called) Sleep Condition of 

 the brain and nervous system during sleep Anaesthesia and sleep produced by pressure upon the 

 carotid arteries Differences between natural sleep and stupor or coma Regeneration of the brain- 

 substance during sleep Condition of the organism during sleep ...... 635 



/ 



CHAPTER XXI. 



SPECIAL SENSES-TOUCH, OLF ACTION AND GUSTATION. 



General characters of the special senses Muscular sense (so called) Sense of touch Variations in 

 tactile sensibility in different parts (sense of locality of impressions) Table of variations measured 

 by the sesthesiometer Appreciation of temperature Tactile centre Olfaction Nasal fossae 

 Schneiderian and olfactory membranes Olfactory (first nerve) Physiological anatomy Olfactory 

 bulbs Olfactory cells and terminations of the olfactory nerve-fibres Properties and uses of the 

 olfactory nerves Mechanism of olfaction Relations of olfaction to the sense of taste Reflex acts 

 through the olfactory nerves Olfactory centre Gustation Savors Nerves of taste Chorda tym- 

 pani Glosso-pharyngeal (ninth nerve) Physiological anatomy General properties of the glosso- 

 pharyngeal Relations of the glosso-pharyngeal nerves to gustation Mechanism of gustation 

 Physiological anatomy of the organ of taste Papillae of the tongue Taste-beakers Connections of 

 the nerves with the organs of taste Taste-centre . . ..... 652 



CHAPTER XXII. 



VISION. 



General considerations Optic (second nerve) General properties of the optic nerves Physiological 

 anatomy of the eyeball Sclerotic coat Cornea Choroid coat Ciliary muscle Iris Pupillary 

 membrane Retina Crystalline lens Aqueous humor Chambers of the eye Vitreous humor- 

 Summary of the anatomy of the globe The eye as an optical instrument Certain laws of refrac- 

 tion, dispersion etc., bearing upon the physiology of vision Refraction by lenses Visual purple 

 and visual yellow and accommodation of the eye for different degrees of illumination Formation of 

 images in the eye Mechanism of refraction in the eye Astigmatism Movements of the iris Di- 

 rect action of light upon the iris Action of the nervous system upon the iris Mechanism of the 

 movements of the iris Accommodation of the eye for vision at different distances Changes in 

 the crystalline lens in accommodation Changes in the iris in accommodation Erect impressions 

 produced by images inverted upon the retina Field of indirect vision The perimeter Binocular 

 vision Corresponding points The horopter Duration of luminous impressions (after-images) 

 Irradiation Movements of the eyeball Muscles of the eyeball Centres for vision Parts for the 

 protection of the eyeball Conjunctival mucous membrane Lachrymal apparatus Composition of 

 the tears . ........... 



