TABLE OF CONTENTS. 9 



PAGE 



CHAPTER XI. THE FUNCTIONS OF THE CEREBELLUM, THE PONS, AND 



THE MEDULLA 216 



Anatomical Structure and Relations of the Cerebellum, 216. General State- 

 ment of Theories Regarding the Cerebellum, 219. Experiments upon Abla- 

 tion of the Cerebellum, 220. Interpretation of the Experimental and Clinical 

 Results, 221. Conclusions as to the General Functions of the Cerebellum, 

 223. The Psychical Functions of the Cerebellum, 224. Localization of 

 Function in the Cerebellum, 224. The Functions of the Medulla Oblongata, 

 225. The Nuclei of Origin and the Functions of the Cranial Nerves, 226. 



CHAPTER XII. THE SYMPATHETIC OR AUTONOMIC NERVOUS SYSTEM . . 231 



General Statements, 231. Autonomic Nervous System, 232. The Use of 

 the Nicotin Method, 233. General Course of the Autonomic Fibers Arising 

 from the Cord, 233. General Course of the Fibers Arising from the Brain, 

 234. General Course of the Fibers Arising from the Sacral Cord, 236. 

 Normal Mode of Stimulation of Autonomic Nerve Fibers, 236. 



CHAPTER XIII. THE PHYSIOLOGY OF SLEEP 238 



General Statements, 238. Physiological Relations during Sleep, 238. The 

 Intensity of Sleep, 239. Changes in the Circulation during Sleep, 242. 

 Effect of Sensory Stimulation, 243. Theories of Sleep, 244. Hypnotic Sleep. 

 248. 



SECTION III. 

 THE SPECIAL SENSES. 



CHAPTER XIV. CLASSIFICATION OF THE SENSES AND GENERAL STATE- 

 MENTS 249 



Classification of the Senses, 249. The Doctrine of Specific Nerve Energies, 

 251. The Weber-Fechner Psychophysical Law, 253. 



CHAPTER XV. CUTANEOUS AND INTERNAL SENSATIONS 256 



General Statements, 256. The Punctiform Distribution of the Cutaneous 

 Senses, 256. Specific Nerve Energies of the Cutaneous Nerves, 258. The 

 Temperature Senses, 259. The Sense of Pressure, 260. The Threshold Stimu- 

 lus and the Localizing Power, 260. The Pain Sense, 262. Localization or 

 Projection of Pain Sensations, 263. Reflected or Misreferred Pains, 263. 

 The Muscle Sense, 264. The Quality of the Muscle Sense, 266. Sensations 

 of Hunger and Thirst, 267. The Sense of Thirst, 268. 



CHAPTER XVI. SENSATIONS OF TASTE AND SMELL 270 



The Nerves of Taste, 270. The End-organ of the Taste Fibers, 272. Classi- 

 fication of Taste Sensations, 272. Distribution and Specific Energy of the 

 Fundamental Taste Sensations, 273. Method of Sapid Stimulation, 275. 

 The Threshold Stimulus for Taste, 275. The Olfactory Organ, 275. The 

 Mechanism of Smelling, 276. Nature of the Olfactory Stimulus, 277. The 

 Qualities of the Olfactory Sensations, 277. Fatigue of the Olfactory Apparatus, 

 279. Delicacy of the Olfactory Sense, 280. Conflict of Olfactory Sensations, 

 281. Olfactory Associations, 281. 



CHAPTER XVII. THE EYE AS AN OPTICAL INSTRUMENT. DIOPTRICS 



OF THE EYE 282 



Formation of an Image by a Biconvex Lens, 282. Formation of an Image 

 in the Eye, 285. The Inversion of the Image on the Retina, 287. The Size 

 of the Retinal Image, 288. Accommodation of the Eye, 289. Limit of the 

 Power of Accommodation and Near Point of Distinct Vision, 292. Far 

 Point of Distinct Vision, 292. The Refractive Power of the Surfaces in the 

 Eye, 293. Optical Defects of the Normal Eye, 293 .Spherical Aberration, 

 294. Abnormalities in the Refraction of the Eye, Myopia, 295. Hyperme- 

 tropia, 296. Presbyopia, 297. Astigmatism. 297. Innervation and Control 

 of the Ciliary Muscle and the Muscles of the Iris, 299. The Accommodation 

 Reflex and the Light Reflex, 301. Action of Drugs upon the Iris, 303. 

 The Antagonism of the Sphincter and Dilator Muscles of the Iris, 304. The 

 Ophthalmoscope, 305. 



CHAPTER XVIII. THE PROPERTIES OF THE RETINA. VISUAL STIMULI 



AND VISUAL SENSATIONS , 308 



The Portion of the Retina Stimulated by Light, 308. The Action Current 

 Caused by Stimulation of the Retina, 309. The Visual Purple, Rhodopsin. 

 310. Extent of the Visual Field, Perimetry, 312. Central and Peripheral 

 Fields of Vision, 313. Visual Acuity, 315. Relation Between Stimulus and 

 Sensation, Threshold Stimulus, 317. The Light Adapted and the Dark Adapted 



