LIST OF ILLUSTRATIONS. 15 



FIG. t'AOK 



42. CURVES ILLUSTRATING THE DISTRIBUTION OF THE 



DIFFERENT CONSTITUENTS OF A FROG'S SPINAL 

 CORD (GAULE) ... 220 



43. THE "BASKET CELLS" OF THE CEREBELLUM (RAMON Y 



CAJAL) 224 



44. INCOMING FIBRES AND FORMATION OF COLLATERALS 



(RAMON Y CAJAL) 226 



45. SILHOUETTE OF THE WHITE SUBSTANCE ARBOR VI1VE 



OF A HUMAN CEREBELLUM (ENGEL) 236 



46. THE DEVELOPING HUMAN CORTEX (VIGNAL) 239 



47. THE LAYERS OF A HUMAN CORTEX (SCHEMATIC COM- 



BINATION OF THE FIGURES OF MEYNERT AND 

 OBERSTEINER) 242 



48. DEVELOPMENT OF THE TANGENTIAL FIBRES OF A 



HUMAN CORTEX INFANT AND ADULT COMPARED 



(VULPIUS) 243 



49. GROWTH OF THE TANGENTIAL FIBRES OF A HUMAN- 



CORTEX BETWEEN BIRTH AND SEVENTY-NINE YEARS 

 (MODIFIED FROM VULPIUS) 245 



50. VENTRAL ASPECT OF THE HUMAN SPINAL CORD (ALLEN 



THOMSON, QUAIN'S "ANATOMY") 250 



51. SCHEMA OF THE PATHWAY OF THE SENSORY IMPULSES 



IN A CENTRAL SYSTEM (VAN GEHUCHTEN) ... 253 



52. CONNECTION OF THE PRIMARY CENTRES FOR VISION 



WITH THE OCCIPITAL CORTEX (EDINGER) 254 



53. SCHEMA OF THE PROJECTION FIBRES WITHIN THE 



BRAIN (STARR) 256 



54. FRONTAL SECTION OF A HUMAN HEMISPHERE, SHOW- 



ING INTERNAL CAPSULE (SHERRINGTON, FOSTER'S 



"PHYSIOLOGY") 257 



55. BRAIN OF A MACAQUE MONKEY, SHOWING SENSORY 



AND MOTOR AREAS (BEEVOR AND HORSLEY, FOSTER'S 

 "PHYSIOLOGY") 259 



56. LEFT HEMISPHERE OF AN ORANG-UTANG, SHOWING 



MOTOR AREAS (BEEVOR AND HORSLEY) 262 



57. LOCALISATION OF DIFFERENT TYPES OF MOVEMENT IN 



THE ARM AREA (AFTER HORSLEY) 264 



58. HUMAN HEMISPHERE, SHOWING ASSOCIATION FIBRES 



(STARR) 267 



59- CROSS-SECTION OF THE SPINAL CORD IN MAN, MONKEY, 



AND DOG, GIVING THE AREA OF THE PYRAMIDAL 



TRACTS (SHERRINGTON, FOSTER'S " PHYSIOLOGY ") 269 



60. SCHEMA OF THE PATHWAY OF THE EFFERENT FIBRES 



(VAN GEHUCHTEN) 270 



61. HORIZONTAL SECTION OF A HUMAN HEMISPHERE, SHOW- 



ING INTERNAL CAPSULE AND THE LOCALISATION 

 OF THE FIBRE BUNDLES IN IT (BASED ON HORSLEY, 

 FOSTER'S "PHYSIOLOGY") 271 



