14 CONTENTS 



CHAPTER IX PAGE 



THE STRUCTURE OF THE MEDULLA OBLONGATA 132 



The Rearrangement Within the Medulla Oblongata of the Structures Continued Upward 



from the Spinal Cord 133 



Decussation of the Pyramids 136 



Nucleus Gracilis, Nucleus Cuneatus, and Medial Lemniscus 137 



Olivary Nuclei 141 



Restiform Body 143 



Formatio Reticularis 144 



CHAPTER X 



INTERNAL STRUCTURE OF THE PONS 147 



Basilar Part of the POPS 147 



Dorsal Part of the Pons 149 



CHAPTER XI 



INTERNAL STRUCTURE OF THE MESENCEPHALON 158 



Tegmentum 158 



Basis Pedunculi 164 



Corpora Quadrigemina 165 



CHAPTER XII 



THE CRANIAL NERVES AND THEIR NUCLEI 168 



Somatic Efferent Column of Nuclei 170 



Special Visceral Efferent Column of Nuclei 174 



General Visceral Efferent Column of Nuclei 177 



Visceral Afferent Column 180 



General Somatic Afferent Nuclei 182 



Special Somatic Afferent Nuclei 185 



Summary of the Origin and Composition of the Cranial Nerves 190 



CHAPTER XIII 



THE CEREBELLUM 195 



Development 195 



Anatomy 196 



Morphology 199 



Nuclei of the Cerebellum 203 



Cerebellar Peduncles 204 



Histology of the Cerebellar Cortex 206 



Efferent Cerebellar Tracts 211 



CHAPTER XIV 



THE DlENCEPHALON AND OPTIC NERVE 213 



Thalamus 213 



Epithalamus and Metathalamus 220 



Hypothalamus 222 



Third Ventricle 223 



Visual Apparatus 225 



CHAPTER XV 



EXTERNAL CONFIGURATION OF THE CEREBRAL HEMISPHERES 229 



Development of the Cerebral Hemispheres 229 



The Dorsolateral Surface 232 



The Medial and Basal Surfaces . . . 238 



