

CONTENTS OF PAET I. 



THE SPINAL CORD AND BRAIN. 



PAGE 



THE CEREBRO-SPINAL Axis . . . i 

 THE SPINAL COED . . . . .2 



External form . .... 2 



Fissures . . . . . . 6 



Internal structure . . . . . 7 



Grey Matter ..... 7 



Central Canal 9 



White Matter ..... 9 



Features of different regions . . . 10 



Microscopic structure . . . .12 



General structure 12 



Distribution of Nerve-Cells . .14 

 of Anterior Horn . . . . 14 



of Clarke's Column . . .16 



of Middle Cell- Column . . . 17 



of Posterior Horn ; Solitary Cells. 17 



Commissures . . . . . . 18 



Central Canal . . . . . . IQ 



Origin of Spinal Nerves . . . . 



Anterior Roots *' f 



Posterior Roots '. . . . . 



Collateral Fibres .... 



Conducting Tracts ..... 



Methods of investigation 

 Antero-lateral Column . . . . 



Posterior Column .... 



Degenerations in Spinal Cord . . . 

 From section of Posterior Roots . 

 From Lesions of the Brain . . ., 

 From Lesions of the Cerebellum . 

 From Lesions of the Cord . . . 

 THE BRAIN OR ENCEPHALON . 

 THE MEDULLA OBLONGATA AND PONS 

 VAROLII ...... 



THE MEDULLA OBLONGATA 



External characters ..... 



Posterior Area ..... 



Lateral Area . . . ... 



Olivary Body . . 



Anterior Area ...... 



Pyramids . . . . . - . 



THE PONS VAROLII 



19 

 19 



20 



21 

 22 

 22 

 24 

 26 

 27 

 27 



31 



32 

 32 

 38 



38 

 38 

 38 



43 

 45 

 45 

 45 

 45 

 46 



Fourth Ventricle 47 



Internal structure of Medulla Oblongata 5 1 



Closed part . . . . . 5 1 



Ventricular part 53 



Nucleus of Olivary Body . . .56 



Formatio Reticularis . . . . 58 



Arched Fibres 59 



Internal structure of Pons Varolii . . 60 

 Course of Fibres from Cord through Bulb 



and Pons 63 



Transition from Pons to Mid-Brain . . 65 



THE CEREBELLUM 69 



External form . . . . . . 69 



Upper surface . . . . . 71 



Under surface . . . . . . 74 



Arbor Vitaj 83 



Commissural Fibres in White Matter . 84 



Peduncles .84 



Microscopic structure . . 86 



Degenerations following Lesions of. . 93 



THK MID-BRAIN AND INTER-BRAIN . . 96 



Aqueduct of Sylvius . . . -96 



Third Ventricle 97 



Central Grey Matter of Aqueduct . . 98 

 Crura Cerebri . . . . . . 100 



Crusta ...... 100 



Substantia Nigra . . . . . 101 



Tegmentum . . . . .102 



Tract of Fillet 103 



Dorsal part of Mid-Brain . . . 105 

 Corpora Quadrigemina . . . . 105 

 Posterior Commissure .... 109 



Geniculate Bodies 109 



Optic Thalami no 



Trigonum Habenulse . . . . 113 

 Subthalamic Tegmental Region . .114 



Pineal Body 114 



Posterior Perforated Space . . .115 

 Corpora A Ibicantia . . . . 115 



Infundibulum, and Tuber Cinereum . 116 

 Pituitary Body . . .' . . 116 

 Lamina Cinerea . . - . . 1 1 7 

 Optic Tracts and Chiasma . . .117 

 THE LATERAL VENTRICLES : CORPORA 



STRIATA : CEREBRAL HEMISPHERES 122 

 Lateral Ventricles . . . . .122 



Corpus Callosum . . . . . 127 



Septum Lucidum . v . . .129 

 Fornix . . . . . . . 129 



Tsenia Semicircularis . . .. .131 



Corpora Striata . . . . . . . . 131 



External Capsule 135 



Claustrum . . . . . . 135 



Internal Capsule . . . . 136 



Cerebral Hemispheres . . . . 137 



External form . . . . . 137 



Fissures 141 



Frontal Lobe 145 



Parietal Lobe 149 



Occipital Lobe 151 



Temporal Lobe 152 



Central Lobe or Island of Reil . . 154 



Limbic Lobe 155 



Olfactory Lobe . . . . . 159 



28G' ! 



