LIST OF ILLUSTRATIONS 



FIG. PAGE 



1. The Lateral Ventricles opened by removal of the middle 



part of the Corpus Callosum, and the Descending Cornu 

 exposed on the right side - 56 



2. View of the Upper Surface of the Velum Interpositum, 



Choroid Plexuses, and Corpora Striata 57 



3. Transverse Section through the Brain and Skull made whilst 



frozen - 69 



4. The Cranium opened to show the Falx of the Cerebrum 



and Tentorium of the Cerebellum, and the Places of 

 Exit of the Cranial Nerves - 70 



5. Section of the Spinal Cord within its Membranes (Upper 



Dorsal Region) - 71 



6. Section of the posterior and lower parts of the Brain 



within the Skull, to exhibit the Subarachnoid Space 



and its relation to the Ventricles - 72 



7. Two portions ofMedullated Nerve Fibres, after treatment 



with Osmic Acid, showing the Axis-Cylinder, and the 

 Medullary and Primitive Sheaths 73 



8. Part of an Axis-Cylinder, highly magnified, showing the 



Varicose Fibrils composing it - - 73 



9. Varicose Medullated Fibres from the Root of a Spinal 



Nerve - 74 



10. B, Diagram to show the parts of a Medullated Fibre 74 



11. Right half of the Brain divided by a vertical Antero- 



Posterior Section 75 



xxiii 



