LIST OF ILLUSTRATIONS. 



FIG. PAGB 



1. Sagittal section of skull, showing falx cerebri, falx cerebelli, 



a part of the tentorium cerebelli and the sinuses of the 

 dura mater. (After Morris's Anatomy) 3 



2. Upper surface of tentorium cerebelli, tentorial notch and cer- 



tain sinuses of the dura. (After Morris's Anatomy) . . 4 



3. Sinuses of the dura mater in the base of cranium, etc. (After 



Morris's Anatomy) 5 



4. Coronal section of meninges showing falx cerebri, superior 



sagittal sinus and the arachnoid granulations. (Gor- 

 dinier after Key and Retzius) 6 



5. Middle meningeal artery inside the cranium. (After Mor- 



ris's Anatomy) 7 



6. Diagram of pia mater and arachnoid, showing subarachnoid 



spaces. (After Morris's Anatomy) 9 



7. Horizontal section of the cerebrum. Fornix turned back to 



show the chorioid tela of third ventricle. (Original), n 



8. Roof and lateral walls of fourth yentricle and its chorioid 



plexus. (After Morris's Anatomy) 13 



9. Arterial circle of Willis and its branches. The base of the 



brain. (After Morris's Anatomy) 15 



10. Arterial circle (Willisi) and base of the cerebrum. (After 



Gordinier from Quairi) 19 



n. Middle cerebral artery, and its branches. (After Gordinier 



from Quairi) 22 



12 Anterior and posterior cerebral arteries. (After Spalteholz).. 25 



13. Arteries of the medulla oblongata. (Gordinier after Duret) ... 27 



14. Median section of embryonic brain of third month. (After 



McMurrich from His) 28 



15. Divisions of the brain, diagrammatic. (After Morris's Anat- 



omy) 31 



16. Neural tube and brain vesicles. (After Morris's Anatomy).. 35 



17. Diagrammatic horizontal section of vertebrate brain, showing 



vesicles and ventricles. (After Morris from Huxley) 36 

 xxvii 



