3OO LILY C. SHUDDEMAGEN. 



PLATE XXV. 



FIGS. 711. Horizontal, longitudinal sections of the brain. The dotted parts of 

 the figures show the ventricles. 



FIG. 7. The dorsal surface of a horizontal section ; taken in plane v of Fig. 2. 

 FIG. 8. The dorsal surface of a horizontal section, taken in the plane w of Fig. 2. 

 FIG. 9. The dorsal surface of a horizontal section, taken in the plane z of Fig. 2. 

 FIG. 10. The dorsal surface of a horizontal section, taken in the plane y of Fig. 2. 

 FIG. II. The dorsal surface of a horizontal section, taken in plane x of Fig. 2. 

 FIGS. 12-20 are cross-sections of the brain, beginning at the anterior end. 

 FIG. 12. The caudal surface of a cross-section taken in the plane a of Fig. 4. 

 FIG. 13. The caudal surface of a cross-section taken in the plane b of Fig. 4. 

 FIG. 14. The caudal surface of a cross-section taken in the plane c of Fig. 4. 

 FIG. 15. The caudal surface of a cross-section taken in the plane d of Pig. 4. 

 FIG. 1 6. The caudal surface of a cross-section taken in the plane e of Fig. 4. 

 FIG. 17. The caudal surface of a cross-section taken in the planey~of Fig. 4. 

 FIG. 18. The caudal surface of a cross-section taken in the plane g of Fig. 4. 

 FIG. 19. The caudal surface of a cross-section taken in the plane h of Fig. 4. 

 FIG. 20. The caudal surface of a cross section taken in the plane i of Fig. 4. 



