Plate VI. c, central canal; dp, decussation of the pyramidal tract; 

 fc, fasciculus cuneatus; fr, reticular formation; fs, lower end of 

 fasciculus solitarius; nfl, nucleus funiculi lateralis; ng, nucleus 

 gracilis; nXI, nucleus of nerve XL; nXII, nucleus of nerve XII.; 

 p, pyramidal tract; sr, gelatinous substance of Rolando; XL, nerve 

 XL; XII., root of nerve XII. 



Plates VI.-XXV. THE MAGNIFICATION IN PLATES VL-XXV. 

 INCLUSIVE IS 12.5. THESE ARE TRANSVERSE SECTIONS 

 THROUGH THE BRAIN OF AN ADULT ALBINO RAT 

 STAINED BY THE METHOD OF WEIGERT. THE LEVELS 

 OF THE SECTIONS ARE INDICATED IN PLATE XXVIII. 



