160 



PROFESSOR W. H. THOMPSON. 



The fibres of this bundle when traced downwards were seen to 

 enter a group of cells in the pons, situated external to the 

 pyramidal bundles, and on the side of the lesion. The majority 

 ended here, but some were found crossing in the trapezium to 

 effect a connection, no doubt, with the corresponding group of 



c d 



Fig. 9. — Dorso-ventral sections through mid-brain of same marmoset as preced- 

 ing four figures, and through upper part of medulla of marmoset 9. 



(a.) through upper part of crura. 



(&.) through lower part of same. 



(c.) through pons varolii. 



{d.) through upper part of medulla of marmoset 9. 



the opposite side. Thus, at this stage, a bilateral communica- 

 tion is again established. Gerwier ^ also describes degenerated 

 fibres crossing in the transverse bundles of the pons after lesions 

 of the temporal cortex. 



(h) Scatte7'ed Capsular Fibres. — To return to the internal 



^ Gerwier, op. cif. 



