390 OLIVER S. STRONG 
Fig. 18 Transverse section through the level of the inferior colliculus. Wei- 
gert-Pal. 33, left central tegmental tract; 34, medial lemniscus; 42, uncrossed, 
crossing and crossed fibers of the right superior cerebellar peduncle; 44, some 
fibers of the left superior cerebellar peduncle; 50, inferior colliculus; 41, left pes 
pedunculi; 42, right pes pedunculi; 53, left substantia nigra; 54, right substantia 
nigra; 55, abnormal fibers in dorsal central gray. 
Fig. 19 Transverse section at the junction of midbrain and thalamus. Wel- 
gert-Pal. 41, left pes peduncul1; 53, left substantia nigra; 56, left nucleus ruber. 
Fig. 20 Transverse section through the thalamus at the level of the optic 
chiasma. Weigert-Pal. 451, left pes pedunculi; 56, left nucleus ruber. 
