Fig. 52. OBLIQUE-TRANSVERSE SECTION THROUGH CEREBELLUM, CORPORA QUA- 

 DRIGEMINA, AND CEREBRUM. Viewed from in front (the under side). a, Optic thalamus. 

 6, Posterior commissure, c, Roof of the aqueduct of Sylvius, d, Under surface of the 

 corpora quadrigemina. <?, Superior peduncle of cerebellum. _/", Under surface of the 

 valve of Vieussens with the lingula. g, Fourth ventricle, h, Corpus dentatum 01 

 cerebellum. 



