474 THE BRAIN OF MAMMALS, BY TH. MEYNERT. 



mation for it of a medullary capsule (figs. 255, 256, 0), and 

 enter, by pursuing a transverse course, into its grey sub- 

 stance, with the nerve corpuscles of which they probably 

 unite. Besides this decussating connection with the corpus 

 restiforme, the dentated nucleus of the superior olivary body is 

 also directly connected with the cerebellum by means of fas- 

 ciculi running straight backwards through the internal division 

 of the peduncle of the cerebellum, which proceed from its 

 capsule, and cannot, on account of their size, be overlooked in 

 animals (fig. 256, kl). They are to be regarded as probably 

 forming the continuation of the fasciculi entering the olivary 

 body from the corpus restiforme, and emerging after a compli- 

 cated course around and through the former. 



I cannot suppose that the knowledge of the connections of the 

 superior olivary body has been exhausted in the foregoing account. 

 For we may observe delicate fasciculi, proceeding especially from 

 the neighbourhood of the trapezoid body, and ascending to the external 

 border of the nucleus dentatus superior of the same side, which do not 

 form any link of the chain above described, and cannot be traced with 

 certainty into the restiform body. 



3. The third or inferior interlacement of the peduncle of the 

 cerebellum includes the inferior olivary body (figs. 257, 258). 

 The general relations of its connections are, however, by no 

 means so obvious as those already described of the region of 

 the superior olivary body. I see in it a true measure of the 

 ability of Otto Deiters as an observer, in the circumstance that 

 he penetrated these surprising connections, and that, with cer- 

 tain reservations and modifications, we must acknowledge his 

 views to constitute the key to the right understanding of the 

 structure. 



Stilling, Lenhossek, and Schroder, and with still more perfect 

 fidelity Clarke, had indeed described the course of the fibrse 

 arcuatse in their upper and lower divisions, their connection 

 partly with the external, partly with the internal division of 

 the peduncle of the cerebellum, and their course through the 

 olivary body ; but before Deiters no observer imagined that the 

 corpus restiforme, with the anterior divisions of the fibrse arcuatse 

 and the cuneate and slender columns in the posterior column 



