406 



THE BRAIN OF MAMMALS, BY TH. MEYNERT. 



between them, as they do not lie in contact with one another 

 in their course towards the temporal lobes (Luys). The upper 

 lamina of the spleniuin thus forms, as the tapetum, the 



Fig. 242. 



Fig. 242. Transparent sagittal section of the brain of the Dog through 

 the external olfactory convolution. F, The frontal extremity ; 0, the 

 occipital extremity of the cerebral hemisphere ; T, transverse section 

 of the inferior fasciculi of the body of the corpus callosum ; Sub A, 

 Sub, occipital and temporal portions of the cornu Ammonis ; the con- 

 necting link, convex externally, between the two fragments has been cut 

 off at the outer margin of the crus cerebri ; Ra, the external olfactory 

 convolution ; m, the superficial medulla of the same (proceeding from 

 the bulbus) ; m', medulla of the external olfactory convolution ; Cl, 

 claustrum ; L 1 , L 11 , L 111 , the links of the lenticular nucleus ; Ag, 

 nucleus of the amygdala ; m 2 + mf, fusion of the medulla of the ol- 

 factory convolution with that of the uncinate convolution ; Ret, sub- 

 stantia reticularis fusing with the superficial medulla of the olfactory 

 convolution ; c, the portion of the anterior commissure belonging to 

 the hemisphere ; n, optic tract ; NC, nucleus caudatus ; Th, Thalamus 

 opticus ; P, the foot of the crus cerebri, crusta of the peduncle. 



external wall of the ventricle (Eeil) (fig. 243, T'). The 

 manifold and delicate interweaving of the mass of the cor- 



