516 WILLIAM H. F. ADDISON 
Fig.13 Anterior portion of section 181, as shown in figure 6. Shows the cor- 
pus callosum and fornix cut through twice. Beneath the more caudal part of the 
corpus callosum (corp.call.) the body of the fornix (for.) is seen as a flattened 
band. The fornix is again cut in the septum pellucidum (s.p.) near its free mar- 
gin. The taenia semicircularis (¢.s.) is seen in the groove between caudate nu- 
cleus (n.caud.) and optic thalamus (thal.op.). The massa intermedia (massa 
interm.) is cut through its most frontal portion. X 2. 
c.e., external capsule; caps.int., internal capsule; cl., claustrum; corp.str., 
corpus striatum; f.m., foramen of Monro; fron.cort., frontal cortex; gy.cing., 
gyrus cinguli; n.lent., nucleus lentiformis; v.l., lateral ventricle. 
