THE CORPUS STRIATUM. 



767 



When the .sections are carried to a little lower level than has so Consists 

 : been done (and this should now be done by removing thin slices 



FIG. 278. MIDDLE PART OF A HORIZONTAL SECTION THROUGH THE CEREBRUM 

 AT THE LEVEL OF THE DOTTED LIKE IN THE SMALL FIGURE OF A 

 HEMISPHERE IN THE TOP LEFT-HAND CORNER OF THE FIGURE 

 (AFTER DALTON). 



ccg. Genu, and cc spl. Splenium 

 of corpus callosum. 



f. Foruix ; the septum lucidura, 

 containing the fifth ventricle between 

 its layers, unites the fornix with the 

 corpus callosum. 



Iva. Anterior, and Ivi. Descending 

 cornu of the lateral ventricle. 



en. Caudate nucleus, head, and 

 en', tail. 



ts. T?enia seinicircularis. 



o th. Optic thalamus. 



th. Taenia hippocampi. 



h. Hippocampus major. 



ica-. Anterior limb. icg. Genu, and 

 icp. Posterior limb of the internal 

 capsule. 



In. Lenticular nucleus. 



ec. External capsule. 



cl. Claustrum. 



i. Island of Reil. 



Sy. Deep part of fissure of Sylvius. 



of the lenticular nucleus only by horizontal sections) it will be putanien, 

 found that the nucleus consists of three parts : an outer larger and 

 more deeply coloured portion the putamen and two inner, paler 



