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University of California Puhlicaiions in Anatomy [Vol. 2 



fig-. 15), and another large injurj^ to the lower lip of the calearine 

 fissure slightly damag^ingr the cortex and also penetrating deep into 

 the subcortical white matter and cutting through the lower horizontal 

 branch of the visual radiation (marked with an asterisk, fig. 15). 

 The small injury damaged, accordingly, a small segment of the striate 

 cortex immediately in front of the ascending branch of the calearine 



FcaL 



Fig. 14, Experiment V-b. External (upper figure) and intenial (lower figure) 

 face of the monkey's hemisphere (left) showing the location and extent of the 

 injuries (areas shaded with line) to the striate area and to the visual radiation, 

 in this experiment. Small superficial lesion marked with a double cross; large 

 lesion marked with an asterisk. Stippled area represents the striate area 

 remaining normal. Calearine fissure {Foalc) ; external calearine sulcus (Sos). 

 (Compare with fig. 15, 16.) 



fissure; the large ventral lesion, extending alon^ almost the entire 

 main undivided portion of the calearine fissure, interrupted a solid 

 portion of the ventral branch of the visual radiation and thus separated 

 it from its terminal cortex in the lower lip of the calearine fissure. 



The left external geniculate body studied with particular care on 

 a continuous series, well stained with thionine blue according to Nissl, 

 showed two separate zones where the nerve cells deg-enerated (fig'. 16). 



