V] 



Distribution of Vixttu-Si'iixort/ an<f Visuo-Psi/ehic Areas 



119 



FIG. 11. 



Drawings to illustrate the distribution of the visuo-sensory (cross-hatched) and visuo-psychic (clotted) areas iu the 

 human being and orang. The three figures to the right are from the ape, and the wide lateral extension is 

 to be specially noticed ; observe, also, that the visuo-sensory area closely follows the fissure marked E. ., the 

 so-called "external ealcariue" fissure (the sulcus intrastriatus lateralis of Elliot Smith), and that the visuo-psychic 

 field is closely related to the " Affenspalte " (A. F. S.). In the human brain the ramus occipitalis transversus 

 (B. Occ. T.) seems to form a corresponding visuo-psychic limit. 



Ca . = calcarine fissure. Stem is placed above the division distinguished by that name. Col. = collateral fissure. 

 P. O. = parieto-occipital fissure. C. A/. = calloso-marginal fissure. L. 0. = lateral occipital fissure of Eberstaller. 

 8y.= Sylvan fissure. P. = superior polar fissure of Bolton. x = inferior polar fissure of same writer. 



