STUDY OF BRAINS OP SIX EMINENT SCIENTISTS AND SCHOLARS. 277 



stem and anastomosing cephalad witli the paracentral. The cuneus is marked by an 

 independent cuneal fissure and by a postcuneal fissure. 



Gyres of the Parietal and Occipital Lobes. (Lateral Surface.) — The postcentral is 

 of irregular contour and, in general, quite broad. There is not a very distinct demarc- 

 ation from the parietal gyre. Of the paroccipital gyre its caudal arm only is visible 

 upon the surface. 



The marginal gyre is less extensive than that of the left but the angular gyre of 

 this side is larger than its fellow of the left half. 



ilesal Surface. — The precuneus is smaller than that of the left and somewhat less 

 complexly marked by fissures. The cuneus does not differ much from its fellow in 

 size or contoui'. 



Fissures of the Temporal Lobe. — The supertemporal is very tortuous and much 

 ramified. Caudally it anastomoses with an exoccipital element. The meditemporal 

 is well marked and attains a length of 9 cm. The subtemporal is represented by only 

 a few small segments. The collateral fissure is 9.5 cm. in length. The postrhinal is 

 a well marked and fairly deep groove. 



Gijres of the Temporal Lobe. — The gyral development of the lobe is, on the whole, 

 cjuite similar to that of the left half There is not so marked a tendency toward trans- 

 vei-se fissuration, however, so that the identification of fissures and gyres is compara- 

 tively easy. 



The Insula. — As on the other side, the insula is not of any notable size. Further- 

 more the right insula is of somewhat simpler contour and the preinsular pole is less 

 prominent. 



Remembering the distorted condition in which the brain has come to our hands 

 the measurements herewith given are not of great value. In a general way, however, 

 they may convey some idea of the dimensions and permit one to form some judgment 

 as to the allowances that ought to be made for the displacement. The callosum, at 

 least, can be said to have suffered little change during the stages of preservation. 



Length of cerebrum ......... 16.8 



Width of cerebrum 14.1 



(Cerebral Index 84.) 

 Semi-circumference (i^ach half) ....... 24. 



Length of callosum ......... 8.0 



(or 47. () per cent, of cerebral length). 



