290 



STUDY OF BRAINS OF SIX EMINENT SCIENTISTS AND SCHOLARS. 



Principal Measurements of the Cerebrum. 

 (After Hardening.) 



Maximum length, left hemicerebrum. .... 

 Maximum lengtli, right hemicerebrum .... 

 Maximum width of cerebrum ...... 



(Cerebral Index, 81.8.) 



Horizontal circumference . 

 Maximum width, left hemicerebrum . 

 Maximum width, right hemicerebrum 

 Left occipito-temporal length 

 Right occipito-temporal length . 

 Length of callosum .... 



(or 43.7 per cent, of total cerebral length) 

 Left olfactory nerve, length. 

 Right olfactory nerve, length 



Arc Measures Along the Dorsi-mesal Margin 



(Cunningham's Method.) 



Left Hemicerehrum. 



1. Cephalic point to central fissure 



2. Central fissure to occipital fissure . . . . , 



3. Occipital fissure to occipital pole 



Right Hemicerehrum. 



1. Cephalic point to central fissure 



2. Central fissure to occipital fissure 



3. Occipital fissure to occipital pole 



Cerebral Indices. 

 (Based on the arc measures given above.) 



Centimeters. 

 . 16.5 

 . 16.4 

 . 13.5 



47.3 



6.8 



6.6 



12.8 



13.0 



7.2 



3.2 

 3.6 



Centimeters. 

 . 1.5.5 

 3.1 

 . 5.0 



15.5 

 3.0 

 5.0 



Fi-ontal index 

 Parietal index 

 Occipital index 



Left. 

 65.6 

 13.1 

 21.2 



Right. 

 65.9 

 12.8 

 21.3 



Horizontal Distances, 



Ex-pressed in Centesimals of the Hemicerebral Lengths. 



I For description of the method by which these measurements were made, see the chapter 

 ' Brain measurement" in the introduction of this memoir. ) 



Left. 



g. 



From the Cephalic point to — 



1. Tip of temporal lobe . 



2. Sylvian-presylvian junction 



3. Ventral end of Central f. . 



4. Sylvian-episylvian junction 



5. Caudal point 



Right. 



