68 



SPITZKA— PRELIMINARY NOTE 



[April 23, 



Percentage of callosal length 44-7% 



Left centro-temporal height 9.2 



Right centro-temporal height 8.7 



Left centro-olfactory height 8.2 



Right centro-olfactory height 8.0 



Arc Measures. 



{Frontal 16.0 



Parietal 4-5 



Occipital 5-5 



f Frontal 16.5 



Right i Parietal 5-0 



i Occipital 5-0 



Cerebral Indices. 



Frontal 61.5 



Left ^ Parietal 17.3 



Occipital 21.2 



Frontal 62.3 



Right ] Parietal 18.8 



Occipital 18.8 



Horizontal Distances (in Centesimals). 

 From Frontal Point to : 



1. Tip of temporal lobe 25.1 



2. Sylvian-presylvian junction 30.3 



3. Ventral end of central fissure 41.8 



4. Sylvian-episylvian junction ? 



6. Frontal edge of callosum 20.0 



7. Porta (Foramen of Monro) 38.2 



8. Dorsal end of central fissure 



9. Dorsal intersection of paracentral fissure 65.4 



10. Caudal edge of callosum 64.4 



11. Occipito-calcarine junction 81. i 



12. Dorsal intersection of occipital fissure 83.2 



1. Tip of temporal lobe 24.6 



2. Sylvian-presylvian j unction 28.2 



3. Ventral end of central fissure 41.3 



4. Sylvian episylvian junction 55.0 



6. Frontal edge of callosum 18.3 



7. Porta (Foramen of Monro) 37.7 



8. Dorsal end of central fissure 61.2 



9. Dorsal intersection of paracentral fissure 63.8 



10. Caudal edge of callosum 63.8 



11. Occipito-calcarine junction 75.4 



^ 12. Dorsal intersection of occipital fissure 87.4 



Cross-section area of callosum = 5.02 sq. ctm. 

 Jefferson Medical College, 

 Philadelphia. 



Left 

 Lateral 

 Aspect 



Left 

 Mesal 

 Aspect 



Right 



Lateral 



Aspect 



Right 

 Mesal 

 Aspect 



