STUDY OF BRAINS OE SIX EMINENT SCIENTISTS AND SCHOLARS. 241 



Precuneus. 



Callosal (in part). 

 Fissures of the temporal lobe : 

 (Ventro-lateral surface.) 



Supertemporal. 



Meditemporal. 



Subtemporal. 



Collateral. 



Postrhinal (or amygdaline). 



Hippocampal. 

 (Dorsal or sylvian surface.) 



Transtemporals. 

 Gyres of the temporal lobe : 



Supertemporal. 



Meditemporal, 



Subtemporal. 



Subcollateral. 



Subcalcarine. 



Transtemporals. 

 The insula : 



Preinsula. 



Postinsula. 



Circuminsular fissure. 

 Transinsular fissure. 

 Insular fissures. 



JOSEPH LEIDY. 



Born in Philadelphia, September 9, 1823, son of Philip Leidy and Catherine 

 Mellick. Joseph Leidy was the third of four children by this marriage. When but 

 a year and a half old he experienced in the death of his mother a loss that would be 

 usually regarded as irreparable. His father, however, in marrying shortly afterwards 

 Christiana, the sister of his first wife, gave to Joseph one of whom he said upon one 

 occasion, " I knew no other mother; to her I owe every advancement in life." 



Joseph Leidy's early education was obtained at private schools. From his earliest 

 days he was a great lover of nature and many authentic stories are told of days and 

 months spent in the open air in the study of animal life in all its forms. At the age 

 of nineteen he began the study of medicine at the University of Pennsylvania, grad- 



