STUDY OF BRAINS OF SIX EMINENT SCIENTISTS AND SCHOLARS. 257 



Cerebellum — Pons, Oblongata. — These parts all show a good degree of develop- 

 ment. A notable feature is the great size and massiveness of the pons and parts con- 

 nected with it. The postgemina are smaller, but stand out higher, while the prse- 

 gemina are larger, Ijroader and more rounded off. 



The cerebellar peduficles, particularVy the pre- and medipeduncles are seen, on 

 section, to be of great massiveness. 



Measurements of the Cerebellum. 



Centimeters, 



Maximum height .......... 5.6 



Maximum cephalo-caudal diameter, left hemisphere .... 6.4 



Maximum cephalo-caudal diameter, right hemisphere .... 6.5 



Dorsal length of vermis ......... 3.6 



Maximum depth, caudal iucisure. ....... 1.5 



Maximum lateral width ...... ... 10.1 



Measurements of the Pons. 

 Maximum length .......... 2.9 



Maximum thickness .......... 3.0 



DR. PHILIP LEIDY. 



Born in Philadelphia, December 29, 1838, son of Philip Leidy and Christiana 

 Taliana Mellick.* ^\'ith the exception of his paternal grandmother, Catherine Le 

 Febre, the sister of Francis Joseph Le Febre, Duke of Dantzig, Marshal under Napo- 

 leon I, he was of German extraction. The original Carl Ludwig Ivcidy (Leydig) emi- 

 grated to America in 1727 from the Rheinish-Palatinate (Oberstein). 



Dr. Leidy's grandfather, .Jacob Leidy, served in the American Revolution as 

 Ensign, 1777-1778 ; subsequently promoted to First Lieutenant in Capt. .John Cope's 

 Company, Pennsylvania Line. His great uncle. Dr. .John Leidy, was commissioned 

 Surgeon in the American Revolution, in the command of Col. Timothy Green, Penn- 

 sylvania Line. His father, Philip T^eidy, served in the war of 1812 and Mexican war, 

 1845. 



* Joseph and Philip Leidy were half-brothers whose mothers were half-sisters. The relationship may be shown as 

 follows : 



^ brothers 



Peter Mellick X Miss Clingraan Michael Mellick X Miss Christian 



Catherine Mellick Christiana Mellick 



John Jacob Leydig > Catherine LeFebre 



1st Lieut. Amer- sister of Francis Joseph LeFebre 



ican Revolution ; j (Duke of Dantzig) 



Pennsylvania Line. 



/XCatherine Mellick 

 Philip Leidy 1st/ 



^XChristiana Mellick 

 Catherine was Joseph's mother while Philip Leidy II. was the sou of Christiana. 



