THE FULLY DEVELOPED HUMAN PINEAL ORGAN 4OI 



pia mater in the form of small rounded cells, with deeply stained nuclei, 

 which afterwards assume amoeboid characters and migrate into the deeper 



Fig. 269. — Pineal Gland of a Woman aged 40. (After R. Amprino.) 



mm 





1.x *? 



> -f) " , 



• » ', '/• 



t 



■ . 

 r »• 



Fig. 270. — Pineal Gland of a Man aged 76. (After R. Amprino.) 



central parts of the organ, and there may develop a phagocytic function. 

 There remain to be considered certain non-cellular elements, namely, 

 a supposed intercellular substance ; forming what has been termed a 

 26 



