104 



FREDERICK TILNEY AND LUTH10H ! . WARKK.N" 



actual ganglionic cells is doubtful. Some cells observed by 

 Hill ls " in 1894 have very long processes. Studnic-kn 386 observed 

 that whatever the character of the cells of the end-vesicle may 

 be, whether special sensory or not, the entire organ is not a 

 gland. By this he does not deny the possibility that the struc- 

 ture may bo in part glandular. Galeotti M " in 1896 found some 





.....Epid 



Cor 



Po 



Fiji. ~}\ The opiphyseal complex in Anguilla fluviatilis. according to Lcydifr, 



L896. 



I'., velum t rinisvcrsuiii; I)N., dors:tl sac; !'<>., pincnl organ: St., stalk. 



<-vi(lcuce of secretory activity in the c<41s of the pineal organ in 

 tliese forms. In Lciicixcus, he observed nuclei which had fuch- 

 sinophile grannies and also nucleoli which later app-ared in the 

 protopla-in. The product, of this secretion was, in his opinion, 

 delivered to the lumen of the end-vesicle which is completely 

 surrounded by blood vessels. The stalk, when definitely pres- 



