An Analysis of the Juxta-Neural Epithelial Portion etc. 261 



tliey contain the nnclei tuberis of Kölliker and part of tlie supra- 

 optic ganglia. The eminentia saccularis is a relatively thin walled 

 diverticulum from the floor of the third ventricle. It contains, at its 

 cephalic extremity, a nucleus of large sized nerve cells in addition to 

 many scattered groups of smaller cells. It is with the saccular 

 eminence of the tuber cinereum that the pars tuberalis of the pituitary 

 gland attains its important relations, while from the eminence itself 

 the infundibulum projects ventrad to terminate in the expanded in- 



Fig. 1. 



fundibular process. These reasons establish the grounds for the state- 

 ment already made, that the neural portion of the hypophysis comprises 

 three elements which are the eminentia saccularis of the tuber cinerum 

 the infundibulum and the processus infundibuli. 



In text figures 1 and 2 relations of the several neural and glan- 

 dular parts are shown, somewhat schematized, as they appear in man. 

 Fig. 1 is based on the conditions observed in a 5 months fetus. Fig. 2 

 illustrates the adult relations and shows the hj^pophysis in a more 

 dependent position than in the fetus. It will be observed that the 

 fetal relations are in all respects similar to those in the adult cat 

 and dog (plates I and IV, figs. 1 and 2). The changes which appear 

 in the human adult are in greater part the result of a ventral 



