150 



Herrinj 



confined to the nervous part, and occurs occasionally among the cells of 

 the epithelial investment, especially where that is thickened just below the 

 neck of the infundibulum. This fact points strongly to its being a product 

 of the cells of the epithelial investment. The material is most abundant 

 in the neck and around the central cavity and in the neighbourhood of 

 the epithelial islets. 



m 





Fig. 14.— Drawing of part of the posterior lobe of the pituitary body of an adult 

 cat. From specimen fixed in Flemming's solution and stained with eosin and 

 methylene blue. 



a, cells of epithelial investment ; b, granular body ; c, e, islets of epithelial cells similar in character to 

 those of the epithelial investment ; d, colloid or hyaline body ; e, ependyma and neuroslia fibres. 



The drawing is from part of the section in the neighbourhood of the neck of the posterior lobe. 

 Granular and colloid bodies occur in close proximity to the epithelial cell islets. 



The accompanying figure (fig. 14) is a drawing of the appearances seen 

 in a portion of the posterior lobe of an adult cat near the neck of the 

 infundibulum. Several epithelial islets and scattered cells lie among the 

 neuroglial and ependyma fibres. In close relation to the cells are seen 

 masses of a hyaline or granular character. The .substance often stains very 



