STROMA OF THE ADRENALS. 



119 



and separate off or isolate certain territories of the parenchyma 

 (cortex). From their sides they give off fibres continuous with 

 the lateral processes of more delicate columns of connective 

 tissue, which again intercommunicate with each other. Between 

 these trabeculse are rounded or elongated spaces, filled with 

 irregular masses and columns of cells. In the cortex the 

 thicker connective-tissue columns quickly break up into a very 

 delicate framework with regular polygonal meshes, each of 

 which contains a cell. 



The stroma in the medulla is still more sparing in quantity 

 than in the cortex. It here only forms an investment to groups 

 of cells. 



I have not been able to discover any proper investing mem- 

 Fig. 162. 



Fig. 162. a, Connective-tissue columns from the most external 

 cortical layer of the adrenal of the Ox ; 6, parenchyma cells. 



branes surrounding the cell masses, such as have been described 

 by Grandry, Henle, and others, even after maceration in acids 

 and alkalies. It is possible that they mistook for these mem- 

 branes fine membranous septa of connective tissue, or the walls 

 of the bloodvessels, which often lie in immediate apposition to 

 the cell masses. 



