118 ADRENALS, OR SUPRARENAL CAPSULES, BY C. J. EBERTH. 



The medullary cells become stained of an intense yellow and 

 brown colour, whilst the cortex remains unchanged, or, like 

 other tissues, only assumes a light yellow tint. This reaction, 

 which occurs with equal intensity in the most diverse animals, 

 is accelerated by the action of alcohol. It is of essential 

 service in enabling us to distinguish between the cortical and 

 the central cells, where it is impracticable, either through their 

 form or arrangement, to draw a precise line between the two 

 substances. 



Fig. 161. 



Fig. 161. From the adrenal of the Frog, a, Cortical cell masses ; 

 6, medullary cells. 



In Man only a slight brown tint is produced in opposition 

 to the intense staining that occurs in the Ox, Pig, Dog, Cat, 

 Hedgehog, Guinea-pig, Babbit, Mouse, and Cat ; in the Pigeon, 

 Duck, and Fowl; in the Tortoise and Lizard, and in the Frog 

 and Salamander. I have, unfortunately, only had the oppor- 

 tunity of examining the adrenals of such fish as had been 

 preserved in spirit. 



THE STROMA. From the fibrous capsule coarse processes 

 are given off, which penetrate into the interior of the organ, 



