THE ADRENAL BODIES 107 



kidney and forming alveoli, whose cells stain black with osmic 

 acid (see Fig. 25). Quite recently Giacomini has described 

 chromaphil elements in the walls of the cardinal veins and the 

 venae renales revehentes. 



The question as to the existence of adrenal bodies in the 

 Dipnoi has long been under discussion. In Protoptcms 



mi^iimmi^^ 



* <f.>. : *H?~ , ' 



'' ; ff"''-SlS 3 ', 



%' \'- r . ; --,V : ' V 

 ^^ ** * 



" V > \ 



I v* 



' v 



FIG. 22. Transverse section through one of the paired bodies of Torpedo 



(from Kohn). 



annectens Parker describes " around the kidney, but more 

 particularly along its dorsal and outer sides, masses of brown 

 cells, which in appearance remind one of the adrenal bodies of 

 Amphibia," and he suggests the inquiry " whether they or the 

 lymphoid cells which give rise to them have anything to do 

 with the adrenals." In 1895 the present writer examined this 

 point with some care, and came to the conclusion that this 



