THE ADRENAL BODIES 



103 



the only representatives of cortical adrenal substance in 

 teleostean fishes. He has worked out the subject especially 

 in many fishes of the eel tribe, and finds isolated bodies on the 

 cranial border of the "head kidney," on the anterior and 



Carotid ciirrt 



Dog, rzK. 



Jan.ZJ, 1S97. CHcl 3 . 



Morphia ( 3 min.of sol. igr, insmin.) 



Atropinet 3mm.of 1 % sol.) 



Signal. 



Tune tracing (seconds). 



FIG. 17. Effect of injections of 1 c.c. of extract of " inter-renal " (1 in 25) 

 taken from ScyUium canicula. It will be seen that there is a certain 

 small rise of the arterial blood -pressure. This is not at all comparable 

 with that produced by an extract of the " paired bodies " (sfee Fig. 16), 

 and is to be explained by the fact that in extracting the inter-renal from 

 the body, it is almost impossible to avoid removal also of some of the 

 " paired bodies." 



posterior cardinal veins, which he considers are to be regarded 

 as of the same general nature as the corpuscles of Stannius, 

 though they present certain slight differences (Figs. 20 and 24). 



