THE ADRENAL BODIES 



10S 



from time to time dissected specimens of Protopterus, and has 

 examined series of sections of this fish and of Lepidosiren, but 

 has never been able to detect any organ or tissue which seemed 

 likely to correspond to adrenal cortex. If the tissue originally 

 described by Parker is in reality adenoid tissue, we should 



FIG. 24. Section of head kidney of Salmo fario showing an islet of cortical 

 adrenal tissue (anterior inter-renal) (from Giacomini). 



hesitate to ascribe to it any secretory function. The perirenal 

 tissue is, however, very extraordinary in appearance, and 

 deserves careful consideration. 



It is obvious that the subject of the adrenal bodies in the 

 Dipnoi demands further investigation. 



The adrenals of Amphibians are intermediate in many 



