GO E. V. COWDRY 



suprarenal glands and in association with organs, like the sex glands, 

 which originate near them. 



Their Formation. During the course of the embryonic development 

 of the suprarenals the ingrowth of medullary elements, as described in 

 later paragraphs, frequently results in the splitting off of portions of 

 the organ, resulting in the formation of accessory suprarenals, which 

 usually remain in the neighborhood of the parent organ. Occasionally, 

 however, they become associated with structures that change their position 



Fig. 1. Anterior surfaces of human suprarenal glands, after Cunningham. 



in the course of development. In this way their association with the 

 spermatic vessels and epididymis, and with the ligamentum latum of the 

 female is explained. 



Zuckerkandl(fr) has shown that accessory suprarenals may also be pro- 

 duced by the separation of portions of the cortex, which, on this account, 

 iire often composed of the zona glomerulosa alone. They are found em- 

 bedded in the substance of the principal organs, or scattered over their 

 surface, and should not bo confused with adenomata. The reasons for the 

 separation are not so well understood. It is probably brought about by 

 the migration of the cells, with an intervening deposit of connective tissue. 

 Biedl thinks that they should be called "accessory interrenal bodies," 

 since they consist for the most part of cortical or interrenal substances. 



Meyer has recently discovered a well formed intracranial adrenal, 



