SECRETION OF THE DUCTLESS GLANDS. 807 



name " rennin," is normally secreted by the kidney into the renal 

 blood, and that this substance causes a vasoconstriction. Other 

 observers claim that the kidneys furnish an important internal 

 secretion that affects the metabolism. The absence of this secretion 

 after complete nephrectomy leads to the production of uremia.* 



* Suner, " Zentralblatt f. d. ges. Physiol. u. Path, des Stofferechsel, " 

 1907, ii., 3. 



