Abstract
AS the subject for this lecture, I have chosen to discuss some fascinating clinical and biologic relations existing between the three elements in the title. At the present time, I am actively engaged in studying these relations, for I believe that they will prove to have important bearing upon the interpretation and management of decreased carbohydrate tolerance in a large number of patients. Later, I shall show some preliminary and, as yet, unpublished data dealing with an important mechanism by which carbohydrate tolerance is impaired in a large number of people. But it would be well, first, to indicate whence . . .