Chicago, Jan. 22, 1904.
To the Editor:
—In an able editorial published in a recent issue of The Journal (1903, p. 1480) you call attention to Cohnheim's discovery that the pancreas mixed with muscle tissue possesses the power of destroying sugar, and you properly emphasize the fundamental importance of this finding inasmuch as it aids in interpreting the rôle of the pancreas in sugar metabolism and diabetes. You also say, "Of course this does not preclude the possibility of a similar combined effect with substances in other tissues of the body where sugar is burned." As a matter of fact, another investigator, working simultaneously with Cohnheim, discovered that pancreas and liver combined also possessed sugar-destroying powers. You lay particular stress in this editorial on the fact that the pancreas alone, or the different tissues of the body alone, can not destroy sugar, whereas the addition of pancreas to different organs