The routine examination of material from the empty stomach in the morning discloses a small pale yellowish or greenish residue, somewhat cloudy, containing mucus and a little cell débris. We are told by Loeper,1Zweig,2Kemp,3Wolff,4Strauss,5Riegel5and Soupalt5that in health this residue should not exceed 20 c.c., and that there should be no macroscopic food-residues. It is true that occasionally the microscope discloses fatglobules, cells with their protoplasm digested and their nuclei set free, and rarely vegetable-fibers or meatfibers, but no macroscopic residue is forthcoming. This is the common finding with the stomach-tube, and the results recorded have gone unquestioned. Only recently Harmer and Dodd,6by careful Roentgen studies, pointed out that we are by no means sure that the stomach-tube reaches the lowest point of the stomach. In other words, they showed that the stomach-tube, even when