Cancer always extends beyond the area of induration, for while the limit of induration may be the diseased mucosa, the sub-mucosa may be involved in growth for some distance beyond, and only scattered groups of cells yielding-no evidence to the touch can be discovered on microscopic examination. It follows, therefore, that any effort at extirpation must go fully an inch beyond the margins of the tumour. It is specially important that the removal should be wide of the disease on the cardiac side of the tumour, and that the lymphatic area along the lesser curvature should be removed.