This small volume presents first a brief discussion of the ulcer syndrome. The authors divide the expressions of gastric ulcer into four types: the dyspeptic or painful form; the hemorrhagic form; the form in which vomiting occurs, and the classic form, which, they add, is decidedly rare. The roentgenologic findings and the laboratory examination are then discussed. The next chapter is devoted to the complications of peptic ulcer; it is divided into six main heads according to the various types of complications that may occur. The last of these complications discussed is that of cancerous degeneration of the ulcer; it is noted that Americans claim that from 40 to 70 per cent of gastric cancers result from preexisting ulcers, whereas the French consider the proportion to be not more than from 3 to 5 per cent. The third chapter is on the diagnosis of the disease, and the succeeding four