Although this is a new edition of an old book, the lapse of time since the publication of the fifth edition ten years ago has necessitated rewriting so many parts that almost a new book has been produced. The essential feature of previous editions, however, has been retained, in that the book still remains a manual of surgery, marked by brevity, simplicity and precision of statement. Unessentials and long discussions, rather than important facts, are omitted. The general plan of the book is that usually followed by most textbooks on surgery. The first chapter is on diagnosis. It emphasizes the importance and value of a careful history and how to obtain it. This is followed by precise instruction on how to perform a thorough physical examination as well as on how to evaluate the laboratory aids. Anesthesia is discussed completely in the next chapter, including ethylene, sodium amytal and "Avertin."