of Sydney,3 embracing 144 cases since 1893, is quite exceptional, and therefore valuable. In an introductory chapter to his book on the Diaynosi and Treatment of IebtuHsaseptiora he traces the history of the operation of laparotomy for the condition, giving to Mr. A. E. Barker the credit of first showing the importance and value of early operation. The second chapter deals with the etiology and pathology and the varieties of intussuqception. It is interesting to find that the most frequent

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... ing point in the author's cases was the caput caeci. He advocates the adoption of a fresh -classification at the risk (f a somewbat complicated nomenclature, and that which he and otber recent writers recommend certainly has this -feature. It may well be asked. whether it is neeeEsary to load the textbooks and the memory with the terms "colicileo-caecal," "1 caeco ileo-caecal," " enteric ileo-caecal." Surely all that is necessary is to indicate what portion of the bowel forms the head of the primary intussusception and into what segment it is invaginated. Should-not an example in which the head of the intussusception is the caput caeci be named caeco-colic, and not either colicileo-caecal (Corner) or caeco-ileo caecal (Clubbe)? Such nomenclature leads logically to such terms as ileo-caecocaeco-colic, and even worse than this. The two chapters on the clinical course and the diagnosis of the affection are most valuable. Tlle history, of onset as told by the mother, and the subsequent vomiting, straining, and crying are held to be clear enough in most cases to raise a strong suspicion if sufficient attention is paid to them, and the almost invariable paesage of blood makes the, diagnosis, as the author says, morally certain. Paseage of blood by the bowel was recorded in all but 6 of Mr. Clubbe's 144 cases. The most interestiog chapter of all is that in which the results of treatment are recorded. The author used iijection in all . his cases before operation, but never unless prepared to go on with the operation forthwith. Out -of 133 cases he only sent 16 back to the ward without opening the abdomen. He does not expect reduction by injection in more than a small proportion of cases, but he considers the method of much value in diminishing the extent of the intussusception, and in this way a valuable adjunct to operation. It is impossible to notice here all the important point3 of which the author treats; his record of 124 laparotomies with 84 recoveries is enough to show how well fitted he is to speak authoritatively on the subject, and his monograph will, no doubt, attract much attention.