750 of suppuration in connexion with a swelling is very strong evidence against the presence of a malignant growth, but the author relates many cases in which this unusual complication occurred. The paper on Displacements and Injuries of Muscles and Tendons is also very important. Tendons are dislocated much more frequently than is usually imagined, and it is necessary that the surgeon should be well acquainted with this condition, for such cases often drift into the hands of bone-setters who
... bone-setters who by manipulation reduce the displacement. The same chapter deals with rupture of muscles and tendons from muscular contraction, and many interesting cases are related. Another section is devoted to "rare forms of bony ankylosis," and Mr. Marsh shows that ankylosis occurs under many conditions in which it was formerly thought impossible ; especially he relates cases which demonstrate that antecedant suppuration is not necessary for the occurrence of ankylosis. In conclusion he points out that passive movements cannot prevent bony ankylosis, rather by maintaining irritation and promoting inflammatory exudation they are likely to hasten its appearance. We have not space to mention in detail all the papers contained in this volume, but we cannot refrain from expressing our approval of the chapter headed the Etiology of Mistakes in Diagnosis. Every surgeon makes mistakes, some of them preventable, others inevitable, but mistakes would be rarer if attention were paid to the points mentioned in this chapter. The whole volume is full of interest and will well repay perusal.