This book is number 42 of the practical medical series published by Julius Springer. It is on hemorrhagic diseases. The first part deals with the physiology of the platelets and the function of the capillaries. The hemorrhagic diathesis is divided into hemophilia, purpura abdominalis, purpura fulminans, Werlhof's purpura, Schönlein-Henoch's type of purpura and hemorrhagic disease of the new-born. The symptoms and prognosis are given. The final part deals with the treatment, and the various procedures are briefly summarized. While there is nothing particularly new in this work, it presents the subject in a compact, readable form.