This excellent study of blood proteins covers their chemistry, methods of study, reactions, clinical significance, diseases in which there are quantitative or qualitative abnormalities, mechanism of production and therapeutic problems. The data obtained by electrophoresis and ultracentrifugation are presented and analyzed, and the subject of sedimentation rate of red blood corpuscles is discussed in detail. The material is well presented and covers a remarkable amount of chemical and clinical data. The bibliography is quite representative and the references are brought up to 1946. The book is beautifully printed and well edited. It will no doubt become one of the standard practical reference works on the subject.