This work offers a concise, practical account of the whole subject of blood transfusion, beginning with historical development and moving to clinical indications such as haemorrhage, shock, haemorrhagic and other blood disorders and toxæmias; it examines risks and complications, explains the physiology and pathology of blood groups, outlines criteria for selecting donors, and provides detailed, practical methods for performing transfusions by simple efficient techniques, concluding with an extensive bibliography for further reference.