This volume contains the substance of a course of lectures delivered by the author in the Physiologic Institute of the University of London. Besides discussing the subjects embraced in the title of the work, Buckmaster also discusses the action of hemolysins, oxygen capacity, various chemical tests of blood, the biologic differentiation of bloods by means of precipitin tests, and a variety of other subjects ordinarily not classed under the term morphology. The author gives the result of his investigations into the question of polycythemia at high altitudes. In discussing the clinical pathology of the blood he protests against the excessive importance which is often attached to counts of red blood corpuscles to the neglect of the more instructive methods of investigation. The book is to be commended.