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During the past two decades man has learned much about the life cycle and the physiology of his own four species of malaria as well as those of other mammals, birds, and reptiles. The electron microscope has provided a fund of morphological detail, and biochemists have answered many questions concerning the nutrition of the parasite and its resistance to chemotherapy. The use of malaria's fever in the therapy of paresis and animal studies have advanced our understanding of immunity and chemotherapeutic response. The exo-erythrocytic portion of the life cycle explains some of the perplexing clinical facets of the disease. Professor Garnham, who has made many outstanding contributions to our knowledge of malaria, brings together not only the wealth of new but also the important old research on malaria that goes back four centuries. Laveran, Ross, Grassi, and Danilewsky live again on these pages. He paints in beautiful detail (with numerous
H. W. Brown (Mon,) studied this question.