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] however, the leucocytes have to be removed by centrifugation. Strict asepsis and the avoidance of airbubbles in drawing off and defibrinating the blood are indispensable. The sexual cycle has not been cultivated.

Important results are likely to accrue from Bass's discovery, particularly in the determination of species of parasite, in their morphology, in diagnosis, in the action of quinine, and also in settling disputed points in regard to the latency of malarial infections.