Powdered blood plasma, which is easier to transport than fluid plasma, probably will replace present blood banks used for transfusions in wartime, as well as in civil practice, if tests now being made prove successful. Plasma is blood to which an agent has been added to prevent clotting and from which the red-blood cells have been removed by centrifuging. In fluid form it has been as effective as whole blood for transfusions, and can be stored safely for long periods, and transported without altering, It is ready for instant use, without blood typing procedures, and can be injected fairly rapidly. The dried; powdered variety, recently developed, can be made ready for use quickly by mixing with water. Experiments are now under way to test its effectiveness, and methods of producing it in large quantities are being sought.