Word: studving
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This protoplasmic streaming interests Dr. Seifriz immensely. The movements of Physarum show a definite pulse, not unlike that of a beating heart. With inadequate motion-picture equipment at Philadelphia, he was not able to see this living rhythm until he went to studv at the Pasteur Institute in France where films had been made and slowed down 100 times. The Physarum pulse was seen to have a period of about 45 seconds. Dr. Seifriz rejects the older theories attributing protoplasmic movement to surface tension, electric potentials, etc. "I ask the reader," he wrote recently in Science, "merely to admit that...
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