Word: saria
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Dates: during 1940-1940
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...lives in ponds and puddles. In the one-celled kingdom the paramecium is a giant, just visible to a good, sharp, naked eye. For three years Dr. Herbert Spencer Jennings, distinguished University of California at Los Angeles zoologist,* has been watching a thousand generations of one species, Paramecium bur-saria, under his microscope. Last week he told about his paramecia's mating habits...