Science: Ah, Sweet Mystery

Perched on a high laboratory stool, crooning snatches of Beethoven and Mozart, an old man squinted happily through his microscope. Herbert Spencer Jennings, 76, was watching the complex love affairs of some of earth's smallest and simplest creatures.

Geneticist Jennings made his name & fame at Johns Hopkins. Six years ago he retired to the Los Angeles campus of the University of California to continue his researches into the mystery of life. There last week he was eager and happy to talk about his discoveries.

Sex among the Animalcules. Less than 1/125th of an inch long and shaped like the sole of a...

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