To first-year biology students, the amoeba is one of the oldest, simplest and most fascinating forms of animal life. To men of the U.S. armed forces on duty in countries where sanitation is primitive, the amoeba is a treacherous foe which can infiltrate their digestive tracts and cause dysentery or death. Last week 1,490 employees of the Singer Manufacturing Co.'s plant in South Bend, Ind. found themselves, with their families and friends, in all-out war against the lowly amoeba, with no truce in sight.
Perhaps one out of every ten in the U.S. population carries a few amoebae in his bowels for...
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