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Show THE FEMALE HOUSE FLY. A female house fly which has hibernated hiber-nated in a dwelling' houso, or elsewhere, else-where, may produce in tho spring, at the lowest estimate, 120 eggs, Assuming As-suming that one-half of these hatch as females, and allowing that tho breed- ;, M ing goes on without check for four months, we have as tho descendants RRRJ of a single hibernating individual 214.- 557,841,320,000,000,000,000 flies. :Now, a house lly measures exactly one- i ! fourth of an inch in length; the dls- I j tanco around the oarth at the equator I BBJ is said to bo 24300 miles. It would 1 RRRJ take, therefore, 3,688.312,000 flies I H placed end to end to go around the W. V world once. Using this number as a Rfl denominator, and the number of flies i BH produced in four months as a numer- Rfj ator. we find she will give rise in f M the course of a summer, to enough m files to encircle the globe at the i R equator 5,000 times, and hayo plentj I RRRJ of progeny to spare !Prof. K L. I H Washburn in Popular Science Month- lgffl Hrm |