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ENTOMOLOGY

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CONTROL OF THE HOUSE FLY AND RELATED FLIES 159PLATE VII.-Road dra,g in use scraping manure in a cow lot on a Tennessee farm.(Bishopp.)PI. ATE VIII.-Undesirable conditions which are overcome by use of the maggot trap.A manure pile covering a large area and having little depth. Illustrating theconditions which favor the greatest loss of nitrogen, and at the same time offerthe best breeding ground for flies. (Hutchison.) From U. S. Dept. Agr. Bull.BOO, Plate III.'

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