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JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 17 
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Fig. 13. Graph showing daily egg, fly and flax-seed records at the Monona County 
District Station, Onawa, 1923 
fly-free-date was announced October 2, seven days before the fall 
brood had entirely disappeared. 
Appanoose county station, Udell, 1923:—A total of 9,005 eggs were 
