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The lines on figure 5 indicate Thats What I Do I Go Camping I Drink Beer I Hate People shirt .the average dates of the first killing frost in the fall, and these dates, given at the ends of the heavy lines, are of direct value to the beekeeper as giving the proper time for putting on the winter cases. tshirtclassicThe average dates of the last killing frost in the spring do not show exactly the same lines on the maps, but the differences are not sufficiently great to justify the use of a separate map for this purpose. The authors have chosen therefore to divide the country into the zones indicated, and the recommendations given below apply to each of the zones shown.Great confusion has existed among beekeepers as to the right time to pack the bees for winter, and especially as to the right time to remove the packing in the spring. It is quite possible to give definite directions for both procedures and to place the recommendations on a firm foundation by basing them on weather phenomena. The maps (figs. 5 and 6), showing the time of the first average killing frost in the fall, serve as a basis for the recommendations for each « 15 » of the zones into which the map of the eastern United States is divided.
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