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FIG. 90. Top. Some of the offspring grown from seeds from one tree. This, picture proves, the, worthlessness of planting seedlings and, suggests valuable results to be obtained by plant breeding. (Courtesy Journal of Heredity.)—FIG. 91. Bottom. Tree crop land. Rich hills of southern Ohio. Excellent for oaks, hickories, pecans, mulberries, persimmons, honey locusts, cherries, and many other crop trees. Land now almost unproductive. We have millions of hills like this. (Photo F. II. Ballou.)
