Page:Tree Crops; A Permanent Agriculture (1929).pdf/32

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Photos J. Russell Smith Fig. 12. Top. Olive and fig trees on the hills of Kabylia, foothills of the Atlas Mountains, Algeria. Population twenty-five times as dense as on the same hills where there are no tree crops.—Fig. 13. Center. The pasture year on the two-story Majorca farm. Producing figs, wheat, beans, and clover.—Fig. 14. Bottom. Olive trees in Central Tunis planted (without doubt) by the Romans before A.D. 648 and still bearing—a long-lived property.