Dioscorea batatas.

Stem twelve feet or more in length, of a creeping or climbing habit; leaves heart-shaped, though sometimes halberd-formed; flowers small, in clusters, white. "The root is of a pale russet color, oblong, regularly rounded, club-shaped, exceedingly tender, easily broken, and differs from nearly all vertical roots in being largest at the lower end."

Propagation and Cultivation.--The Chinese Potato requires a very deep, light, rather sandy, and tolerably rich soil; and this should be thoroughly stirred to the depth of at least two feet. No fresh manure should be used, but fine, well-decomposed compost applied, and deeply as well as very thoroughly incorporated with the soil; avoiding however, if possible, its direct contact with the growing roots. It is propagated either by small roots; by the top or neck of the large roots, cut off to the length of five or six inches; or by the small bulbs, or tubers, which the plants produce in considerable numbers on the stem, in the axils of the leaves. These should be planted the last of April, or as soon as the ground is in good working condition. Lay out the land in raised ridges two feet and a half or three feet asunder; and on the summit set the bulbs, or tubers, with the point or shoot upwards, eight or ten inches apart; and cover about an inch deep. Cultivate in the usual manner during the summer; and late in autumn, after the tops are dead, and just before the closing-up of the ground, take up the roots, dry them

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