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Show A Good Pruning Suggestion. To make large wounds heal quickly, first see that the trees are in vigorous vigor-ous growing condition. When a large cut must be made, paint the wood with white lead, then cover the most of It with a piece of zinc. The healing tissue, called the "callus," "cal-lus," will start from the edges of the wound. In the course of time this callus will fold over sufficiently to cover the wound. Its spread may be hastened by slitting this callus with the point of a sharp knife once each year. Early in the summer Is the best time to do this, as the callus tissue is most active at that time. |