Propagation by means of a slip or scion cut from the parent tree
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“Propagation by means of a slip or scion cut from the parent tree and so placed that it will develop adventitious roots we may for convenience speak of as slipping. The cut end of the slip is set in the ground in some cool, moist, shady spot where evaporation is slow and the temperature mild. For delicate slips the shelter of a bell-glass is often necessary in order to insure the requisite moisture in the atmosphere and thus prevent the slip from drying up before it has sent down roots to make good its losses. For greater surety, if the slip has many leaves, most of the lower ones are removed in order to reduce the evaporating surface as much as possible without compromising the plant’s vitality, which resides especially in the upper part. But in many cases these precautions are needless; thus, to propagate the grape-vine, willow, and poplar, it suffices merely to thrust the detached scion into the ground.