. Plant propagation; greenhouse and nursery practice. t one commoninstance: certain brittle willows whose twigs drop in moist placesand sometimes take root. Why is union of cion and stock anj^ more mysterious or unusualthan rooting of cuttings? Is it not simpler and more normal? Awounded surface heals over to protect the plant. When twowounded surfaces of consanguineous plants are closely applied,nothing is more natural than that the nascent cells should interlockand unite. But why bits of stem should throw out roots from 154 PLANT PROPAGATION their lower portion and leaves from their upp
. Plant propagation; greenhouse and nursery practice. t one commoninstance: certain brittle willows whose twigs drop in moist placesand sometimes take root. Why is union of cion and stock anj^ more mysterious or unusualthan rooting of cuttings? Is it not simpler and more normal? Awounded surface heals over to protect the plant. When twowounded surfaces of consanguineous plants are closely applied,nothing is more natural than that the nascent cells should interlockand unite. But why bits of stem should throw out roots from 154 PLANT PROPAGATION their lower portion and leaves from their upper portion when bothends may be to every human sense exactly alike, is a mystery. It does not follow from these propositions that graftage is a de-sirable method of multiplying plants, but simply that direct andpositive evidence is needed. Much has been said concerning themerits of graftage. Opponents have made sweeping statements ofthe perniciousness of the system. Discussion started in an Englishjournal from an editorial which opened as
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectplantpropagation
