CHE REFERENCE LIBRARY - ZetaTalk

111 the sw,mii of greatest growth it usually occurs as a softmucilaginous and more or less un&ganized substance, and inthis st,age it most readily repairs and unites wounded surfaces ;and for this reason the grafting and budding of old trees areusually performed in the spring. Later in t,lie season, thecambium Iwumw firmer and more dift’erentiated, and unionof wc,otly parts is more uncertain.It, is necessaq- to cover the wounds to check evaporationfr(!m the tissues. In outdoor work, wax is commonly usedfor all kinds of grafting that wound the wood itself, but inbudding, the loosened bark, bound down securely by a bandage,afiords sufficient protection. It is commonly supposed thatan ordinary cleft-graft cannot live if the bark of the stockimmediately adjoining it, is seriously wounded, but the barkreally- serves little purpose beyond protection of the tissuesbeneath. ,I cion will grow when the bark is mostl?’ removedfrom the stub, if adequate protection is given which will notinterfere with the formation of new bark.The cion must always bear at least one good bud. In mostcases, only buds that are mature or nearly so are used, but. inthe grafting of herbs very J*oung buds may be employed.These simple requirements may be met in an almost innumerablevariety of ways. The cion or Id may be inserted in theroot, crown, trunk or any of the branches ; it may be set simplyunder the :iiirk, or inserted into the w00d itself in almost anyfashion ; aid the operation may 1~ pt~form~l either on growingor c!r:!mant plants at any St’ZiOI1. But in practice thereare comparatiAy few methods sufi&ntly simple and expeditiousto admit of genrral use ; the operator must be ableto clio~~ the particular method best adapted to the (base inhand S