Archive image from page 253 of A dictionary of modern gardening. A dictionary of modern gardening . dictionaryofmode01john Year: 1847 GR A 258 —♦— GR A that the bark of the scion is exactly ad-j Cactaceae; the parts of which, ow- justed to that of the stock, and the two are bound firmly together. ' Here the mere con- tact of the two enables the sap flowing upwards through the stock to sus- tain the life of the scion until the latter can de- velop its buds, which then send downwards their wood ; at the same time the cellular system of the parts in contact unites by granulations, and when the w
Archive image from page 253 of A dictionary of modern gardening. A dictionary of modern gardening . dictionaryofmode01john Year: 1847 GR A 258 —♦— GR A that the bark of the scion is exactly ad-j Cactaceae; the parts of which, ow- justed to that of the stock, and the two are bound firmly together. ' Here the mere con- tact of the two enables the sap flowing upwards through the stock to sus- tain the life of the scion until the latter can de- velop its buds, which then send downwards their wood ; at the same time the cellular system of the parts in contact unites by granulations, and when the wood descends it passes through the cel- lular deposit, and holds the whole together. ' The use of < tongue- ing' is merely to steady the scion and to prevent its slipping. The advantage of this mode of grafting is the quickness with which it may be performed ; the disadvantage is, that the surfaces applied to each other, are much smaller than can be secured by other means ing to their succulence, rea- dily form a union with each Fig. 64. other. ' A far better method than whip grafting, but more te- dious, is saddle grafting, in which the stock is pared ob- liquely on both sides till it becomes an inverted wedge, and the scion is slit up the centre, when its sides are pared down till they fit the sides of the stock. In this method the greatest possible quantity of surface is brought into contact, and the parts are mutually so adjusted, that the ascending sap is freely received from the stock by the scion, while at the same time, the descending sap can flow freely from the scion into the stock. Mr, Knight, in describing this mode of operating, has the following observa- tions : ' The graft first begins its efforts to unite itself to the stock just at the period when the formation of a new internal Fig. 63. It is, however, a great improvement iayer of bark commences in the spring, upon the old crown grafting, still em- an'd the fluid which generates this layer ployed in
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