40 



THE GARDENER. 



pomegranate, all seem to grow in harmony upon an 

 orange. Scions, it may be observed, will often exist 

 for a short time on stocks far removed from natural 

 alliance ; but such unions are never permanent, but 

 merely subsist for a time, as they would if the ends of 

 the scions were inserted into the moist substance of a 

 potatoe. 



Pears may be grafted, not only on other pears, 

 but also on the quince (which is very frequently done), 

 and on the medlar, white thorn, or mountain ash. 

 Peaches are budded either on the almond, or more 

 frequently on the plum, their own roots not being 

 suited to the cold soil of this country. In these cases, 

 although the leaves and fruit of the peach and the 

 plum, the pear and the mountain ash, have a very dif- 

 ferent appearance, yet botanists have determined that 

 the stock and the scion belong to the same natural 

 order. 



" Having mentioned that one species is often grafted 

 on another of a different genus, it becomes necessary 

 to state the reason why such is in many cases more 

 proper than on species of the same genus ; and this 

 leads to the consideration of the effects generally pro- 

 duced by the stock upon the graft. When the stock 

 is of slower growth than the graft, as in the case of 

 the white thorn and quince stocks and the pear, the 

 consequence is a partial obstruction of the flow of the 

 sap, which checks the over-luxuriance of the pear- 

 tree, and its natural disposition to produce only wood 

 for a number of years of its youth ; the juices, ren- 

 dered less abundant, become more inspissated, and 

 fruitfulness is induced at an earlier age. This con- 

 dition may be even carried too far ; for the common 

 quince increases so slowly in diameter compared with 

 the generality of pears, that its vessels become inad- 

 equate for a sufficient supply of nourishment. The 

 French, a^vare of this, employ the Portugal quince as 



