238 



APPLICATION OF PRINCIPLES. 



With regard to inarching, which was probably 

 the most ancient kind of grafting, because it is that 

 which must take place accidentally in thickets and 

 forests, it differs from grafting in this, that the scion 

 is not severed from its parent, but remains attached 

 to it until it has united to the stock to which it is tied 

 and fitted in various ways ; the scion and stock are 

 therefore mutually independent of each other, and 

 the former lives uponits own resources, until the union 

 is completed. 



In practice, a portion of the branch of a scion 

 is pared away, well down into the alburnum ; a cor- 

 responding wound is made in the branch of a stock ; 

 tongues are made in each wound so that they will fit 

 30 , into each other ; and the liber and al- 

 burnum of the two being very accu- 

 rately adjusted, the whole are firmly 

 bound up ; grafting clay is applied to 

 the wound, and the plants operated 

 upon are carefully shaded; in course 

 of time the wounds unite, and then 

 the scion is severed from its parent. 

 Gardeners consider this the most cer- 

 tain of all modes of grafting, but it is 

 troublesome, and only practised in dif- 

 ficult cases. The circumstances most 

 conducive to its success are, to stop the 

 branch of both stock and scion under 

 operation, so as to obtain an accumula- 

 tion of sap, and to arrest the flow of sap 

 S.ijtt> upwards; to moderate the motion of 



