DOUBI.E-WORKING. 



133 



barks between the stock and cion and then tie the two 



together snugly. The details are shown in 



Fig- 139- In M, a branch c, is joined at o 



to the stock h. Other branches, like x, 



might be similarly treated. In N, the , 



method of cutting the conjoined sur- 

 faces is explained at r. If outdoors, 



the junction should be waxed over ; 



and it is then necessary, also, to 



secure the branches in such manner 



that the wind cannot loosen them. 



The parts are sometimes joined by a 



tongue, after the manner of a whip-graft, 



but this is rarely necessary. Oranges and 



camellias were often propagated by inarch- 

 ing in the old practice, but this work is 



now much more easily done by the ve- 

 neer-graft. 



Double-working.— Grafting upon 



a grafted tree is known as double- 

 grafting or double-work- 

 ing. It is employed for the purpose of growing 

 a variety upon an uncon- 

 genial root, or of secur- 

 ing a straight and vigorous 

 stock for a weak and poor 

 grower. The operation 

 may be either grafting or 

 budding. It is more com- 

 monly the latter. Some 

 sorts of pears do not unite 

 well with the quince, and if 

 it is desired to secure 

 dwarfs of these varieties, 

 some variety which unites 

 readily with the quince 

 must first be put upon it. 



Inarching. 



