230 



AMERICAN VINES. 



contact with the walls of the slit. The generative layers 



are made to coincide with those of the stock (Fig. 104), 



and are then bound. 



(c) Double Cleft-Graft. The stock is prepared as above, 



the slit is made along the diameter with a strong knife 

 or chisel, and is kept open by a wooden 

 wedge placed at the outer edge of the slit. 

 The scions are cut in a wedge shape, as 

 shown in Fig. 105. The lateral sections 

 starting from the same level and inter- 

 secting along the axis of the cane, and not 

 outside the pith, if not the contact of the 

 generative layers of scion and stock will 

 not take place throughout their length. 



On large stocks, two parallel or per- 

 pendicular slits may be made, in each of 

 which two scions are inserted. The strike 

 is thus better assured. Again, when the 

 stock is very large, the scions may be 

 placed as shown in Fig. 106. This is a 

 side cleft-graft, the stock not being split 

 along its diameter. 



(d) English Cleft-Graft. The English 

 cleft-graft is made on stock of one to two 

 years old, either equal or smaller in 

 i diameter than the scion they are to bear. 



Wedge-shaped Scion for In the cleft-graft above described one 



English Cleft-Graft. gide Q f 



stock; in the English cleft-graft the knitting takes place 

 on both sides and i s, 

 therefore, more perfect. 

 The stock is cut hori- 

 zontally, and, if neces- 

 sary, the cut is freshened 

 with a knife. It is 

 split along the axis to 

 a depth of 2 or 3 centi- 

 metres (24 to \y\ in.) 

 The scion, with one or 

 two eyes, is cut in the 

 shape of a rather long 

 wedge, the two lateral 



Sections being very Close Fig. 1 06. Double Cleft-Graft on old Stock. 



