Fropagation by Grafting. 217 



cambium of the thicker edge of the cioii forms a line 

 with the cambium of the stock (Pigs. 113, 114, 115). 

 Success is promoted if the wedge-shaped portion of the 

 cion contains a 

 the stock exceeds 

 are usually in 

 chances of sue 

 should exert suf 



bud on its thicker edge. When 

 an inch in thickness, two cions 

 serted (Pig. Ill), to increase the 

 cess. The elasticity of the stock 

 ficient pressure to maintain very 

 close contact between it and the 

 cion; otherwise it should be 

 tightly bound Mith cord or raffia 

 (393). The cions 

 should contain at least 

 one bud beyond the 

 end of the stock. The 



Fig. 112. Grafting 

 chisel for making tiie 

 cleft in cleft>grafting. 

 Tile point at tlie right 

 is for holding the cleft 

 open duringinsertion 

 of cions. The projec- 

 tion above is for driv- 

 ing this point in or 

 out; one-flfth natural 

 size. 



Fig. 113. Fig. 114. Fig. 115. 



Fig. 113. Cion shaped ready for Insertion in 

 cleft (After Bailey). 



Fig. 114. Cions inserted in cleft, ready for waxing. 



Fig. 115. Cross-section of Fig. 113 (After May- 

 nard). C, cambium layer of stock; C, cambium 

 layer of cion. The cambium layers of the outer 

 edge of the cion should form a continuous line 

 with that of the stock. The cion is made a little 

 thinner at its inner edge to permit the pressure of 

 the stock to be exerted at the outer edge. 



wedge-shaped cut is usually made about one inch long, 



and the cion should be inserted into the cleft as far as 



the length of the wedge, after which all the exposed 



wounded surfaces, including the distal end of the cion, 



should be coated with grafting- wax (387). 

 13 



