PROPAGATION BY BUDDING AND GRAFTING 163 



to afterward to prevent the entrance of injurious insects and fungous 

 diseases, the tree may apparently be as strong and productive as its un- 

 injured neighbor. Some trees, however, will never seem to recover whoUy 

 from the injury, and unless bridge-grafting is very care- 

 fully done, a high percentage of the trees so treated 

 cannot be expected to live. The essential point to keep ** 



in mind is that the cambium layers of the cions must 

 be held in contact with the cambium layers of the stock, 

 both above and below the girdled part, until union 

 takes place." 



? 



FIG. 192. 



Inlaying. There are various kinds of graft- 

 ing in which a piece of wood is removed from 

 the stock and a cion is cut to fill the cavity. 

 The following methods described by Lodeman 

 for the grafting of grapes will serve as a type 

 of the class : " The stock is cut off, as for cleft- 

 grafting. In place of splitting the stub, one or ?^ thod of 

 two V-shaped grooves are made in it (Fig. 192). 

 These grooves are made by means of an instrument especially 

 designed for the purpose. It is shown in Fig. 193. The tip 

 cuts out the triangular part. In the blade itself is a part which 

 is bent at the same angles as the parts forming the tip. This 

 indented portion of the blade is used for cutting away the end 

 of the cion, and with very little practice an almost perfect fit 

 of the two parts can be made. The one or two cions are then 

 placed upon the stock and are firmly tied there. The tying 

 material should be of such a nature that it will decay before 

 there is any danger of strangling the cions. Raffia does very 

 well, as does also bast. No. 18 knitting cotton, soaked in 



boiling grafting wax, may be used 

 with entire satisfaction. The liga- 

 tures should be made as tight as 

 possible. Although this method of 

 grafting is not so commonly used as others, it still possesses 

 some decided advantages for grape vines. It is a much simpler 



FIG. 193. Inlaying tool (x 



