PROPAGATION BY ISUDUIXG A XI) GEAPTING. 91 



waxed and then the whole is covered with burlap or old 

 cloth. After a few years such a bridged stem gives an 

 odd appearance, as is shown by Fig. 52, as given in the 

 Rural Xeiv Yorker by Mr. Leroy Whitford. . 



94. Bark-grafting.— This grafting is done after the bark 

 begins to peel in early spring when the leaves begin to 

 start. The stock is cut back as in cleft- 

 grafting, but no cleft is made. The 



bark is slit downward in two or three 



places as shown in Pig. 53. The scion 



is cut at lower end into a thin wedge 



with a notch on top that rests on the 



top of the stub when the wedge is shoved 



down to place. 



The scions do not need tying in our 



climate, if, after waxing, the surface is 



covered by winding with a c(?tton strip. 



If tied under the wax the string is liable 



to do injury as the size of the stock and Fig. 53.— Scions in- 



scion increases. As growth is secured sorted under the 

 1 • • ■ bark. 



the same season this is a certain method 



of working small and large stocks of several species. 



Where limbs have been broken on fruit and ornamental 



trees the writer has inserted bark grafts that soon repaired 



the injury. 



95. Soft-tissue Grafting,— Wedge- and cleft-grafting are 

 used in many instructive ways with tubers that have lost 

 their crown-buds, and in grafting one species of cactus on 

 another, and in grafting very many greenhouse- and 

 house-plants. It is often curious, if not jirofitable, to see 

 two varieties of herbaceous plants upon the same roots. 

 It is easy to graft the finest flowering species of cactus on 

 common stocks, as shown in Pig. 54, where the parts arc 

 held together with a jiin, but we have found it best to 



