236 APPLICATION OF PRINCIPLES. 



SO small as to compel tliem to touch each other firmly, 

 they also will grow together ; and herbaceous graft- 

 ing is merely an application to practice of this power 

 of soft and cellular parts to unite. In order to secure 

 success, the scion and stock, being pared so as to fit 

 together accurately, are firmly bound to each other, 

 without being crushed ; parts in full vegetation, and 

 abounding in sap, are always chosen for the opera- 

 tion, such as the upper parts of annual shoots, near 

 the terminal bud ; perspiration is diminished by the 

 removal of some of the leaves of both stock and scion, 

 and by shading (71) ; and by degrees, as the union 

 becomes secured, buds and leaves are removed from 

 the stock, in order that all the sap possible may be 

 impelled into the scion. This method, if well managed, 

 succeeds completely in about thirty days, and is use- 

 ful as a method of multiplying lactescent, resinous, 

 and hard-wooded trees, which refuse to obey more 

 common methods. Baron de Tschudy succeeded in 

 this way in working the Melon on the Bryony (both 

 Cucurbitaceous plants), the Artichoke on the Car- 

 doon (both Cynaras), Tomatoes on Potatoes (both 

 Solanums), and so on. The following account of 

 managing ConiferiB, where herbaceous grafting is 

 used, is taken from the Gardener's Magazine, vol. ii. 

 p. 64, and sufficiently explains the practice : — 



" The proper time for grafting pines is when the 

 young shoots have made about three quarters of their 

 length, and are still so herbaceous as to break like a 

 shoot of asparagus. The shoot of the stock is then 

 broken off about two inches under its terminating 



