100 



THE AET Or 



cambium, and when spring arrives it would be found to be 

 withered. So we cannot lay down an invariable rule for the 

 time proper for each species or variety ; the condition of 

 growth is the point on which success chiefly depends. Two 

 neighbouring subjects of a similar species may demand a 

 difference of three weeks in their autumn grafting. In this 

 matter use is the best guide. Among the subjects grafted in 

 autumn, the plum, and especially the wild cherry, are the 

 better of it in this respect, that, their development in the 

 following April being much earlier than if grafted in spring, 

 they will have less to fear from the vicissitudes of the weather 

 and the attacks of insects. The scions should be cut just 

 before being used, stripped of their leaves at once, and have 

 their ends placed in a vessel of water or in cool sand. In 

 autumn grafting, cold mastics have this drawback, that their 

 unctuousness suffers from the action of the frost, which 

 penetrates to the tissues of the grafts. A warm com- 

 position which hardens at once should therefore be employed. 

 However, a mastic which is too easily softened, or which does 

 not harden sufficiently, can always be covered so as to protect 

 it from the frost. 



TERMINAL CLEFT-GRAFTING. 



The modes of cleft -grafting which have been described are 

 only terminal in a certain sense. In those which follow, the 

 grafts are more especially applied to the top of a stock not 

 headed down, and are inserted with a terminal eye. 



Terminal Woody Grafting. 



The season for performing this operation is in spring, 

 before the flow of the sap. We have employed this method 

 with the walnut-tree and the fir. 



