PniNCirLES OF VEGETATION, ETC. 



123 



side, and terminating in tlic ccntve of the stock, so as to resemble that in tho 

 engi-aving. Take the intended graft, of the same 



diameter as the stock, 



and shape its lower extre- 

 mity so as to fit into the 



cleft thus made, bind uj? 



in the usual manner, and 



cover the joint with graffc- 



ing-paste. This forms a 



very strong and very use- 

 ful graft in species which 



unite slowly. 



269. Ilerlaceous-grafi- 



ing, as initiated by Baron 



de Tschudy, consists in 



choosing branches still in 



active growth. Pines, 



walnut-trees, oaks, and 

 ■other trees which are multiplied with difficulty by other processes, are easily 

 produced by this one. The mode of operating differs slightly, according 

 to the species. In the case of pines and resinous trees, when the terminal 

 bud of the subject, a, has attained two-thirds of its growth, make an horizontal 

 cut at d ; then make a slit downwards to the point where it begins to lose its 

 herbaceous character in the ligneous consistence of the tree ; stripping the part 

 of its leaves, and leaving only a bud or two at the top to atti-act the sap. Tho 

 gi'affc, h, is now pi-epared, having a cluster of young buds at its summit, and 

 its lower extremity shaped to fit into the slit, where it is so jDlaced that 

 the upper j^art projects over the cut in the stock. It is now covered 

 with grafting-clay and bound, beginning at the top, below the bunch of 

 leaves left on the stock, so as to avoid disturbing the leaves, and working 

 downwards. This done, break off, an inch or so from their axils, the 

 branches c c of the stock below the graft. When operating on delicate species, 

 it may be desirable to envelop the graft in a covering of paper, to preserve it 

 from the over dry atmosphere or the heat of the sun, for ten or twelve days 

 after the operation. Five or sis weeks after grafting, thc'.union will be com- 

 plete, and the bandage may be removed, or at least relaxed ; and when the 

 suture is perfect, the leaves at d may be removed, otherwise they will originate 

 buds and branches from the old ti*ee. 



270. In other species proceed as follows : — Towards the end of Jlay, when 

 the terminal bud of the tree is in a state of active vegetation, make an inci- 

 sion, crossing the insertion of the i^etiole of the third, foui-th, or fifth leaf, as 

 at h, penetrating half the diameter of the stem ; the choice of the particular 

 leaf depends upon its state of vegetation as compared with the proposed scion. 

 If the axil of the leaf, a, is examined, it will be observed that it has three 

 eyes, or genimce, the centre one being most developed ; it is between the axis 



