GEEFFE SYLVAIN, THE PEG, AND THE RENEWAL. 



373 



5. PeD-grafting^ De M. Thouin. A hole is bored 

 into the stock, of an inch or more in depth, accord- 

 ing to its size, and around the hole the outer bark 

 is removed, so as to leave the liber exposed. Then 

 a scion is selected of the size of the stock, and its 

 lower end sharpened like a peg, so as to fit the 

 hole. The scion must have a shoulder, and the 

 liber must meet that of the stock ; — upon the latter 

 particular depends the whole success of the operation. 



6. Greffe Sglvain. This consists in making a 

 cut like that represented in (a) 

 upon two trees near each other, 

 and bending them so that they 

 unite. They are then fastened 

 by a nail. This method is used 

 only for ornamental purposes. 



7. Renewal grafting. When a large tree is broken 

 off near the ground, a new head 

 is sometimes formed by a plan 

 described by M. Thouin. A small 

 tree is planted by the side of it, 

 and a slanting, triangular cut is 

 made in the side of the old trunk, 



as at («), while the young one is pared to match it, 

 as at (6). This is then inserted and bound on. 

 The scion thus derives strength from its own roots, 

 and a union will soon be formed with the old trunk 

 when the scion is separated from its own roots, and 

 becomes the head of the large tree. 

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