EFFECTS OF THE GRAFTING AXD BUDDING OF TREES. 34} 



tised this art for thirty years ; that he, after years of re- 

 peated trial, was perfectly convinced of this truth. 



The next thing to be observed in a graft or bud is the row New w«o4. 

 of new wood round the division between the bark and 

 wood. In the common beech for stock, the scion being the 

 copper beecli, the new wood is always of a pink colour, 

 by which means it displays the mixture formed with the 

 wood of the stock, which is perfectly white. See (PI. IX, 

 Fig 1,) a graft of one year, the scion not only increased 

 at, p. p, the usual way, but continued rounds are added 

 till they meet; and the whole of the stock is eradicated. 

 There is a very peculiar appearance in the wood of the 

 scion and graft, which well proves that they can in some 

 measure alter the direction of their vessels, even after the 

 regular formation of the wood ; it is the undulating fonn, 

 sometimes absolute twisting and turning of the vessels, 

 which Duhamel notices, and which, he adds, strongly re. 

 sembles that in glands in animal bodies after a great incision. 

 And thence he infers, that a new sort of viscus takes place, 

 where the two branches join ; which most probably must 

 greatly meliorate the fruit of the scion. Unless Duhamel 

 had tasted human flesh before and after amputation ; I know 

 not how he could draw such au inference on the melioration 

 of flavour. If he found it corrected the taste of the 

 former, he might indeed draw the same inference in favour 

 of the fruit. Or I should suppose it was much more natural 

 to infer, that this undulation was caused by nature being 

 disturbed in her office, and by the struggle the circle of life 

 makes, to pass to the new branch, which soon however 

 subsides, a few inches higher : and as to the new viscus, 

 when placed in the solar microscope, it proved exactly the 

 same wood as the scion. 



There has long existed a dispute with respect to the Formation of 



manner in which the bark and wood are formed, which, it t,u> hark and 



w oou . 

 appears to me, dissecting grafts is the true way of elucidat- 

 ing and deciding. It is most plain, that the bark and wood 

 have not the smallest connection, but that which the 

 attaching of the flower bud to the wood occasions. I have 

 been long of this opinion, and my present occupation has 

 confirmed the idea. I think indeed, I have a specimen, 



that 



