3^6 



PRO DUCTIO N 



Sect. XV. i. 4. 



utmofl perfedlon ; for it is not yet certainly known, whether the 

 grafted fcion gives or takes any property to or from the tree, wh 



pt that it acquires nouriftiment from 



Th 



one inft 



recorded by Bradley, where the fcion of 



ted jaffamine- gave variegation to the leaves beneath it of the 

 igated jafTamine, on which it was ingrafted, though the graft 



1 



tfelf periflied. See Sea.V 



Th 



feems to fhew, that a commu 



nication of juices exifts between the graft and the flock j and that 

 thus fome change in the colour of the leaves of the flock might be 

 occafioned by the inofculation of the vefTels of the new bud with 

 thofe of other buds in its vicinity. Thus if a fcion of a purple grape 

 was Ingrafted on a white one, the leaves of the latter might proba- 

 bly become fomewhat red in the autumn, like thofe of the purple- 

 vine ; but there are no iaflances recorded, where this communication 

 of juices from the graft to the flock, or from the flock to the graft. 



has varied the flavo 

 of them. 



the form of the flowers, or fruit of either 



For though the fame vegetable blood pafTes along both the upper 



d lower part of the caudex of the new fcion, which extends from 



fummit on the branch to -its bafe in the earth 



yet the molecules 



fecreted from this blood are feleded or formed by the different glands 



of the part of the caudex, which was brought with 



the ingrafted 



fcion, and of the part of it which remained on the flock, in the fam€ 



+ 



manner as different kinds of fecretions are produced from the fame 

 blood in animal bodies. 



Some have neverthelefs believed, that felons, ingrafted on more 

 vigorous trees of the fame genus, have acquired greater vigour In the 

 growth both of their leaf-buds and fruit-buds. Mr. Speechly afferts,. 

 that he has improved many kinds of vines by ingrafting thofe, which 

 bear fmall grapes, and which have generally weak wood, on flron^^er 

 ones, which he has often experienced ; and recommends the Syrian 

 vine to graft upon, and prefers thofe, which were raifed from (etd 



S 



for 





1 



r\ 



