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Vegetable Stalkks. 



But to return to the fubjed of the mo- 

 tion of the fap ; when the fap has firft parted 

 thro' that thick and fine (trainer, the bark of 

 the root, we then find it in greatcft quanti- 

 ties, in the mod lax part, between the bark 

 and wood, and that the fame thro' the whole 

 tree. And if in the early fpring, the Oak 

 and fevcral other trees were to be examined 

 near the top and bottom, when the fap firft 

 begins to move, fo as to make the bark ea- 

 sily run, or peel off, I believe it would be 

 found, that the lower bark is firft moiftened ; 

 whereas the bark of the top branches ought 

 firft to be moiftened, if the fap defcends by 

 the bark : As to the Vine, I am pretty well 

 allured that the lower bark is firft moiftened. 



We fee in many of the foregoing Expe- 

 riments, what quantities of moifture trees 

 do daily imbibe and perfpirc : Now the ce- 

 lerity of the fap muft be very great, if that 

 quantity of moifture muft, moft of it, a£ 

 cend to the top of the tree, then defcend, 

 and afcend again, before it is carried off by 

 perlpiration. 



The defect of a circulation in vegetables 

 feems in fome meafure to be fupplied by 

 the much greater quantity of liquor, which 





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