





















ioo Vegetable Staticks. 



And by the fame principle it is, that wc 

 fee in the preceding Experiments plants 

 imbibe moifture fo vigorouily up their fine 

 capillary velTels ; which moifture, as it is car- 

 ryed off in perfpiration, ( by the a&ion of 

 warmth,) thereby gives the fap veflels li- 

 berty to be almoft continually attracting 

 of frefh fupplies, which they could not do, 

 if they were full faturate with moifture: For 

 without perfpiration the fap muft neceflarily 

 ftagnate, notwithftanding the fap veffels are 

 fo curioully adapted by their exceeding fine- 

 nefs, to raife the fap to great heights, in 

 a reciprocal proportion to their very minute 

 diameters. 



CHAP. III. 



Experiments, Jhewing the force of the fap 

 in the Vine in the bleeding feafon. 



HAVING in the firft chapter fhewn 

 many inftanccs of the great quanti- 

 ties imbibed, and pcrfpired by trees, and in 

 the fecond chapter, feen the force with 

 which they do imbibe moifture j I propofe 

 next, to give an account of thofe Experi- 

 ments, which prove with what great fo' ce 



the 





