Vegetable Staticks. 1 3 1 



which are moft expofed to the Sun, as the 

 bark is. 



And when wc confider, that the fap ve£ 

 fels are fo very fine, as to reduce the lap al- 

 moft to a vapour, before it can enter them, 

 the Sun's warmth on the bark fhould moft 

 eafily difpofe fuch rarified ftp to afcend? 

 inftead of defending. 



Experiment XLV. 



July 2 7 th, I took fever al branches of Cur- 

 ransy Vines^ Cherry, Apple, Tear and Tlum- 

 tree, and fet the great ends of each in veffeis 

 of water x y ( Fig. 31.) hut firft took the bark 

 for an inch off one of the branches, as ££&? 

 to try whether the leaves abbvc z at b 

 would continue green longer than the leaves 

 of any. of the ether branches a, r, d $ but I 

 could find no difference, the leaves wither- 

 ing all at the fame time : Now, if the re- 

 turn of the fap was flopped at z, then it 

 would be expe&ed, that the leaves at b fiiould 

 continue green, longer than thofc on the o- 

 ther branches, which did not happen, neither 

 Was there any moifture at z, 



K 2 Expe- 



