I • 







104 ' Vegetable Statich. 



pulfion or trillion, it muft needs have rif cri 

 out of the ftcrn into the tube. 



Now fince this flow of fap ceafesat once 

 as foon as the Vine was cut off the ft cm 

 the principal caufe of its rife muft at the 

 fame time be taken away, v?z t the great 

 perfpiration of the leaves. 



For tho' it is plain by many Experiments, 

 that the fap enters the fap vciTels of plants 

 with much vigour, and is probably carried 

 up to great heights in thofe velTels, by the 

 vigorous undulations of the fun's warmth, 

 which may reciprocally caufe vibrations in 

 the veficlcs and fap veiTels, and thereby make 

 them dilate and contract a little ; yet it feems 

 as plain ( from many Experiments, as parti- 

 cularly Exper. 13, 14, 15. and Exper. 43. 

 ■where tho' we are allured that a great quan- 

 tity of water patted by the notch cut 2 or 3 

 feet above the end of the Item ; yet was the 

 notch very dry, becaufe the attraction of the 

 perfpiring leaves was much greater than the 



force of trufiqn from the column of water , 

 From thefe Experiments, I fay, it feems 

 evident, that the capillary fap veflcls, out of 

 'he bleeding feafon, have little power to pro- 

 trude 







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