114 Vegetable Statich. 



The fap begins to rife fooner in the morn- 

 ing in cool weather, than aicer hot days ; 

 the reafon of which may be, becaufe in 

 hot weather much being evaporated, it is not 

 fo foon fupplied by the roots as in cool wea- 

 ther, when lefs is evaporated. 



In a prime bleeding feafon I fix'd a tube 

 25 feet long to a thriving branch two years 

 old, and two feet from the ground, where 

 it was cut off; the fap flowed fo briskly, 

 as in two hours to flow over the top of the 

 tube, which was feven feet above the top of 

 the Vine ; and doubtlefs would have rifen 

 higher, if I had been prepared to lengthen 

 the tube. 



When at the diftance of four or five days, 

 tubes were affixed to two different branches, 

 which came from the fame item, the fap 

 would rife higheft in that which was laft 

 fixed ; yet if in the fixing the fecond tube 

 there was much fap loft, the fap would fub- 

 fide in the firft tube; but they would not 

 afterwards have their fap in equilibrio ; /. <?. 

 the furface of the fap in each was at very 

 unequal heights ; the reafon of which is, be- 

 caufe of the difficulty with which the fap 

 paffes thro' the almoft faturate and contradled 

 capillaries of the firft-cut ftem. 



In 



