148 Vegetable Staticks. 



Another argument againft an uniform cir- 

 culation of the fap in trees, as in animals, 

 may be drawn from Exper. 37. where it 

 was found by the three mercurial gages 

 fix'd to the fame Vine, that while fome of 

 its branches changed their ftate of protrude- 

 ing fap into a ftate of imbibing, others con- 

 tinued protruding fap, one nine, and the 

 other thirteen days longer. 



In the fecond Vol. of Mr. Lowthorp'% 

 Abridgment of the Philof. TranfaEt. p. 708. 

 is recited an Experiment of Mr. Brother- 

 ton's -, viz. A young Hazel n (Fig. 27.) was 

 cut into the body at x z with a deep gafh ; 

 the parts of the body below at z y and 

 above at x> were cleft upwards and down- 

 wards, and the fplinters x z by wedges were 

 kept off from touching each other, or the 

 reft of the body. The following year, the 

 upper fplinter x was grown very much, but 

 the lower fplinter x did not grow 5 but the 

 reft of the body grew, as if there had been 

 no gafh made: I have not yet fucceeded in 

 making this Experiment, the wind having 

 broken at x z all the trees I prepared for 

 it : But if there was a Bud at x which fhot 

 out leaves, and none at z, then, by Experi- 

 ment 41, 'tis plain that thofe leaves might 



draw 



