



: 





'I 







' 





/ 



84 Vegetable Static ks. 



Mercury being 1 3 + t times Specifically 

 heavier than water, it may eafily be eftim 2 . 

 ted to what height the feveral branches i n 

 thefe experiments would raifc water 5 for if 

 any branch can raife mercury 1 2 inches, it 

 will raife water 13 feet + 8 inches: A 

 further allowance being alio made for the 

 perpendicular height of the water in the 

 tubes, between r and z the top of the co- 

 lum of mercury, for that column of water is 

 above lifted up by the mercury, be it more 

 or lefs. 



* 



At the fame time, I tryed a Golden Re- 

 natc branch 6 feet long, the mercury rofe 

 but 4 inches, it fifing higher Or lower in 

 branches nearly of the fame fize and of the 

 fame kind of tfte, according as the air ff- 

 fued thro' the 11cm, more or lei's freely. 

 In the preceding experiment on the Non- 

 pareil branch, I had fucked a little with my 

 mouth at the fmall end of the tube, to get 

 fome air bubbles out of it; before I im- 

 merfed it in the mercury ; ( but thefe ait 

 bubbles are bed got out by a frriall wire 

 run to and fro in the tube) and this luc- 

 tionmadc air bubbles aril'eoutof thctrani- 

 vcrfe cut of the branch ; but tho' the qua«- 



i tity 





