9 2 Vegetable Staticks. 



thefe experiments would raife water; for 

 if any branch can raife mercury 12 inches, 

 it will raife water 13 feet 8 inches: A fur- 

 ther allowance being alfo made for the per- 

 pendicular height of the water in the tubes, 

 between r and z the top of the column of 

 mercury ; for that column of water is lifted 

 up by the mercury, be it more or lefs. 



At the fame time, I tried a Golden Re- 

 nate branch 6 feet long ; the mercury rofe 

 but 4 inches, it riling higher or lower in 

 branches nearly of the fame fize and of the 

 fame kind of tree, according as the air hTued 

 thro* the ftem, more or lefs freely. In the 

 preceding experiment on the Nonpareil branch, 

 I had fucked a little with my mouth at the 

 fmall end of the tube, to get fome air-bub- 

 bles out of it, before I immerfed it in the 

 mercury ; (but thefe air-bubbles are beft got 

 out by a fmall wire run to and fro in the 

 tube) and this faction made air-bubbles arife 

 out of the tranfverfe cut of the branch : but 

 tho* the quantity of thofe air-bubbles thus 

 fucked out, was but fmall; yet in this and 

 many other experiments, I found, that after 

 luch faction, the water was imbibed by the 

 branch much more greedily, and in much 

 greater quantity, than the bulk of the air was, 



which 



