84 P'^egetahle Statkks, 
Mercury being 1 3 f times fpecifically 
heavier than water, it may eafily be eftima- 
ted to what height the feveral branches in 
thefe experiments would raife water 5 for if 
any branch can raife mercury 12 inches, it 
will raife water 1 3 feet 8 inches : A 
further allowance being alfo 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- 
nate branch 6 feet long, the mercury rofe 
but 4 inches, it rifing higher or lower in 
branches nearly of the fame fize and of the 
fame kind of tree, according as the air if- 
filed thro' the ftem, more or Icfs 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 
fomc air bubbles out of .it, before I im- 
mcr fed it in the mercury ; ( but thefe air 
bubbles are bed got out by a fmall wire 
run to and fro in the tube ) and this fuc- 
tion made air bubbles arife out of the tranf- 
verfe cut of the branch ; but tho' thequan- 
I tity 
