1 60 Vegetable Staticks. 
lindrical glafs y y, the young (hoots of the 
Vine, Apple-tree, and Honyfuckle, both e- 
refted and inverted, but found little or no 
air came cither from branches or leaves, 
except what air lay in the furrows, and the 
innumerable little pores of the leaves, which 
are plainly vifible with the microfcope. I 
tried alfo the ftngle leaf of a Vine , both by 
immerfing the leaf in the water x, and let- 
ting the ftalk ftand out of the receiver, as 
alfo by placing the leaf out of the receiver, 
and the ftalk in the glafs of water x ; but 
little or no air came either way. 
I obferve in all thefe Experiments, that 
the air enters very {lowly at the bark of 
young fhoots and branches, but much more 
freely thro’ old bark : And in different kinds 
of trees it has very different degrees of more 
or lefs free entrance. 
I repeated the fame Experiment upon fe- 
vcral roots of trees : The air paffed moft 
freely from » t ox; and when the glafs vef- 
fel y y was full of water, and there was no 
water in x , the water paffed at the rate of 
3 ounces in 5 minutes ; when the upper 
end n was cemented up, and no water in y y, 
fome air, tho’ not in great plenty, would 
enter the bark at zf and pafs thro' the wa- 
ter at x. And 
