Vegeiahle Statkh. i j 3 



u thro' the length of the leaves." Crew's 

 Anatomy of Plants, p. 127. 



Whence it is very probable, that the air 

 freely enters plants, not only with the prin- 

 cipal fund of nourifhment by the roots, 

 but alfo thro' the furface of their trunks and 

 leaves, efpecially at night, when they are 

 changed from a perfpiring to a ftrongly 

 imbibing ftate. 



I fixd in the fame manner to the top of 

 the air pump receiver, but without the cy- 

 lindrical glafsjy y , the young (hoots of the 

 Vine, Apple tree and Honyfuckle, both e~ 

 reded and inverted, but found little or no 

 air came either from branches or leaves, ex- 

 cept what air lay in the furrows, and the 

 innumerable little pores of the leaves, which 

 are plainly vifible with the microfcope. I 

 tryed 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 v/ay. 



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 9 



