\$6 Vegetable Staticks. 



hours after, I found the water fucked up in 

 the tube many inches to z'; which fhews, 

 that a confiderable quantity of air was im- 

 bibed by the branch, out of the tube r i ez ; 

 and in like manner did the Apricot-branch 

 (Exper. 29.) daily imbibe air. 



Experiment XLVIII. 



I took a cylinder of Birch with the bark 

 on, 16 inches long and | diameter, and ce- 

 mented it faft at z (Fig. 32.) to the hole 

 in the top of the air-pump receiver f />, 

 fetting the lower end of it in the ciftern of 

 water x \ the upper end of it at n was well 

 clofed up with melted cement. 



I then drew the air out of the receiver, 

 upon which innumerable air-bubbles iflued 

 continually out of the flick into the wa- 

 ter x. I kept the receiver exhaufled all that 

 day, and the following night, and till the 

 next day at noon, the air all the while if- 

 fuing into the water x : I continued it thus 

 long in this ftate, that I might be well af- 

 fured, that the air muft pafs in through the 

 bark, to fupply that great and long flux of 

 air at x. I then cemented up five old eyes 

 in the flick, between z and n> where little 



fhoots had formerly been, but were now 



perifhed - x 



