Vegetable Staticks. 151 



The air ftill continued to flow at x, but 

 in an hour's time it very much abated, and 

 in two hours ceafed quite; there being now 

 no paflage for frefh air to enter, and fupply 

 what was drawn out of the ftick. 



I then, with a glafs crane drew off the 

 water out of the cylinder y y> yet the air did 

 not iffue thro 1 the wood at x. 



I therefore took the receiver with the 

 ftick in it, and held it near the fire, till the 

 bark was well dryed ; after which I fet it 

 upon the air pump, and exhaufted the air, 

 upon which the air iffued as freely at x as 

 it did before the bark had been wetted, and 

 continued fo to do, tho* I kept the receiver 

 exhaufted for many hours. 



I fixed in the fame manner, as the pre- 

 ceding Birch ftick, three joynts of a Vine 

 branchy which was two years old, the upper- 

 moft knot r being within the receiver 5 when 

 I pumped the air paffed moft freely into the 

 water x x* 



I cemented faft the upper end of the ftick n 

 and then pumped, the air ftill iffued out at at, 

 tho' I pumped very long, but there did not 

 now pafs the 4 20th part of the air which 

 paffed when the end n was not cemented. 



L 4 I then 



