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J/egelable Siatkh. 1 5 l 



The air ftill continued to flow at x, but 

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

 in two hours ecafed quite; there bein- now 

 no paflage for frefh air to enter, and fupply 

 what was drawn out of the nick. 



I then, with a glafs crane drew off the 

 water out of the cylinder//, yet the air did 

 not iffue thro' the wood at x. 



I therefore took the receiver with the 

 (tick in it, and held it near the fire, till the 

 bark was well dryed 5 after which I kt it 

 upon the air pump, and exhauftcd the air, 

 upon which the air ifliied as freely at x as 

 it did before the bark had been wetted, and 

 continued fo to do, tho' I kept the receiver 

 exhauftcd for many hours. 



I fixed in the fame manner, as the pre- 

 ceding Birch ftick, three joynts of a Vine 

 branch-, which was two years old, the uppers 

 moft knot r being within the receiver ; when 

 I pumped the air pafied moft freely into the 

 water x x. 



I cemented faft the upper end of the ftick n 

 and then pumped, the air ftillifiucdoutat*', 

 tho' I pumped very long, but there did not 

 now pafs the 20th part of the air which 

 paifed when the end n was not cemented. 



L 4 I then 



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