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88 



Vegetable Staltch] 





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Clouds, the day and night before, 24 hours 

 continual rain : I cut off a branch of a Q [. 

 den c Pippin-tree } b b ( Fig. 13.) about 3 f cct 

 long, with feveral large lateral branches j its 

 diameter at the great end p near an inch 

 which end I cemented well, and tyed over 

 it a piece of wet bladder. 



Then I cut off at /' the main top twi 

 where it was \ inch diameter : I cemented 

 the glafs tube z,. r, to the remaining branch 

 ; r, and then filling the tube with water, 

 let its lower end in the mercury x: So 

 that now the branch was placed with its 

 top / downwards in the water, in the Aqueo- 

 mercurial sza^c. . 



It imbibed the water with filch ftrcngth, 

 as to raile the mercury with an almoft e- 

 quable progreiTion n -|- i inches by 3 a 

 clock, (the fun mining then very warm) 

 at which time the water in the tube ri 

 being all imbibed j fo that the end i of the 

 branch was out of the water, then the air 

 bubbles palling more freely down to /', an4 

 no water being imbibed, the mercury fub- 

 fidcd 2 or 3 inches in an hour. 



At a quarter part 4 a clock, I refilled the 

 gage with water, upon which the mercury 



rofc 



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