8 8 Vegetable Siaiich\ 



clouds, the day and night before, 24 hours 

 continual rain : I cut off a branch of a GoU 

 den*? kohi-tree, b b (Fig. 13.) about 3 feet 

 tc 1 with fcveral large lateral branches j its 

 diameter at the gi id p near an inch, 



which end I cemented well, and tyed over 

 k a piece of wet bladder. 



Then I cut off at i the main top twig, 

 where it was f inch diameter : I cemented 

 the glafs tube z r, to the remaining branch 

 i r, and tlfen filling the tube with water, 

 let its lower end in the mtrcury x : So 

 that now the branch was placed wirti its 

 top i downwards in the water, in the Aqueo- 



mereurial caiie. 



It imbibed the water with faeh ftrength, 

 as to raife the mercury with an almofl e- 

 quable progreffion 11 -U \ inches by 3 a 

 clock, (the fun Chining then very warm) 

 at which time the water in the tube r i 

 being all imbibed } £0 that the end/ of the 

 branch was out of the water, then the air 

 bubbles palling more freely down to /, and 

 no water being imbibed, the mercury fub- 

 fided 2 or 3 inches m an hour. 



At a quarter pail 4 a clock, I refilled the 

 gage with water, upon which the mercury 



rofc 



