1 i 4 Vegetable Statkks. 



been more mercury in the gage; it being all 

 forced into the leg y z. From this time to 

 May 5th, the force gradually decreafed. 



The greateft height of the mercury being 

 3 2 -]- i- inches ; the force of the fap was 

 then equal to 36 feet 5 -f"* 7 inches height 

 of water. 



Here the force of the rifing fap in the 

 morning is plainly owing to the energy of 

 the root and item. In another like mercurial 

 gage, (fixed near the bottom of a Vine, which 

 run 20 feet high) the mercury was raifed by 

 the force of the fap 38 inches equal to 43 

 feet -j~ 3 inches + 4- height of water. 



Which force is near five times greater than 

 the force of the blood in the great crural ar- 

 tery of a Horfe ; feven times greater than 

 the force of the blood in the like artery of 

 a Dog; and eight times greater than the 

 blood's force in the fame artery of a fallow 

 Doe: Which different forces I found by 

 tying thofe feveral animals down alive upon 

 their backs ; and then laying open the great 

 left crural artery, where it firft enters die 

 thigh, I fixed to it (by means of two brafs 

 pipes, which run one into the other) a glafs 

 tube of above ten feet long, and £ of an 

 inch diameter in bore: In which tube the 



blood 



