378 



THE UNIVERSE. 



sor, since it is equal to the weight of a column of water 



eighty feet in height. 



Thus in an occult function, which is performed so mys- 

 teriously in the 

 vegetable k i n g- 

 dom, experiment 

 reveals a power- 

 ful energy, an 

 energy which sur- 

 passes the visible 

 and tumultuous 

 circulation in the 

 largest animals. 

 Many physiolo- 

 gists have stated, 

 not without some 

 foundation, that 

 the sap rises in 

 the vessels of the 

 vine with at least 

 five times as much 

 I force as the blood 

 circulates in the 

 crural artery of 

 the horse, the 



178. Force of Vegetable Circulation and Absorption. Hales' ex- HlOSt important 

 periment, modified, as shown at the Amphitheatre of Kouen. , -. i p 



blood-vessel ol 

 the thigh, and with seven times as much force as in the 

 same vessel in the do;. 



It is certain that the blood which the heart projects so 



