

w 



[Vegetable Staticks. 



4i 



And this holds tunc in animals, for the 

 perfpiration in them is not always grcatcft 

 in the grcatcft force of the blood 5 but then 

 often lead of all, as in fevers. 



I have fixed many other branches in the 

 fame manner to long tubes, without im. 

 nicrfmg them in water ; which tubes, being 

 filled with water, I could fee prccilcly, by 

 the defcent of the water in the tube t, how 

 faft itperfpircd off 5 and how very little pcr- 

 fpired in a rainy day, or when there were 



* 



no leaves on the branches. 



Experiment XI. 



Aug. 17. At 11 a: m, I cemented to 

 the tube a b (Fig. 4.) 9 feet long, and -\ inch 

 diameter an Apple-branch d 5 feet long | 

 inch diameter; I poured water into the tube, 

 which it imbibed plentifully, at the rate of 

 3 feet length of the tube in an hour. At 

 1 a clock I cut off the branch at c, 1 3 inches 

 below the glafs tube. To the bottom of 

 the remaining ftcm I tycd a glafs ciflern z, 

 covered with ox-gut, to keep any of the 

 water which droped from the ftcm cb from 

 evaporating. At the fame time I fet the 



branch 



