



I 



■ 



1 v 



I 



L 



I 



p'egetable Statich. 



20 



hours day, was 1 1 ounces , its middle quan- 

 tity 9 ounces, or 151 cubick inches. 



The 1 5 £ cubick inches perfpircd, divid- 

 ed by the furface 1589 fquare inches, gives 

 the depth perfpired off the furface in 1 2 hours 



day, viz. rh of an inch. 



The area of a tranfverfecut of itsftem^of 

 an inch fquare, whence the lap's velocity 

 here, will be to its velocity on the furface 

 of the leaves as 1589 X 4= <*3 5 6 : *• 



Experiment V. 



n 



From July 2$. to Aug. 25. I weighed for 

 10 feveral mornings and evenings a very 

 thriving Limon-tree, which grew in a gar- 

 den pot, and was covered as above: Its great- 

 eft perfpiration in 12 hours day was 8 ounces, 

 its middle perfpiration 6 ounces, equal to 

 104 cubick inches. In the night it perfpired 

 fometimes half an ounce , fometimes no- 

 thing, and fometimes increafed 1 or 2 oun- 

 ces in weight, by large dew or rain. 



The furface of its leaves was 2557 

 fquare inches, or 17 fquare feet + 59 

 fquare inches ; dividing then the ioj cubick 

 inches perfpired by this furface, gives the 



4 depth 



