( 199 ) 



29. Three jars as above were^ an ~of 

 expofed to warm fun-mine bet ween l u e s 3£ 

 eleven and twelve ; in each were 

 put two handful s of leaves of an 

 Elm-tree. 



At three in the afternoon the air 

 of the firft jar was put to the teft ; 

 it gave 1.917; 1.93 ; 1. 81 ; 2.10; 

 3,10. 39® 



The fecond jar was examined at 

 five o' clock, the air gave 1.88; 

 1.67 ; 1.67 ; 2.65 ; 3.65. 335 



The third jar was examined at 

 fix; its air gave 1.97; 1.88; 1.84; 



2.57; 3-54- 346' 



N. B. On the day this experiment 

 was made it was a very warm fun- 

 lliine from eight in the morning 

 till two in the afternoon, when the 

 weather began to be more and more 

 dark ; we had at three a thunder 

 ilorrn ; and after the iky was always 

 O 4 cloudy, 



