[ *34 3 



inverted upon a dilli; the apples 

 became covered with a great number 

 of fmall air-bubbles. After they 

 had been thus expofed to the fun 

 from ten in the morning till four 

 in the afternoon, a moderate quan- 

 tity of air was obtained, which 

 proved to be very bad ; a flame 

 was directly extinguished in it. One 

 nieafure of it with one of nitrous 

 air occupied 1.69. 



87^ Two dozen of young and 

 fmall French beans were put in a 

 quart jar full of water, and expofed 

 in the fun from ten till two o' clock : 

 they were covered all over with a 

 great many fmall air-bubbles ; the 

 quantity of air collected was but 

 fmall, and in quality fomewhat 

 worfe than common air. One mea- 

 fure of it with one of nitrous air 

 occupied 1.14; whereas one mea- 

 fure 



