[ 2 3 i ] 



two hours, had fo much altered the 

 air that a wax-taper could fcarcely 

 burn in it a moment, but was ready 

 to go out. 



77. Six peaches of a fmall fize 

 were placed under an inverted quart 

 jar in the fun between nine and 

 eleven ; when, by examining the 

 air, I found it to extinguifh a can- 

 dle. One meafure of it with one 

 of nitrous air occupied 1.55. 



78. One lemon placed under a 

 jar, containing three-quarters of a 

 pint, infected the air fo much in a 

 few hours, that a candle burned 

 dim in it. 



79. One handful of filberts were 

 placed under a jar of two pints 

 during the night ; I found the air 

 in the jar fo much fouled as to. 

 extinguifh a candle, 



Q 4 80. Six 



