[ 209 ] 



4 2. A little branch of C#for of 

 Lebanon was placed over-night in a 

 room under a cylindrical jar of a- 

 bout two ounce-meafures ; next 

 morning the air was much fouled 

 by it. One meafure of it with one 

 of nitrous air occupied 1.45. 



43. Three jars inverted were 

 placed upon dimes in the manner 

 as in Exp. 39 ; under one was 

 placed a potatoe-plant ; under the 

 fecond a plant of common night" 

 Jhade ; under the third a plant of 

 hyofcyamus. 



Next morning I found the air of 

 all three very much fouled, but that 

 of the hyofcyamus the moil of all. 

 In none of them would a candle 

 burn. One meafure of the air of 

 the potatoe-plant with one of nitrous 

 air occupied 1.59 ; one meafure of 

 that of the night-Jhade occupied with 

 P one 



