[ 206 J 



of water, which was kept inverted 

 the whole night in a room ; next 

 morning a fmall quantity of air was 

 obtained, which proved to be of a 

 very poifonous quality ; it extin- 

 guifhed directly a flame. One mea- 

 fure of it with one of nitrous air 

 occupied 1.94; fo that an animal 

 ahfolutely could not have lived in 

 it during one fingle minute. 



S E G- 



