C H 3 



I H A VE alfo difcovered, ilnce my 

 book was printed, that, in reading 

 Dr. Prieftley's lafl work, I had over- 

 looked a remarkable pafTage, p. 

 270, in which he hints at what I 

 found to be the cafe with inflam- 

 mable air having flood a long while 

 with plants. I think it my duty 

 to relate his own words : 6t I am 

 " fatisfied, however, from my own 

 " obfervations, that air may be 

 " very offenfive to the noftrils, pro- 

 " bably hurtful to the lungs, and 

 " perhaps alfo in confequence of 

 " the prefence of phlogiftic matter 

 " in it, without the phlogifton be- 

 *' ing fo far incorporated with it t 

 ** as to be difcovered by the mix> 

 ^ ture of nitrous air." 



d-£ ER^ 



