Analyfis of the Ah. 275 



Whether Salts will have a good effedt in 

 all, or any of thefe cafes, experience will 

 beft inform us. There is certainly fufficienc 

 ground, from many of the foregoing Expe- 

 riments, to encourage us to make the trial, 

 and they may at leail: be hints for further im- 

 provements. 



We fee that Candles and burning Brim- 

 ftone do in a much greater degree deflroy 

 the elafticity of the air, than the breath of 

 Animals 5 becaufe their vapours are more 

 plentiful, and abound more wi^h acid ful- 

 phureous particles, and are alio lefs diluted 

 with watry vapours, than the breath of Ani- 

 mals is: In which alfo there are fulphureous 

 particles, tho' In lerTer degrees; for the ani- 

 mal fluids, as well as folids, are ftored with 

 them : And therefore the Candle and Matches 

 ceafing to burn, foon after they are confined 

 in a fmall quantity of air, feems not to be 

 owing to their having rendred that air effete, 

 by having confumed its vivifying fpir it \ but 

 mould rather be owing to the great quantity 

 of acid fuliginous vapours, with which that 

 air is charged, which deflroy a good deal of 

 its elafticity, and very much clog and retard 

 the elaftick motion of the remainder. 



T 2 And 



