relating^ to Air and Water, 295 



tnre of the experinienr, will perhaps be thought to be tolerably 

 i)£ar that of the air. 



If the air be analyzed, the 840 ounce meafures will be 

 found to contain - 168 of uncombined fixed air =: 151 grains. 



and 672 impure imflammable =1:179 



fo that the whole 840 will weigh - - 330 



Laflly, if the 672 ounce meafures of impure inflammable 

 air be decompolsd, it will be found to contain 



164 ounce meafures of fixed air= 147.6 gT3. 

 and 508 inflammable - - = 30.7 



fo that the whole 672 will weigh - - '^1^-2, 



which is very near toi79, the weight of the whole together. 



It may, however, be fafely concluded from this experiment, 

 and indeed from every other that I made with cliarcoal, rhar 

 there was no more pure inflammable air produced than the 

 charcoal itfelf may be very well fiippofed to have fupplied. 



There is, therefore, no reafon for deferting the old eflablilhed 

 hypothelis of phhgijlofi on account of thefe experiments, fmce- 

 the faft is by no means inconliftent with it. The pure inflam- 

 mable air with the water neceflarily contained in it would 

 weigh no more than about 30 grains, while the lofs of weight 

 in the charcoal was 94 grains. But to this muft be added the- 

 phlogiflon contained in 392 ounce meafures of fixed air, 

 which, according to Mr. Kirwan's proportion, will be nearly 

 65 grains, and this and the 30 grains will be 95 grains. 



The bafis to this fixed air, as well as to the inflammable, 

 muft have been furnlfhed by the wafer ; and from this it may 

 be concluded, that the water mufl have been fo far altered as 

 to be changed into fixed air, which will be thought not to be- 

 any great paradox, if it be confidered thc»t3. according to the 



latefl:.. 



