hij ITaUr and other Uquiih. (?7^ 



Remarks on the Author it ij of the preceding 

 Facts. 



In orddr to give the chain of facts as distinct 

 as possible, I have not hitherto mentioned by 

 whom or in \vhat manner they were ascer- 

 tained. 



The fact mentioned in the first article has 

 been long known; a doubt, however, remained 

 rsspecting the quantity of air still left in water 

 after ebullition and the operation of the air- 

 pump. The subsequent articles will, I ap- 

 prehend, have placed this in a clearer point of 

 view. 



In determining the quantity of gases ab- 

 sorbed, I had the result of Mr. AVilliam 

 Henry's experience on the subject before me, 

 an account of which has been published in the 

 Philosophical Transactions for 1803. By the 

 reciprocal communications since, we have 

 been enabled to bring the results of our Ex- 

 periments to a near agreement ; as the quan- 

 tities he has given in his appendix to that 

 paper nearly accord with those I have stated 

 in the second article. In my Experiments with 

 the less absorbable gases, or those of the 2d, 

 3d, and 4th' classes, I used a phial holding 

 2700 grains of water, having a very accurately 



