. Permanent Colours of Opake Bodies. 2di 



and difcharged from them, already combined, or 

 that it is formed in the atmofphere, by the con- 

 currence and union of thefe principles. And all 

 the phjcnomena, not only of fixed air, but alfo of 

 phlogifticatcd air, may be folved by the aftion, 

 and properties, of thefe ingredients. 



The weight of fixed air, indicates that it con- 

 tains a confiderable portion of aqueous matter; 

 and it is by means of this conftituent principle, 

 that it is mifcible with water, in like manner as 

 ardent fpirits are, notwithftanding their inflam- 

 mable nature. The phlogiflic part of fixed air 

 has been already confidered. 



Phlogiftic matters are mifcible with water, 

 only in proportion as they contain a quantity of 

 the aqueous principle in their compofition. 

 When the relative proportion of this conftituent 

 part, is lefs than that of the phlogifton combined 

 in fuch matters, they are either immifcible with 

 water, or only mifcible in part. 



Thus, fpirit of wine, which is oil combined 

 with water, unites with water, in all proportions, 



^ther, which confifts of fpirit of wine, from 

 which a confiderable portion of its v^ater has 

 been feparated by the vitriolic acid, is not mif-^ 

 cible with water in all proportions : but, ten 

 parts of water are requifite to the abforption of 

 ©ne part of asther. 



Oil, which contains ftill lefs water in its Com- 

 pofition, 



