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II. SALT^, by their tafte and folubility in water arc known from 

 all other mineral fubllances, and are diftingtiifhed amon^ 

 thcmfelves by the kind of tafte and the degree of their foiU- 

 billty. 



III. INFLAMMABLES, are charaaerized by their folubility in 

 oil, by their fmoke or flame when burnt, which is either 

 grateful or difagreeable, innocent or deleterious, and by their 

 colour or teint. 



IV. METALS, are known by their luftre, great weight, proper 

 flux, and folubility in acids. 



V. PETRIFACTIONS, are not foffils of themfelves, but in rela- 

 tion to the materials which compofe them : they d'lfer from 

 the preceding clalfes only in their form, which they receive 

 from the bodies of one of the other kingdoms of nature. 



H z 



