1826.] affecting Chemico-Mineralogical Si/stems. 433 



Nitric acid. 

 Nitrates. 



Saltpetre ^ + 2 Az Az 



Cubicnitre Na + 2 Az Az 



Nitrate ofUme .- Ca + 2Az Az 



Nitrate of magnesia M + 2 Az Az 



Sulphuric acid. 



a. Liquid S Aq 



i. Sulphurous acid gas S 



Sulphates. 



Sulphate of soda NaS' + 20Aq 



Sulphate of baryta Ba S* 



Celestine Sr S" 



Gypsum. 



a. Anhydrous Ca S^ 



J. Hydrated CaS»+4Aq 



c. Glauberite Na S^ + CaS* 



Sulphate of magnesia . M S« + 12 Aq 



Polyhalite.i w...... K S^' + MS^' + 2'gS« + 4Aq 



Sulphate of zinc Zn S^ + 12 Aq 



Sulphate of iron 



fl. Green Fe S^* + 12 Aq 



J. Red. F>S* + CFe's^ + 72 Aq 



c. Fibrous. 



• • • ... 



d. Ochrcous Fe« S + 6 Aq 



Sulphate of cobalt,... Cos S« + 24 Aq 



Sulphate of lead Pb S« 



a. Cupriferous Cu Aq» + Pb S*" 



.... ..... 



b. Sulphato-carbonate Pb C» + Pb S* 



Pb'c* + 3Pb S«^ 



• OrPbS« + 3PbC'? viz. sulphatO'tri'Carbwttlt^^Ed. 



New Series, vojl. si. 2 r 



