96 



MR. F. C. CALVERT ON THE SOLUBILITY OF 



order that no precipitate should be formed in any of the jars 

 of the series, when 3,34 of sulphate of potash was in solution, 

 and the following table gives the results obtained. 



TABLE No. 11. 



HAS THE FORMATION OF A PRECIPITATE AN INFLUENCE ON 

 THE SOLUBILITY OF SULPHATE OF BARYTA. 



It is generally believed that the formation of a precipitate 

 tends to increase its quantity, but if this opinion be correct 

 with regard to crystalline precipitates, such as those of bitar- 

 trate of potash, carbazotate of potash, &c, it is not so with 

 sulphate of baryta ; for it will be seen, in the following table, 

 that the quantity of sulphate of baryta which remains dis- 

 solved in 1000 grs. of nitric acid, sp.gr. 1.1G7, at 60° Fah., 

 is the same, whether there is or is not a precipitate formed 

 in the liquors. 



