21-2 



THE EAKL OF BERKELEY ON SOME 



POTASSIUM Nitrate 



The solubilities were determined in platinum crucibles, those at the boiling-point in 



Jena glass bulbs. 



RUBIDIUM Nitrate. 



The solubilities were determined by evaporating to dryness in platinum crucibles, 

 except in the case of the observations at the boiling-point ; these were done in Jena 

 glass bulbs, and the distillate always showed a trace of nitrate as having come over. 



* These solubilities are calculated from those of ANDRIA at slightly different temperatures, ' J. Prakt. 

 Chem.,' 137, 474. 



