Sept. lo, 1917 



Formation of "Black Alkali" 



565 



Table XXV. — Solubility of lime in solutions of sodium nitrate 



Table XXVI. — Solubility of lime in solutions of sodium chlorid 



Table XXVII. — Solubility of lime in solutions of sodium, sulphate 



Table XXVIII. — Solubility of lime in solutions of mixtures of sodium chlorid and 



sodium sulphate 



