...soda, also powdered, and spread the mixture upon the hearth of a reverberatory furnace such as 1 hare before described for the decomposition of the sulphate...it with hot water, and when the clear solution of aluminate of potash or soda thus obtained has become cold, I pass through it an excess of carbonic...

...and expose to steam in a close cylinder in the manner formerly described for the sulphate of lime. When a specimen* of the charge shows by the usual tests that it contains no notable proportion of sulphate undecomposed, the operation is completed. I then withdraw the charge, lixiviate it with hot...

...necessary, by suitable openings above the fuel, as will render the atmosphere in the furnace oxidizing. When a specimen of the charge shows by the usual tests...it contains no notable proportion of the sulphate uudecomposed, the operation is completed. The charge is withdrawn and lixiviated with hot water, and...

...of soda, also powdered, and spread the mixture upon the hearth of a re verberatory furnace such as 1 have before described for the decomposition of the...sulphate undecomposed, the operation is completed. 1 then withdraw the charge, lixiviate it with hot water, and when the clear solution of aluminate of...

...hearth of a reverberatory furnace, such as I have before described for the decomposition of thesulphate of baryta. The mixture is then heated, exposed to...for the treatment of the sulphate of baryta. When it is desired to collect the sulphuric and sulphurous acids produced by the decomposition of the sulphates...

...and expose to steam in a close cylinder in the manner formerly described for the sulphate of lime. When a specimen of the charge shows by the usual tests that it contains no notable proportion of sulphate undecomposed, the operation is completed. I then withdraw the charge, lixiviate it with hot...