232 



AN ANALYSIS 



water, are muriate of soda, muriate of magnesia, muriate of 

 lime, and sulphate of soda. The quantity of muriate of soda 

 is less than what is obtained by evaporation, for a portion of it 

 is formed by the decompositions which occur ; the quantity of 

 muriate of magnesia is larger, as a portion of it is decompo- 

 sed ; the quantity of muriate of lime is inferred from the quan- 

 tity of sulphate of lime ; and the quantity of sulphate of soda 

 is determined from the quantities of sulphate of magnesia and 

 sulphate of lime obtained. The proportions may thus be easily 

 assigned. Referring to the preceding analyses, the propor- 

 tions in a pint, according to this principle, will be the follow- 

 ing : 



According to the first analysis,. 



Muriate of Soda, 



Magnesia, 



Lime, 



Sulphate of Soda, 



According to the second analysis 



Muriate of Soda, 



Magnesia, 



Lime, 



170.2 grains. 

 30.6 

 5.8 

 21.9 



Sulphate of Soda, 



228.5 grains. 



165.2 



31.6 



5.9 



24.9 



227.6 



If the opposite view be adopted, that the sulphate existing 

 in sea-water is not sulphate of soda, but sulphate of magnesia ; 

 then the ingredients and their proportions will be as follow : 



According 



