g§2 ANALYSIS OF BRITISH AND FOREIGN SALT. 



little of its transparency when raised to a boiling heat, in 

 consequence of the deposition of a very minute quantity of 

 carbonate ©f lime, and oxide of iron. It was immediately 

 precipitated by muriate of barytes, oxalate of ammonia, and 

 alkaline solutions, both mild and caustic. Eight ounce mea- 

 sures, evaporated to dryness in a sand heat, gave 1230 grains 

 of salt, which, for the sake of distinction, I term entire salt. 

 It proved, on analysis, to contain in one thousand parts*, 



Composition Carbonate of lime and oxide of iron 2 



Of Wk fcilt* _ _ 



Muriate of lime, and muriate of magnesia, in nearly 



equal proportions • 5 



Sulphate of lime... ••••••■ jg 



Muriate of soda 974 



1000 



JkMfcer 2. The mother liquor, or brine that remains after sepa- 



*'* 8af * rating all the common salt, which it is thought worth while 



to extract, had the specific gravity of 1 208. The dry salt 

 contained 



Muriate of magnesia .... 35 



lime ••• 32 



Sulphate of lime. •«.. •• 6 

 Muriate of soda • • 927 



1000 



tbTbSS ° f 3 * Tlie clearings of the brine, whicIVare raked out of the 

 pan when the salt first begins to granulate, contained in, 

 1 000 parts, 



Muriate of soda 800* 



Carbonate of lime 4i 



Sulphate of lime. ....... 159 



3000 



Fan scale. 4. Of the substance called by the workmen pan-scale two 



specimens were analysed, the one containing a large propor- 



• The specific gravity and proportion of earthy sulphates in Cheshire 

 brine appears to differ considerably in the brine of different springs. 

 See Holland's Cheshire Report, p. 45, &c. 



tiop 



