XI. An Analysis of Sea- Water ; with Observations on the Ana- 

 lysis of Salt-Brines. By John Murray, M. D. F. E,. S. E. 



(Bead 15th April, and 20th May, 1816.J 



THE composition of Sea- Water has been variously sta- 

 ted by different chemists, not only with regard to the 

 proportions of the salts which it holds in solution, but with re- 

 gard even to the ingredients themselves. 



According to Lavoisier, it contains muriate of soda, muriate 

 of magnesia, and muriate of lime, sulphate of soda, sulphate 

 of magnesia, sulphate and carbonate of lime. The pro- 

 portions he assigns are, in a pound of water, (French weights) 

 126 grains of muriate of soda, 14f grains muriate of magnesia, 

 23 grains muriate of lime mixed with muriate of magnesia, 

 7 grains of sulphate of soda and sulphate of magnesia, and 8 

 grains of sulphate and carbonate of lime *. 



Bergman gives a very different statement, He found only 

 muriate of soda, muriate of magnesia, and sulphate of lime ; 

 the proportions in a Swedish kanne, which is equal to about 6~ 

 English pints, are 2 ounces 433 grains of muriate of soda, 380 



grains 



* Memoires de TAcademie des Sciences, 1772. 



