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bonate of magnesia would remain in solution, as in the Carlsbad waters. 

 The mixture of these alkaline springs with sea-water would yield 

 similar results. 



From my analyses of more than sixty of the different mineral 

 springs of Canada, to be found in the published reports of the 

 Geological Survey, I select a few characteristic waters of each class, 

 giving here only approximatively the determinations of the principal 

 ingredients for 1000 parts. 



A. Saline waters, containing little or no earthy carbonate. 



B. Alkaline waters, feebly saline. 



C. Saline waters, holding abundance of earthy carbonates. 



a. Neutral, containing earthy chlorides. 



b. Alkaline, containing carbonate of soda. 



Few of the above waters contain sulphates, but baryta and strontia 

 are present in very many of them ; the amount of these two bases 

 in the Varennes spring is equal to '016, while in that of Lanoroie, a 

 water of the class B, containing 12'88 of solid matters, there were 

 found '030 of baryta and '021 of strontia. Small quantities of 

 silica, alumina, phosphoric acid, manganese and iron are present in 

 all of these springs, and in the alkaline and many of the saline waters 

 a portion of boracic acid ; the borate is included with the carbonate 



