ANALYSES OF AKTESIAN WATERS. 



539 



The water of the Jamestown well tastes strongly brackish, and is 

 representative of many of the wells of the James River Valley deriving 

 their supply from the Dakota sandstone; but some are less brackish and 

 even palatable, while some others are more saline. According to Prof. 

 Henry Montgomery, of the University of North Dakota, the water of the 

 artesian well at Devils Lake (page 529) contains approximately 0.25 per 

 cent of chloride of sodium (common salt), as compared with the whole 

 weight of the water, or seven times more than the Jamestown water; and 

 alxmt 0.37 per cent of sulphate of soda (Glauber's salt), or nearly three 

 and a half times more than is shown in the foregoing analysis. 



4. IFaler from the Miniwaste artesian well, Browns Valley, Minn, {page S9). 



Ingredients dissolved in the water. 



Silica 



Alumina 



Protoxide of iron 



Sulphate of lime , 



Sulphate of magnesia. 



Sulph.ate of soda 



Phosphate of lime 



Chloride of sodium 



Chloride of jjotussium 



Carbonic acid 



Nitrates , 



13.0 



0.4 



0.7 



51.8 



27.9 



1, 452. 6 



5.0 



912.7 



Traces. 



Traces. 



Traces. 



Total 2,464.1 



2.1 

 1.1 



59. 



0.2 



37.1 



Grains per 

 gallon. 



0. 7583 



.0233 



.0408 



3. 0215 



1. 6270 



84. 7302 



.2916 



53. 2378 



100. 143. 7305 



The test for organic matter, with permanganate of potash, showed 

 1.63 parts oxygen consumed per million. This water has a considei-able 

 reputation for its aperient and alterative medicinal properties. Its content 

 of Glauber's salt is about one-fourth more tlian in the water of Jamestown, 

 and it has two and a half times as much common salt. 



