538 



THE GLACIAL LAKE AGASSIZ. 



2. Brine from the artesian well at Rosenfeld, Manitoba {pages 7S-. 



Ingredients dissolved in the water. 



Silica 



Carbonate of irou 



Carbonate of lime 



Sulphate of lime 



Borate of soda 



Chloride of magnesium. 



Chloride of calcium 



Chloride of potassium . . 

 Chloride of sodium 



Total . 



12.6 



Traces. 



77.7 



4, 151. 1 



Traces. 



1, 722. 5 



398.2 



417.9 



36, 497. 1 



43, 277. 1 



0.2 

 9.6 



4.0 



0.9 



1.0 



84.3 



Grains per 

 gallon. 



4. .53 

 242. 05 



100. 44 



23.22 



24.37 



2, 128. 15 



, 523. 49 



Bromine and iodine are both present, the former apparently exceeding 

 the latter. The proportion of magnesium assumed to be in combination 

 with them as bromide and iodide amounts to 59.6 parts per million. This 

 brine is slightly purer than that of the Humboldt well, but its content of 

 salt is one-fourth less. 



3. Water from tlir artesian icrll at Jamestown, N. Dak. {page r>29). 



Ingredients dissolved in the water. 



Silica 



Alumina 



Carbonate of irou 



Carbonate of lime 



Sulphate of lime 



Sulphate of magnesia 



Suljihate of soda 



Sulphate of potash . . . 

 Chloride of sodium . . . 

 Phosphates 



Total 



35.7 



3.5 



2.2 



188.0 



249.0 



154.2 



1, 139. 4 



81.5 



369.1 



Traces. 



2, 222. 6 



Percent- 

 age. 



1.6 

 0.2 

 0.1 

 8.5 



11.2 

 6.9 



51.2 

 3.7 



16.6 



Grains per 

 gallon. 



2. 0823 

 .2041 

 .1283 

 10. 6743 

 14. 5241 

 8. 9944 

 66. 3602 

 4. 7523 

 21. 5296 



Hardness of this water, 21 degrees. In the test for the amount of its 

 dissolved organic matter, by Tidy's permanganate method, the oxygen 

 consumed in three hours was 0.7 part per million. 



