ANALYSES OF WATERS. 



10. Hater from Biij Stone Lake. 



543 



Oxygen coiLsuined by organic niatter in the permanganate test, 1.32 

 parts per million. This water is remarkable for its large proportion of 

 silica. 



11. Water from the Mississiitpi Elver at lirainerd, Minn. 



Ingredients dissolved in the water. 



Silica 



Alumina 



Carbonate of iron 



Carbonate of lime: 



Carbonate of magnesia 

 Carbonate of potash . . . 



Carbonate of soda 



Sulphate of soda 



Chloride of sodium 



Nitrates 



Phosphates 



Total 



18.2 



3.9 



4.2 



111.1 



27.7 



6.0 



19.4 



3.0 



1.5 



Traces. 



(') 



9.3 

 2.0 

 2. 2 

 57.1 

 14.2 

 3.1 

 9.9 

 1.5 

 0.7 



195.0 



Grains per 

 gallon. 



1. 0616 

 .2275 

 .2453 



6. 4787 



1. 6169 

 .3499 



1. 1292 

 .1749 

 .0875 



11. 3715 



' Slight traces. 



Oxygen required for the oxidation of organic matter by the perman- 

 ganate test, 1.28 parts per million. 



