9 
The Waters oe the Rio Grande 
Sanitary Analysis 
Parts per Million 
Total solids . 77.0000000 
Chlorin. .0001400 
Nitrogen as nitrates. None 
Nitrogen as nitrites. .0000700 
Saline ammonia . .0000014 
Albuminoidal ammonia . .0000021 
SAMPLE TAKEN AT DEL NORTE 
Analytical Results 
Percent 
Carbon . 3.032 
Silicic acid . 32.102 
Sulfuric acid . 7.870 
Carbonic acid. 14.710 
Chlorin. 1.514 
Calcic oxid . 1 9.350 
Magnesic oxid . 3.428 
Potassic oxid . 2.893 
Sodic oxid . 8.481 
Ferric oxid . 0.721 
Aluminic oxid . 0.399 
Manganic oxid (br). 0.120 
Ignition . (5.722) 
Sum . 100.342 
Oxygen equivalent to 
Chlorin . 342 
Total . 100.000 
Combined 
Grains per 
Imp. Gal. 
Calcic Sulfate. 0.7753 
Calcic Carbonate. 1.4301 
Magnesic Carbonate . . . 0.4105 
Sodic Carbonate . 0.0166 
Sodic Chlorid . 0.1447 
Sodic Silicate . 0.7798 
Potassic Silicate. 0.2749 
Ferric oxid . 0.0412 
Aluminic oxid . 0.0231 
Manganic oxid. 0.0069 
Carbon . 0.1716 
Excess Silicic acid. 1.3767 
Total. 5.4559 
Total solids in the water 5.46 grains per imp. gal.; loss on ignition 1.26 
grains. The loss on ignition probably includes a large part, if not all, of the 
carbonic acid, owing to the action of free silicic acid. 
