COLORADO IRRIGATION WATERS AND THEIR CHANGES. 63 
TABLE LIIL—ANALYSIS OF ARKANSAS RIVER WATER, 
TAKEN AT BRIDGE NEAR ROCKYFORD, APRIL 24, 1903. 
Grs. 
Analytical 
Per 
Imp. 
Results. 
Cent. 
Gal. 
Silicic Acid_ 
_ 0.428 
0.669 
Sulfuric Acid_ 
. 48.299 
75.540 
Carbonic Acid_ 
1.858 
2.905 
Chlorin_ 
_ 4.667 
7.299 
Sodic Oxid __ 
. 18.662 
29.187 
Potassic Oxid .. 
0.326 
0.510 
Calcic Oxid. 
. 17.090 
26.729 
Magnesic Oxid. _ 
5.993 
9.373 
Ignition 
4.346 
6.797 
Sum _ _ 
101.669 
159.010 
Oxygen Eq. to Cl._ 
. 1.051 
1.644 
Total_ 
.100.618 
157.366 
Grs. 
Per 
Imp. 
Combined. 
Cent. 
Gal. 
Calcic Sulfate .. ... 
41.523 
64.942 
Magnesic Sulfate __ 
17.899 
27.994 
Potassic Sulfate ... 
0.602 
0.942 
Sodic Sulfate_ 
20.747 
32.449 
Sodic Chlorid_ 
7.701 
12.044 
Sodic Carbonate _ 
4.480 
7.007 
Sodic Silicate ... _. 
0.868 
1.358 
Ignition_ 
4.346 
6.797 
Sum_ 
98.166 
153.533 
Excess Sodic Oxid 
2.450 
3.832 
Total __ 
100.616 
157.365 
Total solids 156.4 grains per imperial gallon. 
SANITARY 
Parts Per Million. 
Total Solids_2,234.290 
Chlorin_ 103.971 
Nitrogen as Nitrates_ 1.500 
Nitrogen as Nitrites. 0.040 
ANALYSIS. 
Parts Per Million. 
Saline Ammonia_ 0.065 
Albuminoidal Ammonia_ 0.140 
Oxygen consumed_ 2.000 
TABLE LIV.—ANALYSIS OF WATER FROM QUEEN RESER¬ 
VOIR, SAMPLE TAKEN JANUARY 23, 1903. 
Grs. 
Grs. 
Analytical 
Per 
Imp. 
Per 
Imp. 
Results. 
Cent. 
Gal. 
Combined. 
Cent. 
Gal. 
Silicic Acid_ 
.... 0.273 
0.197 
Calcic Sulfate._ _ 
._ 36.765 
26.581 
Sulfuric Acid. _ 
.... 48.973 
35.407 
Magnesic Sulfate 
._ 23.705 
17.139 
Carbonic Acid 
3.370 
2.437 
Potassic Sulfate . 
.. 0.911 
0.659 
Chlorin .. 
.... 3.810 
2.755 
Sodic Sulfate. ___ 
.. 19.900 
14.388 
Sodic Oxid_ 
.... 17.066 
12.339 
Sodic Chlorid _ 
._ 6.287 
4.546 
Potassic Oxid . 
. 0.493 
0.356 
Sodic Carbonate.. 
8.125 
5.874 
Calcic Oxid.. . 
... 15.095 
10.914 
Sodic Silicate _. . 
_. 0.554 
0.401 
Magnesic Oxid _ 
7.937 
5.738 
Ferric and Al. Oxids 0.075 
0.054 
Ferric and Al. Oxids 0.075 
0.054 
Manganic Oxid 
._ 0.075 
0.054 
Manganic Oxid. 
0.075 
0.054 
Ignition __ 
[3.692] 
2.669 
Ignition .. 
[3.692] 
2.669 
Sum _ . . . 
..100.089 
72.365 
Sum_ 
....100.859 
72.920 
Excess... .. 
. None 
None 
Oxygen Eq. to 
Cl. 0.859 
0.621 
Total__ 
..100.089 
72.365 
Total_ 
....100.000 
72-299 
Total solids 72.3 grains per imperial gallon. 
SANITARY ANALYSIS. 
Parts Per Million. 
Total Solids_1,032.850 
Chlorin_ _ 47.529 
Nitrogen as Nitrates_ Trace 
Nitrogen as Nitrites_ 0.010 
Parts Per Million. 
Saline Ammonia__ 0.060 
Albuminoidal Ammonia_ 0.620 
Oxygen consumed_ 6.415 
