The: Waters of the Rio Grande 
25 
ALKALI 
From Uncultivated Land 
at Hooper, 
Greasewood (Sarcobatus) 
Abundant 
Analytical Results 
Combined 
Percent 
Percent 
Silicic acid . 
0.355 
Calcic sulfate. 
4.155 
Sulfuric acid . 
46.810 
Magnesic sulfate .. 
0.459 
Carbonic acid. 
3.451 
Potassic sulfate. 
3.143 
Chlorin . 
1.589 
Sodic sulfate . 
75.688 
Calcic oxid . 
1.712 
Sodic carbonate. 
8.321 
Magnesic oxid . 
0.153 
Sodic chlorid . 
2.621 
Potassic oxid . 
1.699 
Sodic silicate . 
0.721 
Sodic oxid . 
40.202 
Ferric and Alum, oxids 
0.081 
Ferric and Alum, oxids. 
0.081 
Manganic oxid. 
0.090 
Manganic oxid (br).... 
0.090 
Excess sodic oxid. 
0.505 
Ignition . 
(4.216) 
Ignition . 
(4.216) 
Sum . 
100.358 
Total . 
100.000 
Oxygen equivalent to 
chlorin . 
0.358 
Total . 
100.000 
THE WATER-SOLUBLE PORTION OF SOIL 
From the same locality 
from which 
the preceding alkali was taken. It 
equalled 1.935 percent of 
air-dried soil. 
Analytical Results 
Combined* 
Percent 
Percent 
Silicic acid . 
3.483 
Calcic sulfate. 
1.456 
Sulfuric acid . 
25.744 
Magnesic sulfate. 
0.345 
Phosphoric acid. 
0.211 
Potassic sulfate. 
8.256 
Carbonic acid. 
10.533 
Sodic sulfate . 
. 3 7.085 
Chlorin. 
9.702 
Calcic phosphate. 
0.461 
Calcic oxid . 
0.850 
Sodic carbonate. 
25.398 
Magnesic oxid . 
0.115 
Sodic chlorid . 
16.010 
Potassic oxid . 
4.483 
Sodic silicate . 
1617 
Sodic oxid . 
40.893 
Ferric and Alum, oxids 
0.030 
Ferric and Alum, oxids. 
0.030 
Manganic oxid (br) . . . 
0.050 
Manganic oxid (br) .... 
0.050 
Excess silicic acid. 
2.149 
Ignition . 
5.503 
Ignition . 
5.503 
Sum . 
101.552 
Total . 
99.360 
Oxygen equivalent to 
chlorin . 
2.186 
Total . 
99.366 
*The amount of water 
-soluble carbonates in this soil extract is 
noteworthy. 
The soil dried at ioo° C. was digested with hydrochloric acid for 
5 days and the solution gave the following results: 
