E. T. DUMBLE-THE SOILS OF TEXAS. 
57 
53* 
54* 
Insoluble matter. 
69.391 
11.291 
.258 
.084 
2.050 
.604 
.109 
3.454 
3.589 
.370 
.290 
1.047 
6.800 
71.082 
12.275 
.444 
.168 
.675 
.090 
.153 
3.058 
6.291 
.258 
.208 
Soluble silica. 
Potash. 
Soda. 
Lime. 
Magnesia. 
Manganese . 
Alumina. 
Phosphoric acid. 
Sulphuric acid. 
Carbonic acid.. 
Water and organic.. 
5.028 
99.337 
99.730 
* Cotton Production, Tenth Census, pp. 45 and 47. 
The soils of the Brazos river valley in the Coastal Plain are shown in 
the following analyses. 
The red or chocolate loam in Nos. 54 and 55. The former from Oyster 
creek, the latter from a point 50 miles by river channel from the Gulf. 
No. 56 is a Peach soil from the San Bernard, and No. 57 a similar soil 
from the same locality as No. 55. 
The sandy loam No. 58 is also from this locality. 
54* 
55* 
56* 
57+ 
58t 
Insoluble matter. 
Soluble silica. 
66.461 
13.950 
.781 
.226 
1.876 
1.907 
.013 
3.697 
4.020 
.148 
.034 
1.901 
j- 4.042 
78.59 
80.806 
6.203 
.441 
.085 
.596 
.607 
.069 
2.179 
3.685 
.055 
.030 
| 5.748 
76.45 
• 
84.31 
Potash . 
Soda. 
Lime. 
Magnesia. 
Manganese. 
1.09 
.85 
1.66 
.13 
.54 
.32 
.60 
.73 
.46 
.37 
2.74 
.24 
Iron. 
Alumina. 
Phosphoric acid. 
Sulphuric acid. 
Carbonic acid. 
Water. 
Organic and volatile. 
2.80 
6.05 
.136 
Trace. 
2.04 
3.04 
3.09 
2.60 
3.51 
Trace. 
.079 
.34 
4.62 
9.39 
2 36 
3.87 
.166 
Trace. 
2.24 
1.17 
1.54 
99.116 
100.504 
* Cotton Production, Tenth Census, p. 45. 
t Bulletin 25 , Tex. Ag. Ex. Sta. 
The rich soil of the Rio Grande valley is shown the following an¬ 
alysis of sample taken from near Brownsville: 
