14 
BULLETIN 1311, IT. S. DEPARTMENT OF AGRICULTURE 
ULTIMATE CHEMICAL COMPOSITION OF THE COLLOIDAL 
MATERIAL 
COMPOSITIONS OF THE COLLOIDAL MATERIALS OF DIFFERENT SOILS 
The analyses of the colloidal material extracted from the soils that 
have been described are given in Table 3, the methods used being the 
same as for the soils themselves. 
Table 3. — Chemical analysis of colloids from various soils and subsoils 
No. 
Soil type from which colloid was 
extracted 
Depth 
SiOa 
Ti0 2 
AI2O3 
Fe 2 3 
1 
MnO 
CaO 
MgO 
K 2 
Na 2 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
P.ct. 
1 
Carrington loam, Iowa 
0"-12" 
44.89 
0.47 
22.59 
7.75 
0.057 
1.48 
1.44 
1.36 
0.22 
2 
Carrington loam, Iowa 
15"-36" 
48.04 
.65 
25.19 
8.80 
.032 
1.29 
1.53 
.89 
.38 
3 
Cecil clay loam, Maryland 
0"- 7" 
36.20 
.62 
28.59 
16.67 
.080 
.51 
1.32 
.54 
.02 
4 
Cecil clav loam. Georgia 
0"- 9" 
33.95 
.62 
36.06 
11.02 
.147 
.31 
.40 
.56 
.44 
5 Cecil clav loam. Georgia 
9"-18" 
31.84 
.53 
38.28 
10.04 
.136 
.35 
.23 
.46 
.28 
6 
Chester loam, Virginia 
0"- 7" 
0"- 8" 
34.82 
39.00 
1.14 
.58 
27.88 
15. 93 
.234 
.083 
. 17 
.93 
2.86 
.22 
.85 
1.24 
.08 
7 
Chester loam, Maryland 
29. 98j 11.27 
.32 
8 
Chester loam, Maryland 
8"-32" 
40.03 
.70 
30.581 11.34 
.034 
.36 
.78 
1.14 
.19 
9 
Clarksville silt loam, Kentucky.. 
0"-10" 
42.40 
.81 
26.49 10.05 
.372 
.62 
1.22 
" 1.76 
.25 
10 
Clarksville silt loam, Kentucky.. 
10"-36" 
43.68 
.63 
27.70 11.51 
. 150 
.48 
1.39 
1.65 
.34 
11 
Crowley silt loam, Louisiana 
0"-10" 
46.95 
.39 
27. 35 8. 77 
.020 
.99 
1.47 
.85 
.14 
12 
Dunkirk clay loam, New York.. 
0"- 8" 
43.02 
. 37 
27.92i 13.16 
.080 
.63 
2.32 
3.71 
.79 
13 
Fallon loam, Nevada 
0"-12" 
52.57 
.30 
16.49! 10.70 
.210 
2.20 
5.67 
1.97 
1.02 
14 
Hagerstown loam, Maryland 
0"- 8" 
39.93 
.55 
29. 02' 9. 45 
.108 
1.25 
1.53 
1.61 
.50 
15 i Hagerstown loam, Maryland 
8"-S0" 
41.63 
.57 
29. 86! 11.31 
.034 
.74 
1.42 
1.84 
.11 
16 Houston black clay, Texas 
0"-12" 
53.34 
.81 
20. 77 7, 15 
( 3 ) 
5.01 
1.39 
( 3 ) 
( 3 ) 
17 Huntington loam, Maryland 
0"- 8" 
37.79 
.40 
27.16 11.28 
.263 
.70 
1.30 
2.67 
.54 
18 Huntington loam, Maryland 
8"-30" 
39.54 
.47 
26. 77J 13.33 
.083 
.54 
1.32 
2.67 
.45 
19 Iredell day, North Carolina 
6"-24" 
42.58 
.46 
34. 26 4. 66 Trace 
.61 
1.43 
.10 
.39 
20 Luf kin clay, Mississippi 
5"-36" 
55.44 
.76 
22. 66; 8. 98 
.019 
1.85 
2.03 
.65 
.07 
21 
22 
23 
Manor loam, Maryland 
0"- 7" 
0"-20" 
0"-14" 
38.86 
40.36 
45.93 
.72 
.70 
.48 
31.11 10.33 
31.20 1 10.29 
21. 72j 8. 94 
.112 
.077 
.066 
.64 
.38 
1.19 
1.23 
1.35 
2.01 
1.37 
1.28 
2.28 
. 63. 
Manor loam, Maryland 
.45 
Marshall silt loam, Nebraska 
.21 
24 
Marshall silt loam, Nebraska 
14"-36" 
48.18 
.50 
22.00; 10.03 
.111 
1.36 
1.62 
2.07 
.15 
25 
Miami silty clay loam, Indiana . 
0"-40" 
46.37 
.70 
23.961 11.47 
.070 
.92 
2.15 
2.47 
.40 
26 
Miami silty clay loam, Indiana.. 
10"-30" 
48.48 
.79 
24. 12 
10.44 
.005 
1.39 
2.64 
2.88 
.86 
27 
Norfolk fine sandy loam, North 
C arolina 
0"- 8" 
38.25 
.79 
31.21 
11. 25 
.033 
.54 
.53 
.26 
.09 
28 
Norfolk fine sandy loam, North 
C arolina 
12"-36" 
0"-12" 
41.60 
38.01 
.71 
.38 
31.10 
23.30 
11.28 
10.84 
.005 
.152 
.34 
1.37 
.49 
2.34 
.46 
2.23 
.22 
29 
Ontario loam, New York 
.14 
30 
Ontario loam, New York 
12"-22" 
42.40 
.56 
24.71 
15.27 
.138 
1.13 
2.59 
2.39 
.51 
31 
Orangeburg fine sandy loam, 
Mississippi 
0"-10" 
40.35 
.54 
31.04 
10.11 
.185 
.51 
.73 
.81 
.24 
32 
Orangeburg fine sandy loam, 
Mississippi 
10"-36" 
0"- 8" 
40.35 
39.24 
.44 
.63 
33.27 
10.08 
.595 
.123 
.45 
.75 
.67 
1.16 
.81 
1.17 
.29 
33 
Sassafras silt loam, Maryland 
28.64 10.19 
.38 
34 
Sassafras silt loam, Maryland 
8"-22" 
41.14 
. 70 
29. 26 1 12.73 
.031 
.53 
1.07 
1.35 
.42 
35 
Sharkey clay, Mississippi 
Not cer- 
tain. 
0"- 4" 
50.63 
.88 
20. 74: 9. 07 
.060 
1.92 
1.80 
1.96 
.34 
36 
Sharkey clay, Mississippi 
51.34 
.51 
22. 61 S. 79 
w 
1.41 
2.48 
( 3 ) 
( 3 ) 
37 
Stockton clay adobe, California.. 
0"-12" 
48.95 
1.05 
21.54; 13.79 
.040 
.023 
1.47 
1.96 
2.16 
.28 
.03 
38 
Stockton clay adobe, California.. 
0"-38" 
49. 50 
1.14 
22.51: 10.57 
2.68 
.26 
.66 
39 
Stockton clay adobe, California.. 
38"-50" 
48.61 
.94 
22.23; 10.13 
.063 
1.70 
3.37 
.78 
.50 
40 
Susquehanna clay, Mississippi... 
0"- 4" 
36.97 
.50 
36.91. 10.44 
.300 
.20 
.42 
2.12 
.26 
41 
Susquehanna clay, Maryland 
5'- 6' 
43.71 
1.04 
28. 44 1 10.72 
.050 
.24 
2.56 
.86 
.78 
42 
Vega Baja clay loam. Porto Rico. 
0"-12" 
36.26 
.65 
32.85, 12.44 
.160 
.44 
.18 
.36 
.47 
43 
W abash silt loam, Nebraska 
0"-15" 
51.28 
.49 
20. 28 9.75 
.052 
2.19 
2.09 
1.91 
.21 
44 
"Wabash silt loam, Nebraska 
15"-36" 
50.55 
.56 
20. 87' 9. 57 
.033 
1.59 
2.21 
1.97 
.14 
45 
Yolo clay, California 
0"-18" 
46.25 
.31 
16.42 1( 
.100 
1.46 
5.64 
2.54 
1.36 
Not determined. 
