8 
COMPOSITION OF THE SOIL PARTICLES. 
Analyses of the soil particles were made by fusion with sodium car- 
bonate. The results are given in the following table: 
Composition of the soil particles. 
SILICA CONTENT. 
Soil particles. 
Clay 
Fine silt — 
Silt 
Fine sand . . 
Coarse sand. 
Soil 
No. 164. 
Per cent. 
32.70 
30.10 
1.72 
2.33 
Soil 
No. 291. 
Per cent. 
47.75 
42.80 
35.50 
32.50 
29.90 
Soil 
No. 292. 
Per cent, 
44.25 
44.75 
38.00 
43.95 
33.25 
Soil 
No. 339. 
Per cent. 
38. 10 
37.90 
34.50 
31.70 
31.75 
Soil 
No. 392. 
Per cent. 
32.50 
28.10 
20.60 
25.60 
22.80 
Soil 
No. 428. 
Per cent. 
20.35 
31.70 
34.30 
38.10 
36.15 
Soil 
No. 448. 
Per cent. 
12.48 
20.70 
16.30 
19.05 
27.28 
Soil 
No. 474. 
Per cent, 
34.30 
42. 40 
36.50 
39.40 
33.45 
Soil 
No. 547. 
Per cent. 
32.10 
24.80 
6.37 
7.36 
10.92 
IRON CONTENT. 
Clay 
19.21 
15.30 
45.80 
39.25 
15.30 
18.98 
26.60 
32.15 
23.92 
11.53 
13.36 
18.28 
29.05 
17.10 
15.85 
15. 81 
20.90 
30.60 
20.95 
16.80 
16.42 
18.90 
18.92 
18.05 
12.86 
18.05 
16.70 
17.98 
16.60 
25.16 
30.50 
31.60 
24.95 
22.70 
10.01 
9.61 
10.56 
15. 96 
14.96 
22 35 
Fine silt 
Silt 
23.70 
43.90 
Fine sand 
41.70 
39 10 
ALUMINA CONTENT. 
Clay.. 
Fine silt 
Silt 
Fine sand . . 
Coarse sand. 
32.29 
28.95 
13.72 
30.82 
27.53 
26.52 
23.93 
22.48 
33.37 
30.86 
29.51 
26.64 
10.94 
13.60 
40.39 
37.95 
34. 24 
26.05 
34.75 
42.92 
39.05 
40.91 
38.93 
49.13 
47.95 
26.68 
24.16 
20.72 
23.87 
48.42 
36.44 
34.71 
41.14 
20.42 
30.15 
29.60 
32.50 
30.02 
27.26 
32.40 
35.22 
17.19 
30.50 
36.41 
TITANIUM CONTENT. 
Clay 
8.91 
15.29 
26.50 
21.45 
3.45 
4.72 
6.40 
4.38 
2.99 
3.16 
3.31 
5.47 
5.68 
1.79 
2.92 
4.52 
7.22 
8.37 
2.94 
2.77 
3.70 
5.79 
5.4£ 
3.34 
3.62 
3.89 
5.87 
4.36 
3.35 
4.52 
5.92 
7.48 
7.68 
3.54 
2.19 
2.59 
7.41 
2.21 
3.39 
6.31 
Fine silt 
10.19 
Silt 
17.23 
Fine sand 
14.32 
12.01 
PHOSPHORIC ACID CONTENT. 
Clay 
0.39 
1.76 
.25 
.68 
0.47 
1.53 
.57 
.66 
.95 
1.70 
2.22 
.81 
.53 
.61 
0.84 
1.02 
.54 
.54 
.61 
0.91 
2.08 
.15 
.41 
.38 
1.32 
1.58 
.67 
.63 
.38 
1.65 
1.74 
.81 
.65 
.56 
4.47 
4.45 
1.83 
1.51 
1.19 
1.24 
Fine silt 
1.64 
Silt 
.58 
.38 
.88 
MANGANESE CONTENT. 
Clay 
0.20 
.29 
.60 
.40 
0.54 
.55 
1.30 
.68 
2.60 
0.11 
.39 
.97 
.61 
1.24 
0.04 
.45 
.54 
.41 
1.88 
0.34 
2.43 
3.18 
5.12 
8.75 
0.11 
1.08 
1.41 
.49 
1.17 
0.18 
.31 
.57 
.42 
.68 
0.46 
.53 
.66 
.67 
.95 
0.15 
Fine silt 
.33 
Silt 
.46 
Fine sand 
.60 
Coarse sand 
4.35 
LIME CONTENT. 
Clav 
0.72 
.96 
.30 
1.04 
1.09 
1.73 
1.47 
3.50 
1.33 
1.56 
3.29 
.83 
1.10 
4.37 
1.11 
.97 
.92 
.98 
1.79 
1.25 
1.63 
1.66 
.90 
1.24 
2.46 
6.43 
5.90 
8.28 
7.63 
1.32 
1.29 
1.13 
2.08 
3.05 
3.04 
6.50 
6.46 
6.77 
6.92 
1.16 
Fine silt 
.87 
Silt 
.69 
Fine sand 
1.02 
Coarse sand 
2.23 
