Relation of Nonavailable Water to Hygroscopic Coefficient 75 
thruout the five feet of subsoil, there being practically no differ- 
ence even between that in the second foot and that in the lower 
part of the sixth foot. In the surface foot the moisture content 
increased rapidly from the top to the bottom. The average con- 
tent of free moisture in the first foot was — 1.5 per cent and in 
the five feet of subsoil 0.8 per cent. The roots were numerous 
thruout the subsoil and quite uniformly distributed, as will be 
seen from both Table 17 and figure 19. 
Table 17. — Data on experiment with beans in 1910. 
Weight of dry soil and subsoil in cylinder, in grams 
Weight of water in subsoil, February 5, in grams . . . 
Weight of water in subsoil, May 13, in grams 
Weight of water lost in 97 days, in grams 
Average height of plants, in inches 
Number of pods which produced seeds 
Number of seeds 
Weight of seeds, air-dry, in grams 
Weight of leaves, stems, and pods, air-dry, in grams . 
Weight of crop, dried at 110° C, in grams 
Weight of water lost per gram of crop, in grams . . 
Time from planting of seed to death of plants, in days 
Weight of roots, dried at 110 c 
Weight of roots, dried at 110° 
Weight of roots, dried at 110 c 
Weight of roots, dried at 1 10 c 
Weight of roots, dried at 110 c 
Total weight of roots in subsoil, in grams 
Date of death of last plant . . 
Date of opening cylinder . . . 
C, in 2d foot, in grams . 
C, in 3d foot, in grams . 
C, in 4th foot, in grams 
C, in 5th foot, in grams 
C, in 6th foot, in grams 
Per cent of total water in surface foot of soil, February 5 . 
Per cent of total water in subsoil, February 5 
Per cent of total water in surface foot on opening cylinder 
Per cent of total water in subsoil on opening cylinder 
I 
II 
43,593 
44,102 
5,333 
2,849 
2,967 
5,371 
5,366 
o 
8 
11 
o 
3 
4 
14 
14 
2.24 
2.77 
5.25 
5.10 
6.92 
7.10 
776 
756 
97 
97 
.063 
.082 
.073 
.081 
.084 
.118 
.091 
.111 
.074 
.094 
.385 
.486 
May 13 
Mav 13 
May 13 
May 13 
25.0 
25.0 
18.0 
18.0 
7.5 
7.6 
6.4 
6.6 
