58 
Journal of Agricultural Research 
Vol. IX, No. a 
subsoil. This field was planted to com in 1912; but an area 50 feet 
square, near the center of the field and less than 100 yards from both the 
exposed subsoil and the place where soil D had been collected, was kept 
free from all vegetation, but was cultivated the same as though it had 
been in com. Moisture determinations parallel to those on the exposed 
subsoil were made here. 
Table XXII .—Hygroscopic coefficients , nitrogen, and organic carbon of the inch sections 
of surface foot in the areas near the Nebraska Experiment Station used for a detailed 
moisture study 
FALLOW FIELD 
Depth. 
Inches, 
1 ... 
2 . 
3 . 
4 . 
5 . 
6 . 
7 . 
8 .... 
9 . 
10 . 
11 . 
12 . 
Average, 1-6. 
Average, 7-12 
Average, 1-12 
Hygroscopic coefficient. 
Nitro¬ 
gen. 
Organic 
carbon. 
Set I. 
Set II. 
Set III. 
Set IV. 
Aver¬ 
age. 
8.7 
8.5 
8.8 
7*9 
8*5 
Per ct. 
0. 237 
Per ct. 
8-S 
8.2 
8.7 
8.6 
8.5 
•235 
2. 78 
8-5 
8.9 
9*3 
9.0 
8.9 
•233 
8. 2 
8.5 
9.2 
9.0 
8.7 
•233 
8.5 
8.7 
8.7 
9.2 
8.8 
•253 
8.7 
8.7 
9*2 
8.5 
8.8 
•251 
8.8 
9*4 
9*3 
8.0 
8.9 
*239 
8.7 
9.9 
10. 5 
8.4 
9*4 
. 211 
2. 27 
9*3 
9.6 
10. 5 
9*2 
9*7 
. 188 
10.3 
10. 0 
11. 2 
9*3 
10. 2 
. 171 
11. 1 
10. 5 
11. 6 
9.8 
10. 8 
. 164 
I. 86 
11. 2 
ii* 3 
12. 6 
io* 5 
11. 4 
• 154 
8.5 
9.9 
9.2 
8.6 
10. 1 
9.4 
9 * 0 
11. 0 
10. 0 
8.7 
9.2 
9.0 
8.7 
10. 1 
9*4 
. 214 
EXPOSED subsoil 
1 
2 
3' 
4 
7 - 
8, 
9 
10. 
11. 
12. 
Average, 1-6. 
Average, 7-12 
Average, 1-12 
12. 7 
12. 7 
12. 8 
13-2 
13.2 
13. 2 
12.8 
12. 7 
12. 7 
12.3 
12.4 
12. 2 
12.5 
12.6 
13.0 
13 - 2 
12. 6 
12. 5 
12. 6 
12. 6 
12. 7 
12. 4 
12. 7 
12. 9 
12. 6 
12. 6 
12. 9 
13. 2 
12. 9 
12. 9 
12. 7 
12. 7 
12. 7 
12.4 
12. 6 
12. 6 
.047 
.047 
‘O45 
0.25 
.044 
.044 
. 041 
. 040 
. 038 
.038 
.038 
.038 
.036 
. 18 
. 18 
13.0 
12.5 
12. 7 
12. 7 
12. 6 
12. 7 
12. 9 
12. 6 
12. 7 
. 041 
Four sets of samples from this fallow area and two sets from the 
exposed subsoil, all taken for moisture determinations, were employed 
for the determination of the hygroscopic coefficient. The data from the 
different sets from the same field (Table XXII) are so similar for the 
corresponding soil layers of the surface foot that it appears permissible 
