46 
Journal of Agricultural Research 
Vol. IX, No. 3 
a hygroscopic coefficient of 5.6 and situated in the second to the fifth foot 
below the surface would, after prolonged heavy rains, if protected from 
transpiration losses, as by clean fallowing, lose water by downward 
movement until it approached 14.0 per cent, while if exposed for six 
months to hot, rainless weather it would still carry not less than about 
11 per cent, the available water then varying between approximately 8 
and 5 per cent. 
• Table XIII .—Loss of water from a uniform soil , D, protected from all loss at the sides 
and bottom, but fully exposed to evaporation at the surface. All of the cylinders were 
filled on September 2, No. I and II with soil containing 24.4 per cent and No. Ill and 
IV with soil containing 30.6 per cent of water* All were opened at the end of 78 days 
Depth of section. 
Water content on opening cylinder. 
Loss of water. 
Cylin¬ 
der I. 
Cylin¬ 
der II. 
Aver¬ 
age. 
Cylin¬ 
der III. 
Cylin¬ 
der IV. 
Aver¬ 
age. 
Cylin¬ 
der 
i-n. 
Cylin¬ 
der 
III-IV. 
Inches* 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct. 
Per ct* 
T ,. T . 
c 7 
A, % 
c. 0 
IQ. 4 
8.3 
T O 
7.2 
O’ 
7-7 
7*3 
7*3 
7-3 
7 T 
16. 7 
23*3 
11. 8 
12. 3 
12. 0 
11. 6 
11. 6 
11. 6 
12. 4 
19. 0 
16. 0 
I4.9 
15-4 
16. 0 
14. 8 
* 5-4 
9.0 
15*2 
5 . 
i 7-3 
l6. 4 
16.8 
* 7*5 
17-3 
17-4 
7.6 
13. 2 
6.. 
17-7 
17. O 
17-3 
19. 2 
17. 2 
18. 2 
7 - 1 
12. 4 
7 .*.. 
18. 1 
17.7 
* 7-9 
19. 8 
18.8 
19-3 
6.5 
11. 3 
8. 
10. 3 
l8. 2 
18. 7 
20. 3 
IQ. 2 
19. 7 
5. 7 
10. 9 
9 *. 
y 0 
19.7 
19. O 
19*3 
J 
20. 8 
7 
19.9 
20. 3 
5 *i 
10. 3 
20.0 
IQ. O 
IQ. 1? 
21.1 
20. 7 
20 . Q 
4.9 
9. 7 
20.3 
19. 8 
7 J 
20 . O 
22. 0 
21. 3 
7 
21. 6 
4.4 
9.0 
20.4 
20. 6 
20.5 
22. 4 
21. 7 
22. 0 
3*9 
8. 6 
13 . 
21.5 
20. s 
21.0 
23.0 
22. 5 
22. 7 
3*4 
7*9 
14 . 
21.7 
20. 6 
21.1 
23*3 
22. 8 
23*0 
3*3 
7.6 
15 . 
22.1 
20. 7 
21.4 
23-5 
22. 8 
23. 1 
3 *o 
7*5 
22.0 
20. 9 
21.4 
23. 6 
23. 6 
23. 6 
3 *o 
7.0 
17 ... 
22.4 
21. 4 
21.9 
23- 5 
24. 0 
23-7 
2. 5 
6.9 
18 .. 
22. 6 
21. 2 
21.9 
24. 2 
24. 5 
243 
2. 5 
6.3 
19 . - . 
22. 3 
22. 5 
21.9 
24. 0 
24*9 
24.4 
2. 5 
6. 2 
22. 6 
22. 5 
22.5 
25.0 
24* 7 
24. 8 
i *9 
5*8 
22. 0 
22. 0 
22.0 
25. 0 
24. 9 
24.9 
2.4 
5*7 
22. 3 
22. 1 
22.2 
25 -1 
25 -1 
25-1 
2. 2 
5*5 
*3 . 
22. 3 
22. 3 
22.3 
25. 2 
25. 6 
25-4 
2. 1 
5*2 
24. 
22. 3 
22. 4 
22.3 
25. 0 
25 -3 
25-1 
2.1 
5*5 
25. 
22, 6 
22. 4 
22.5 
25. 2 
25. 1 
25* 1 
1.9 
5*5 
22. 6 
22. 3 
22.4 
25 -3 
24.9 
25.1 
2. 0 
5*5 
27- .. 
22. 6 
22. 4 
22.5 
25- 5 
25. 6 
25 - 5 
!*9 
5 *i 
28. 
23. 0 
22. 4 
22.7 
25. 6 
25 -4 
25 - 5 
i *7 
5 *i 
29. 
23.0 
22. 5 
22.7 
25-9 
25. 8 
25. 8 
i *7 
4-8 
30 . 
22. 9 
22. 6 
22.7 
25. 8 
25-5 
25. 6 
i *7 
5-0 
3 1 . 
23. 1 
22. 7 
22.9 
25- 5 
25. 2 
25-3 
i*S 
5*3 
32 . 
22. 6 
22. 8 
22.7 
25.6 
25. 2 
25-3 
i *7 
5*3 
33 . 
22. 9 
23. 2 
23.0 
25*9 
25 -4 
25.6 
1.4 
5 *o 
34 . 
23. 0 
23. 2 
23.1 
24. 8 
25 - 5 
25.6 
i *3 
5 *o 
35 . 
22. 8 
22. 8 
22. 8 
26. 0 
25- 7 
25.8 
1. 6 
4. 8 
36. 
22. 6 
22. 6 
22. 6 
26. 0 
( G ) 
26. 0 
1.8 
4.6 
Average: 
1 - 3 * .. 
8.6 
7-9 
8. 2 
9.4 
9-4 
9*4 
16. 2 
21.1 
1-6 . ; . 
12. 8 
12. 0 
12. 4 
14-3 
13- 6 
13*9 
12. 0 
16. 6 
i -9 . 
14. 8 
14.1 
14.4 
16. 6 
158 
16. 2 
9*9 
14.4 
I— 12 . . 
16. 2 
i 5 - 5 
15-8 
18.0 
17. 2 
17. 6 
8.6 
12. 9 
13-24 . 
22. 2 
21. 5 
21. 8 
24. 2 
24. 2 
24. 2 
2. 6 
6.4 
*5-36. 
22. 8 
22. 6 
22. 7 
25.6 
25-4 
25*5 
i *7 
5 *i 
0 36.0 used to obtain average. 
