54 
Journal of Agricultural Research 
Vol. IX, No. a 
filled and otherwise treated like those with the 12 loam soils, except that 
at the conclusion of the experiment the soil was removed in 3-inch 
instead of i-inch sections (Table XIX). One cylinder of each group 
was opened at the end of 29, 63, and 78 days, respectively, while the 
remaining two were opened after 83 days. The distribution of moisture 
was very much the same at the end of 29 days as after 34 days more; 
but with the heavier application of water an appreciable downward 
movement took place between the sixty-third and the eighty-third day. 
The 0.5 inch of water distinctly raised the moisture content of the sand 
to a depth of 6 inches and the i-inch application to a depth of 12 to 15 
inches. The surface 3-inch layer showed a final ratio of 8 to 10. 
At the same time that water was added to the tops of the above 10 
cylinders of dune sand it was applied to the base of the soil columns 
in two others filled at the same time, 0.5 inch to one and 1.0 inch to the 
other. At the end of 83 days both were opened. The moisture content 
of the five sections 1 to 12, 13 to 15, 16 to 18, 19 to 21, and 22 to 24 
inches was 0.3, 0.5, 0.7, 4.4, and 7.1 per cent, respectively, in the former 
and 0.4, 0.5, 1.0, 5.6, and 12.1 per cent in the latter. In neither does 
the capillary movement seem to have extended beyond the ninth inch. 
The increase in moisture content in the higher sections is to be attributed 
to the movement of moisture through the soil atmosphere. 
Table XIX .—Distribution of water in cylinders filled with dune sand , they being allowed 
to stand from 2Q to 83 days after 0.5 inch of water had been added to those in experiment 
A and 1.0 inch to those in B 
A.—0.5 INCH OF WATER ADDED 
Depth of section. 
Cylinder 
I (29 
days). 
Cylinder 
II (63 
days). 
Cylinder 
III (78 
days). 
Cylinder 
IV ( 83 
days). 
Cylinder 
as. 
Average. 
Inches. 
Per cent. 
Per cent. 
Per cent . 
Per cent . 
Per cent. 
Per cent. 
*”3 ... 
6. 2 
5 - 7 ! 
6. 2 
5*8 
6. O 
6. 0 
4~6 .. 
2. 6 
2. 2 
2. 6 
2.7 
3*0 
2. 6 
7-9 . 
•4 
•5 
•5 
• 5 
*5 
•5 
10-12. 
. 2 
. 2 
*4 
• 4 
*4 
•3 
13-15 . 
. 2 
•3 
•5 
*4 
*4 
•4 
16-18. 
. 2 
. 2 
•3 
.4 
*4 
•3 
19-21. 
. 2 
. 2 
*4 
• 4 
•3 
•3 
22-24. 
. 2 
*3 
■3 
•3 
*4 
•3 
Average, 1-24. 
1*3 
1. 2 
1. 6 
1.4 
!*3 
Average, 1-12. 
2*3 
2. 1 
2.4 
2.4 
2*5 
2.4 
Average, 13-24. 
. 2 
. 2 
•4 
.4 
•4 
*3 
B.— 1.0 INCH 
OF WATER ADDED 
1-3 . 
5 -a 
5*5 
4. 1 
3*4 
4*5 
4*7 
4*6 . 
4.6 
4.9 
4.4 
3*6 
4.0 
4*3 
7-9 . 
4*3 
4.0 
3-9 
3*6 
3 * a 
3-9 
10-12. 
4.1 
3*6 
3*9 
3*7 
3*9 
3 * 8 
13-15. 
. 6 
. 6 
2.9 
3-6 
3*3 
2. 2 
16-18. 
.6 
*3 
• 7 
i -5 
.6 
•7 
19-21... 
.6 
•4 
.8 
•5 
•5 
. 6 
22-24 . 
. 6 
•3 
• 3 
*4 
*5 
*4 
Average, 1-24. 
2.6 
2.4 
2. 6 
2. 5 
2.7 
2. 6 
Average, 1-12. 
4*7 
4*5 
4. 1 
3-6 
4 * 1 
4. 1 
Average, 13-24. 
.6 
•4 
1. 2 
i *5 
1. 2 
1.0 
