538 
Journal of Agricultural Research 
Vol. XI, No. ii 
centration of the soil solution in the soil were measurable in the second 
layers of soil after 5 days, and at the end of 10 days movement had taken 
place throughout the soil mass in one case and to the third section in 
another. 
Table III .—Changes in concentration of the soil solution induced by the addition of 2 
per cent of potassium chlorid to a silt loam with 20 per cent of water 
Distance from salt layer. 
Freezing-point lower¬ 
ings. 
Distance from salt layer. 
Freezing-point lower¬ 
ings. 
5 days. 
10 days. 
S days. 
10 days. 
Inches . 
A . 
0. 000 
. OOO 
.015 
. 290 
. 980 
I. 100 
O. OOO 
. Ol 8 
. 070 
•425 
. 720 
.8*5 
Inches . 
0. 
0-939 
• 360 
. 012 
. OOO 
. OOO 
,0. 840 
•435 
• 135 
. oco 
. 010 
7 . 
1. 
2 ......... 
2 . 
A . 
T.t . . • 4 ♦ , » * 
MOVEMENT OF SOLUBLE SALTS THROUGH COARSE-TEXTURED SOILS 
After having proved conclusively that an appreciable movement of 
salts from regions of greater to those of lesser concentration take place 
in fine-textured soils, it was considered advisable to continue the studies 
with coarse-textured materials. Accordingly a coarse grade (No. 1) 
of quartz sand was treated with 0.45 per cent of sodium chlorid, and the 
changes in the concentration in the various layers resulting from the 
treatment after 5-, 10-, and 20-day periods, respectively, were deter¬ 
mined in the usual manner. In this series glass containers were em¬ 
ployed, but instead of being placed in a horizontal position they were 
stood upright in the chamber. The results given in Table IV reveal 
that the upper movement after 5 days reached the first inch of soil and 
had progressed downward into the second inch. After 10 days the 
concentration of the solution was slightly greater in these sections than 
at the end of the previous period, and after 10 days' movement had 
progressed 1 inch farther in each direction. The more rapid downward 
movement, it seems, may be accounted for by the downward move¬ 
ment of water, inasmuch as 3 per cent approaches the maximum film 
capacity of this material. 
Table IV. —Changes in the concentration of the soil solution induced by the addition 
of 0.45 per cent of sodium chlorid to a coarse quartz sand with 3 per cent of water 
Distance from salt 
layer. 
Freezing-point lowerings. 
Distance from salt 
layer. 
Freezing-point lowerings. 
S days. 
10 days. 
20 days. 
S days. 
10 days. 
20 days. 
Inches . 
4. 
O. OOO 
. OOO 
. OOO 
. 020 
O. OOO 
. OOO 
. OOO 
. 040 
0. OOO 
. OOO 
. 005 
.015 
Inches . 
1. 
O. 140 
. 060 
. 000 
.OOO 
O. 130 
. 070 
. OOO 
. OOO 
0.01$ 
. 020 
. OIO 
. OOO 
7 . 
2 
2. 
1. 
A .. , , . 
0.... 
T. 
