CAMPBELL'S SOIL CULTURE MANUAL 



119 



of light, loose, and dry soil; B represents a stratum of 

 thoroughly pulverized and firm soil, meaning the portion 

 that is cut by the plow and then sub-packed; C repre- 

 sents about eight inches of the subsoil into which water has 

 percolated, and D represents the portion of subsoil still 

 below that is yet dry. 



In section 2, we find the mulch has been compacted by 

 a heavy fall of rain. This mulch in its loose condition 

 readily takes in the water, and as soon as the water reaches 

 the moist soil found in strata B and 0, it immediately 



1 2 3 



Cut No. 14. Showing How Water is Stored in the Soil. 



percolates down below, and is shown by the darker portion 

 of soil in the upper part of stratum D. Here the water ha* 

 come in contact with dry soil, which resists percolation 

 Slowly and steadily by gravity the water finds its waj 



