FIG. 28. 



A cone of soil to show capillarity. Water poured about the 

 base of this cone of soil has been drawn by capillary force 

 half-way to the top. 



A. B. C. D. 



FIG. 2Q. 



To show the relative amounts of film-moisture held by 

 coarse and fine soils. The colored water in bottle A repre- 

 sents the amount of water required to cover the half pound 

 of pebbles in the tumbler B with a film of moisture. The col- 

 ored water in bottle C shows the amount required to cover the 

 soil grains in the half pound of sand in tumbler D. 



