71 



O 1 2 J ? S 6 7 a 9 tO // /2 /3 



Fig. 50. 'Outlines of percolation imilcv five furrows in gritty clay loam. 



(O. E. S. Bulletin 203, U. S. Department of Agriculture.) 



Fig-. 51. Outline of percolation in sandy soil from 

 furrow 10 inches deep in seven bourn. 



(O. E. S. Bulletin 203, U. S. Dept. Agr.) 



2. Outline of percolation in sandy soil from 

 furrow ."5 inches deep in seven hour;). 



