LOSSES OF MOISTUEE AND PLANT FOOD BY PERCOLATION. 35 



8 



r^ M t> o <N o i> t^ i 



co cot > -ocooooO'-ico incsco 



00 ... cOOCOOOOCXNO'-'Tt -OOt^OS 



COCO -CO 

 OO -O 



oo -oo -ooooo -oooo -oo -oo 



-IMCOIN F-I -CM^H 



