ALKALI IN SOILS. 



37 



TABLE 11. Chemical composition of soils of Tozer oasis. 



The following table gives the composition of the totals of water- 

 soluble salts, of which the percentages, based on dry weight of soil, 

 are given in column 5 of the preceding table : 



TABLE 12. Composition of water-soluble salts in soils of Tozer oasis. 



