E. J. Russell and J. A. Prescott 77 



Agdell soil. Agdell soil, log. curves. 



^ 70 

 o 



aj 

 'S 60 



i 50 



8 40 



S 30 



a 2ot- 



a 10 



o . 



p^ 10 20 30q40 50 60 70 

 P2O5 mgm. per 1000 c.c. of solution 



Fig. 4 a. 

 Saxmundham soils. 



10 20 30c 40 50 60 70 80 

 PgOs mgm. per 1000 c.c. of solution 



Fig. 4 c. 

 Light soils. 



y=30-7 C6^ 



J I I I I I L 



10 20 30q 40 50 60 70 



PjjOg mgm. per 1000 c.c. of solution 



Fig. 4e. 



Saxmundham soils, log. curves. 



Logo 

 Mg. 4d. 



Light soils, log. curves. 



Fig. 4/. 



Fig. 4 a, c and 



Amounts of PzOg adsorbed by various soils in presence of N/10 HNO3. 

 Fig. 'Lb, d and /. The log. curves. 



