44 



(Method II.) 

 Percentage of soil sifted through 1 mm. sieve. 



Percentage of soil sifted through 

 3 mm. sieve. 



To refer once again to the five samples of soil Nos. 13, 14, 17, 18, 

 and 19 collected in the Durban and Tygerberg Field-cornetcies, from 

 areas where Erysiphe graminis had infested the wheat crops; the analyses 

 indicate that the average composition of the soils from the cultivated lands 



