[shutt-burwash] 



NATURE OF BURN-OUTS 



67 



drainage. It has an appreciable organic content, as is generally 

 found in subsoils in semi-arid districts. 



In 1684 and 1685 "B," as regards its mineral constituents and 

 physical properties, is similar to the corresponding member in 1681 

 and 1682 .but is slightly higher in organic matter following the richer 

 surface soil "A." 



In the burn-out group 1683 "B" does not difïer markedly in 

 physical characters from "A" in the same group, a mixture of clay 

 and fine sand with the former predominating. 



"C" and "D" throughout the w^hole five groups are quite 

 uniform in character. They are silty clay, with a larger proportion 

 of silt in D than in C. Both possess a small amount of fine or medium 

 sand. 



A partial analysis was made of the air-dried soils, obtaining the 

 results given in the following table. 



Partial Analysis of Air-dried Soils. 



—27 



