120 



(Method II.) 



No. 



20. 

 21. 

 22. 

 23. 

 24. 

 31. 

 32. 

 33. 

 34. 

 35. 

 36. 

 37. 

 38. 



Percentage of Soil sifted through 1 mm. 

 Sieve. 



Water. 



Percentage of Soil sifted through 

 3 mm. Sieve. 



Phos- 



Organic Chlorine. Nitrogen. Lime. Potash. phoric 



matter. oxide 



T28 

 44 

 58 

 36 

 40 

 38 

 10 

 11 



T27 

 19 



No. 

 1. 



14 



014 



007 



016 



002 



11 



008 



008 



14 

 33 

 19 

 13 



076 

 18-66 

 15-57 

 11-56 

 16-27 

 18-50 

 15-98 



60 

 trace. 



15 



082 



077 



16 



052 



28 



16 



20 



26 



12 



24 



04 



04 



029 



048 



068 



035 



018 



01 



01 



04 



07 



04 



09 



trace. 



trace. 



(Method V.) 



Potash. Phosphoric oxide. 

 017 -0036 



Sample No. 1, upon extraction by water, yielded '0013 per cent, of 

 phosphoric oxide, or slightly over one twentieth the amount extracted by 

 the standard hydrochloric acid method. 



No. 

 39. 



(Extraction by boiling with Hydrochloric acid.) 

 Water. Organic Chlorine. Lime. Potash. 



31 



Organic 

 matter. 



2-72 



019 



14 



44 



Phos- 

 phoric 

 oxide. 



018 



No. Field Cornetcy. 



1. Brak River. 



2. 



3. 



4- 



5. 



6. 



7. 



8. 



9. 



STEYNSBURG. 



(Officially collected.) 

 Farm or place. 

 Klerks Kraal. 

 Middel Water. 

 Zout Kuil. 



Van Vuuren's Kraal. 



Collector. 

 E. A. Nobbs. 



C. F. Juritz. 



The above soils were all taken from lands below the dam which 

 it was proposed to construct in connection with the Thebus Irrigation 

 project. No. 1 represents a typical Karroo* soil, and No. 2 a Karroo soil 

 of somewhat lighter character. No. 3 was taken from the side of a water 

 course after removal of the surface soil, and No-. 4 from lands which had. 

 been long under irrigation. Nos. 4 to 9 all represent surface soils, and, 

 like the preceding four samples, differed considerably in some respects, 

 especially in regard to the proportions of lime and potash contained from 

 Nos. 10 to 19 (see below). 



