CHEMICAL COMPOSITION OF KARROO ASH. 



141 



TABLE I. 

 Analyses of Karroo Ash.* 



. * Black type indicates farm-burnt samples ; ordinary type indicates 

 samples burnt in tbe laboratory. 



No. Potash. 



1 



2 

 3 



4 



5 

 6 



7 

 8 



9 



10 



II 

 12 



13 



14 



15 

 16 



17 

 18 



19 

 20 



21 



22 



23 



24 

 25 

 26 



27 

 28 

 29 



30 

 31 

 32 

 33 

 34 

 42 

 43 



Per cent. 



.54 



13.70 



2.30 



11.96 



5.1B 

 19.27 

 15.09 



7-65 



15-27 

 14.92 



6.54 

 3.79 

 3-25 

 8.86 



571 

 7.08 



340 



5.26 



9.39 



11.43 



12.02 



7.00 



11.41 



12.07 



1 8.04 



10.43 

 10.66 



7-SS 

 12.48 



9.04 



11.44 



7.32 



4 01 



9.33 



Lime. 

 Pvr cent. 



10.19 



34-30 

 26.94 



20.77 



25-93 

 24-85 

 14.29 



10.18 



8.67 



31.08 



19.69 



34-90 



14-15 

 10.46 



18.62 



19.05 



20.76 



36.99 



KJ.50 

 33.83 

 36.54 



32.43 



24.55 

 21.52 



16.09 



19.40 



15.66 



15.56 



14.59 



4.99 



22.67 



Excluding- the seven samples whose analyses were less com- 

 plete than the others, namely, Nos. i, 2, 3, 5. 8, 42, and 43. 

 the results obtained from the remaining 29 Karroo ashes may 

 be summarised in the same way as the analyses of Mr. Croghan 

 were earlier in this paper — 



