26 Transactions of the South African Philosophical Society. 



We cannot, of course, generalise from the results of two analyses ; 

 all that can here be said is that these two differ from those of the 

 Table Mountain and Witteberg sandstones, on the one hand, by 

 showing adequate proportions of lime and potash, and from the 

 Bokkeveld soils, on the other, in their relatively low phosphoric 

 oxide. The matrix of the rocks constituting the conglomerates is 

 composed of quite a variety of minerals, amongst which felspar, 

 augite, and calcite are prominent, and would probably disintegrate 

 into just such soils as are typified in the above two analyses. 



Passing over the intervening rocks of the Karroo System, in 

 respect of which it would be difficult, for several reasons, to submit 

 any analyses of typical soils at the present stage, we have next to 

 glance briefly at the upper series of this System, namely, the Storm- 

 berg series, which we may group with the Burghersdorp, or upper- 

 most beds, of the Beaufort series just below them. These consist of 

 sandstones, shales, and clays, interspersed with calcareous rocks, 

 and producing soils of a red or purplish colour. I do not think that 

 we can assign any of these soils that have hitherto been analysed as 

 definitely to certain geological series as in the case of the older rocks, 

 partly because many of the samples were not officially collected. At 

 the same time a selection has been made of soils taken from localities 

 where the influence of the Stormberg and Burghersdorp beds was 

 most likely to have been traced in their composition ; they are 

 comprised in the following table : — 



XII. BURGHERSDOKP BEDS AND STORMBERG SERIES. 



Serial 



No. 



Division. 



Farm. 



Fine 

 Earth. 



W^ater. 



Organic y 

 Matter. ^ 



ime. Po 



tash. 



Phos- 

 phoric 

 Oxide. 



147 



Albert 



Odendalstroom 



94-6 



2-44 



3 71 



540 



048 



•138 



148 





Aliwal North... 



95-2 

 99 5 



210 

 3-23 



2-68 

 3-66 



424 

 376 



051 

 079 



■089 



149 



Aliwal Nortii 



•088 



150 







99-4 



407 



4-32 



276 



123 



•087 



151 



\\ 



!') '.'. ••• 



980 



3-61 



417 



192 



128 



•057 



152 







97 7j 



5-08 



4-73 



036 



123 



•056 



153 



Colesberg ... 



Oorlogspoort... 



911 



2-49 



3-73 



046 



156 



•068 



154 



, 



,, 



92-7 



2-67 



3-69 



094 



165 



•072 



155 







93-8 



2-94 



3-84 



114 



183 



•070 



156 



," !.! 



!'. ••• 



97-6 



4-40 



6 51 



506 



203 



•115 



157 







981 



233 



3-84 



066 



184 



•073 



158 



',! ■•• 



", ... 



94-7 



3-51 



3-81 



216 



136 



•069 



159 



Queenstown 



De Boulogne ... 



99-5 



694 



6-36 



232 



341 



•074 



160 





„ 



98-3 



1008 



10-75 



852 



237 



•069 



161 



II 





92-4 



594 



605 



346 



235 



•145 



162 



Steynsburg... 



zoutKuii ...'.;■. 



94-8 



619 



3 34 



042 



195 



•031 



163 







92-9 



289 



3-23 



448 



152 



•038 



164 



'' .'. 



',', ...... 



97-8 



5-65 



481 



062 



181 



■089 



165 



... 





975 



4-28 



4-25 



062 



213 



•121 



166 





" 



911 



4 00 



4-26 



044 



189 



•097 



167 



W ■■■ 





980 



5 58 



509 



066 



257 



•093 



168 



\\ ■■• 



Klerk' s Kraai!!'. 



98-4 



4-33 



4 09 



238 



196 



■013 



169 



!', ■■■ 



Middel Water 



98-8 



427 



3-79 



130 



192 



•037 



170 





Van Vuuren's 



















Kraal 



980 



3-99 



3-99 



188 



161 



•080 



