210 



Analytical figures, interpretation of, 17. 

 Antonies Berg, F.C., 138. 

 Anysberg, 74. 



Aqua Regia as a plant food solvent, 12. 

 Arkansas soil survey, 11. 

 Atriplex, 26, 83. 

 Attaquas Kloof, 96 

 Augea capensis, 97. 



Availability of plant food, 2, 3, 7, 8, 9, 10, 12, 153, 159, 172, 188. 

 Available phosphoric oxide, 2, 156. 

 Avoca, Bredasdorp Division, 28, 30. 

 Avontuur, Caledon Division, 33, 34. 

 Uniondale Division, 138. 



Bacteria, 1, 23. 



Balfour, 128. 



Barkly West Division, 20, 21, 25, 142, 162, 163. 



Barrenness produced by causes other than lack of plant food, 18 (n), 42, 61, 73, 102, 



103, 111, 188, 192. 

 Barren patches, 102, 124. 

 Bathurst Division, 24, 167. 

 Beaufort geological series, 89, 121, 168. 

 Beaufort West Division, 20, 21, 28. 

 Before Attaquas Kloof, 90. 

 Bidouw, 51. 



Black brack (sodium carbonate), 173, 179, 182, 184. 

 Blauwberg, F. C., 39. 

 Blauw pot clay, 102. 

 Bloemfontein, F. C., 28, 32. 



Blown sands, 30, 35, 45, 68, 93, 95, 108, 112, 125, 170, 171. 

 Bokkeveld and Table Mountain series soils compared, 165. 



geological series, 24, 29, 112, 115, 139, 140, 145, 149,*157, 166. 



,, ,, felspathic nature of basement beds of,^166. 



soils, chemical analyses of, 165, 166, 171. 



,, ,, derived from line of junction with Table Mountain series, 165, 16tt. 



proportions of fine earth in, 196. 



satisfactorily provided with plant food, 165. 



Bone manure, 4. 

 Bontebok Vlakte, 47, 50. 

 Bot and Palmiet Rivers, F.C., 33, 36. 

 Bot River, 35. 

 Boussingault, 11. 

 Brack : see " Alkaline." 

 Brak River, Mossel Bay Division, 90. 



Steynsburg Division, 126, 127. 



Bredasdorp Division, 4, 19, 20, 21, 28, 38, 120, 139, 154, 164. 

 Breede River, 115, 129, 131, 134. 

 Britstown Division, 109, 177. 

 "Broken" soil, 92, 93, 116, 117, 131, 132. 

 Buchuberg irrigation works, 108. 

 Buffelsfontein, 74. 

 Buffels Klip, 138, 140. 

 Buff els Kraal, 111. 

 Buffels River, 171. 



Burghersdorp beds, 24, 25, 53, 121, 168, 171. 

 Butterworth District, 19, 21, 32. 



Calcareous tufa, 28. 



Caledon Division, 4, 19, 20, 21, 29, 33, 112, 113, 139, 154, 164, 



Caledon, F.C., 33. 



California, alkaline soils of, 174, 179, 182, 187. 



Cameron, F. K., 3. 



Campbell Rand, 141, 143, 144, 162, 163. 



series soils, analyses of, 162, 171. 



Cango, 77, 96, 99. 



beds, 161. 



fertility of, 77. 



Cape Division, 4, 19, 20, 21, 38-45, 80, 123, 125, 134, 155, 157, 158. 

 Cape Flats, 42, 125. 



