472 Transactions of the South African Philosophical Society. 



quartzites lie upon granite ; the northern and southern Black 

 Reefs join here as well as the two dolomites. Hospital Hill 

 slates occur south of Modderfontein ; at Kaalfontein ; Bankets 

 are found in the same position relatively to the slates as the 

 Bird Reef series near Johannesburg ; at Witrandfontein the 

 reef can be referred in the same way to the Kimberley series. 

 Two lines of slates occur between Kaalfontein and Witpoortje, 

 due to faulting. The conglomerates are folded. 



Brown, Nicol. " The Succession of the Bocks in the Pilgrim's 

 Rest District." Trans. Geol. Soc. South Africa, vol. hi., 1897, 

 pp. 3, 4, with section of strata at Frankfort. 



Three rock divisions in the district : the Upper Sandstone, the 

 Dolomitic Limestone, and the Lower Sandstone, equivalent to 

 the Gatsrand, Dolomite, and Conglomerate series of the Rand. 



Frames, M. E. " Notes on the Coalfields of the Transvaal." 

 Trans. Geol. Soc. South Africa, vol. hi., 1897, pp. 150-157, with 

 3 sections and discussion at end. 



The author correlates the South African strata with European 

 ones. The coal-beds reach from the Stormberg Mountains to 

 Middelburg in the Transvaal, and eastwards nearly to the Indian 

 Ocean. Outliers exist around this area, and sometimes the sand- 

 stones of this age occur without the coal but with abundant 

 fossils of plants. The coal is laminated, contains more or less 

 pyrites, is very high in ash, and is too soft for coke, though all 

 varieties of coal are found in small patches. The great eastern 

 seam, 70 feet thick, is the biggest. The coal rests on the upturned 

 edges of the Rand beds, with or without an underlying shale 

 bed ; at Vereeniging there is conglomerate beneath the seams. 

 Igneous dykes sometimes intrude. 



Bordeaux, A., Ingenieur civil des Mines. " Etudes sur les champs 

 auriferes de Lydenburg, de Kaap et du Charterland (Afrique du 

 Sud)." Annales des Mines, 9me serie, tome xi., 3e livr. de, 

 1897, pp. 273-349. 



This paper gives the result of observations made on a visit of 

 fourteen months' duration to South Africa, during which the 



