thickness, is said to extend for 18 miles, and to be workable down to 1000 feet, and to contain a gold contents of £25,000,000 sterling. The northern reef is estimated to be capable of producing £20,000,000 of gold. Development waits, in all these auriferous regions, primarily on the provision of railway facilities to get up machinery and mining requisites; and the extension of the Pietersburg line, which has been promised, or the completion of the long-projected Selati railway from where it left off, would be as the breath of life to the mining industry here. Two other promising mining fields, generally separately grouped but really a portion of the De Kaap system, are the Komati or Steynsdorp and the Swazieland gold-fields. The former exists on the Swazieland border, not far from Barberton, and is rightly regarded as merely an outlier of the mineral formations of that district. The numerous reefs have, however, only yielded as yet low-grade and refractory ores. The Swazieland fields have only been prospected in the north-west of that territory, but the results have shown that a considerable body of ore exists. Its gold output in 1898 totalled 8256 oz. Minor fields are those of Malmani, on the western border near Mafeking, the Pretoria quartz reefs, and the banket beds of Vryheid (the last now incorporated into Natal). The prospects of all these fields are very large, and their requirements are alike. Conditions tending to lessen the cost of working, and facilities to induce the advent of the prospector and to justify the investment of capital, will reverse in their cases the dubious records of the past, while adding immensely to the wealth of the Transvaal's gold production resources. [Illustration: PRITCHARD STREET, JOHANNESBURG Photo by Horace W. Nicholls, Johannesburg] [Illustration: MAP SHEWING THE RELATIVE POSITIONS OF THE TRANSVAAL GOLD FIELDS. _From "South Africa," by permission._]