The largest town in the Transvaal, 30 m. S. of Pretoria, and 800 m. NE. of Cape Town; is the centre of Witwatersrand gold-mining fields. Until recently an ill-equipped town, it has made rapid progress. Since 1892 railways connect it with Delagoa Bay, Durban, Port Elizabeth, and Cape Town. Magnificent buildings and residential suburbs are springing up. The water-supply is bad, and dust-storms are frequent, otherwise the climate is very healthy. Johannesburg was the seat of the dissatisfaction among the Uitlanders in 1895, which led to Dr. Jameson's raid.