The conglomerates consist almost entirely of pebbles of quartz set in a hard 2 At the Standerton gauge on the Vaal in 1905-1906, a year of extreme drought, the total flow was 8,017,000,000 cub.
The Karroo System attains its chief development in the southeastern Transvaal in the districts of Ermelo, Standerton and Wakkerstroom.
M.; Standerton, 1959 sq.
In 1904 Bloemhof was officially included in Wolmaransstad; Bethel in Standerton; Piet Retief in Wakkerstroom, and Carolina in Ermelo.
The chief method employed for their destruction is spraying the swarms with arsenic. The districts with the greatest area under cultivation are Heidelberg, Witwatersrand, Pretoria, Standerton and Krugersdorp. The chief crops grown for grain are wheat, maize (mealie) and kaffir corn, but the harvest is inadequate to meet local demands.