“Some Magnetometric and Gravimetric Surveys in the Transvaal.” By O. Weiss, D. T. Simpson, and G. L. Paver, Department of Mines of the Union of South Africa, Geological Series Bull. No. 7, 1936, pp. 27, plates 8.

This short but interesting report covers test application of the magnetic and gravitational methods of prospecting to geologic problems in seven areas in South Africa.