[Book Reviews]

Abstract

THESE ‘handbooks’ are indispensable works of reference for the countries they describe. The first part of the seventh volume deals with the Union of South Africa. The sections by the four main authors are supplemented by contributions by Dr. J. L. Krige, Dr. du Toit, and Prof. Shand. The book, as might be expected from the authors, deals mainly with the work of the Geological Survey, and includes a useful list of its maps and publications. The work is shorter than the volumes by du Toit and Krenkel, and its special value is as an authoritative statement of the present conclusions as to the classification and correlation of South African rocks. It may be noted that the Stormberg Series is all included in the Trias; the system in which the Ecca Series should be included is left indefinite; and the Waterberg System, from which the beds below the unconformity in it are excluded and referred to the Transvaal System, is accepted as pre-Pakæozoic.

Handbuch der regionalen Geologie.

Herausgegeben vonProf. Dr. G. Steinmann Prof. Dr. O. Wilckens. Band 7, Abteilung 7a: The Union of South Africa. By A. W. Rogers, A. L. Hall, P. A. Wagner and S. H. Haughton. Pp. 232 + 3 plates. (Heidelberg: Carl Winters Universitätsbuchhandlung, 1929.) 17 gold marks.