Department of Scientific and Industrial Research Memoirs of the Geological Survey Summary of Progress of the Geological Survey of Great Britain and the Museum of Practical Geology for 1921, with Report of the Geological Survey Board and Report of the Director

Abstract

FOR many years past, geologists who wish to keep pace with research in the stratigraphy or petrology of our islands have found that they must not overlook the annual volumes modestly entitled “Summary of Pro gress of the Geological Survey.” The issue for 1921 contains a paper by E. E. L. Dixon on “The Retreat of the Lake District Ice-Cap,” and the formation of fluctuating lakes held up by glacier-dams. The relations of kames and outwash-mounds of various kinds are considered, and the protruded products of sub-glacial melting, where clearly connected with a “feeding esker,” are well styled “esker deltas.” Foreign geologists may be puzzled at the frequent occurrence of the name of Lamplugh in a glacial paper as that of a village at the foot of Owsen Fell. On p. 129, Dr. R. Kidston provides a new example of how the determination of the species of Carboniferous plants enables the “practical man “to determine the horizons of his coal-seams. The lists of species from the beds now shown to be Westphalian in the Durham and Northumberland Coalfield contain some revisions of genera, and several new forms are mentioned. May we suggest that the printing of the titles of such papers on the cover of the “Summary of Progress “would do much to bring the publication into line with the convenient bulletins of the United States Geological Survey?

Department of Scientific and Industrial Research. Memoirs of the Geological Survey. Summary of Progress of the Geological Survey of Great Britain and the Museum of Practical Geology for 1921, with Report of the Geological Survey Board and Report of the Director.

Pp. iv + 189. (Southampton: Ordnance Survey Office; London: E. Stanford, Ltd., 1922.) 5s. net.