Page:The Journal of geology (IA journalofgeology11893univers).pdf/206

This page has been proofread, but needs to be validated.
632
THE JOURNAL OF GEOLOGY.

land; Wave-like Progress of an Epeirogenic Uplift, by Warren Upham, Geological Survey of Minnesota; Zur Nereiten Frage, by Dr. H. B. Geinitz, Dresden; Genetic Classification of Geology, by W J McGee, Bureau of Ethnology; The Extent and Lapse of Time Represented by Unconformities, by Professor C. R. Van Hise, U. S. Geological Survey; Restoration of Clidastes (illustrated), by Professor S. W. Williston, University of Kansas; Glacial Succession in the British Isles and Northern Europe, by Dr. James Geikie, Geological Survey of Scotland; Glacial Succession in Sweden, by Hjalmar Lundbohm, Geological Survey of Sweden; Glacial Succession in Switzerland, by Dr. Albrecht Heim, Zurich; Glacial Succession in Norway, by Dr. Andr M. Hansen, Geological Survey of Norway; The Succession of the Glacial Deposits of Canada, by Dr. Robert Bell, Canadian Geological Survey; Glacial Succession in the United States, by Dr. T. C. Chamberlin, University of Chicago; Pleistocene Climatic Changes, by Warren Upham, Geological Survey of Minnesota; Evidences of the Diversity of the Older Drift in North-western Illinois, by Frank Leverett, U. S. Geological Survey. A paper on the General Geology of Venezuela, by Dr. Adolph Ernst, was omitted on account of the illness of its author; and two papers by Dr. O. A. Derby, entitled, On the General Geology of Brazil, and On the Eruptive Phenomena of Brazil, were omitted because their author did not arrive until after the session. Four other papers announced were not read.

The latter part of the first session was devoted to a general discussion of the question, Are there any Natural Geological Divisions of World-wide Extent? The latter part of the second session was devoted to the question, What are the Principles and Criteria to be observed in the Restoration of Ancient Geographic Outlines? The general question assigned for the third discussion, What are the Principles and Criteria to be observed in the Correlation of Glacial Formations in Opposite Hemispheres? was omitted to give time for the discussion of the preceding glacial papers.

Several of the papers read will appear in this Journal, and some of the matters touched upon in the discussions may be the

This article is issued from Wikisource. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.