The accompanying note has been prepared as a result of the published papers on “mountain-building” in the Bulletin of this Society for 1923, and it may be considered as a natural continuation of the discussions in that symposium. Much assistance also has been derived from a consideration of the recent papers by R. A. Daly,2 H. A. Brouwer,3 F. B. Taylor,4 W. Bowie,5 and W. D. Lambert.6
To all the authors of the various contributions to the Bulletin mentioned above and to the other authors mentioned individually the writer desires to express his great indebtedness.
The hypothesis of mountain-building outlined herewith was foreshadowed in the contribution by the writer to the symposium under consideration. The ideas presented herein do not suggest that the other methods of approach to the subject of mountain-building are incorrect. It simply presents the case from a new viewpoint, and its possible merit lies in . . .