Produced by David Edwards, Joanna Johnston and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Wisconsin Geological and Natural History Survey. E. A. BIRGE, Director. C. R. VAN HISE, Consulting Geologist. BULLETIN NO. V. EDUCATIONAL SERIES NO. 1. THE GEOGRAPHY OF THE REGION ABOUT DEVIL'S LAKE AND THE DALLES OF THE WISCONSIN, With Some Notes on Its Surface Geology. BY ROLLIN D. SALISBURY, A. M., _Professor of Geographic Geology, University of Chicago,_ AND WALLACE W. ATWOOD, B. S., _Assistant in Geology, University of Chicago._ MADISON, WIS. Published by the State. 1900. Wisconsin Geological and Natural History Survey. ------------------------------------------------------------------- BOARD OF COMMISSIONERS. EDWARD SCOFIELD, Governor of the State. L. D. HARVEY, State Superintendent of Public Instruction. CHARLES K. ADAMS, President, President of the University of Wisconsin. EDWIN E. BRYANT, Vice-President, President of the Commissioners of Fisheries. CHARLES S. SLICHTER, Secretary, President of the Wisconsin Academy of Sciences, Arts, and Letters. -------------------------------------------------------------- E. A. BIRGE, Director of the Survey. C. R. VAN HISE, Consulting Geologist. E. R. BUCKLEY, Assistant Geologist. In charge of Economic Geology. S. WEIDMAN, Assistant Geologist. In charge of Geology of Wausau District. L. S. SMITH, in charge of Hydrography. S. V. PEPPEL, Chemist. F. R. DENNISTON, Artist. [Illustration: THE DALLES OF THE WISCONSIN.] CONTENTS. --------------------------------------------------------- PART I. THE TOPOGRAPHY WITH SOME NOTES ON THE SURFACE GEOLOGY. CHAPTER I. GENERAL GEOGRAPHIC FEATURES I. The Plain Surrounding the Quartzite Ridges. Topography Structure Origin of the Sandstone and Limestone Origin of the Topography II. The Quartzite Ridges Topography The Structure and Constitution of the Ridges III. Relations of the Sandstone of the Plain to the Quartzite of the Ridges PART II. HISTORY OF THE TOPOGRAPHY. CHAPTER II. OUTLINE OF THE HISTORY OF THE ROCK FORMATIONS WHICH SHOW THEMSELVES AT THE SURFACE. I. The Pre-Cambrian History of the Quartzite