TABLE OF CONTENTS. 



Page. 



Title I 



Table of contents V 



List of illustrations XIII 



Letter to the Secretary XVII 



GEOLOGY. 



REPORT OF W. H. HOLMES: 



ON THE GEOLOGY OF THE YELLOWSTONE NATIONAL PARK 1 



Letter of transmittal 1 



Introductory 1 



Narrative 2 



General surface features 4 



The Great Displacement, Yellowstone Valley 5 



Mount Evarts 9 



Sepulchre Mountain 15 



East Gallatin Mountains 19 



Upper Gardiner River 27 



Washburn Range 32 



Grand Caiion 35 



Junction Valley 42 



East Fork and Amethyst Mountain 47 



Glacial phenomena 52 



Yellowstone Lake 55 



Petrographic notes by Capt. C. E. Button 57 



THEEMAL SPEINGS. 



REPORT OF A. C. PEALE, M. D. : 



THE THERMAL SPRINGS OF YELLOWSTONE NATIONAL PARK... 63 



Introductory letter 63 



FA-RT I. 



Descriptive of springs and geysers of Yellowstone National Park.. G5 



Introduction 65 



Section I. Springs on Yellowstone River Draingage 71 



Chap. I. Mammoth or White Mountain Hot Springs of Gardiner's River.. 71 



Table of Mammoth Hot Springs 73 



Description of springs 74 



II. Springs of Yellowstone River below the Grand Falls, including 



the East Fork 84 



Junction Valley Springs 84 



Tower Creek Springs 84 



Springs on East Fork of Yellowstone 85 



Mount Washburn Groups 86 



