CONTENTS 



Page. 



Letter of Transmittai, V 



Preface vn 



Abstract of Monograph.. ..'. 1 



Chapter I. — Introductory. 



The field of study 6 



The Great Basin 7 



Explorations 15 



vJhapter II.— Genesis of Lake Lahontau. 



The formatiou of lacustral basins 23 



Origin of the Lahontan liasin 24 



Geographical extent of Lake Lahontan 28 



The hydrographic basin 28 



The lake basin 31 



Quetition of ontlet 32 



Chapter III.— Physiography of the Lahontan Basin. 



Valleys 36 



Mountains 38 



Rivers 40 



The Hnmboldt 40 



Quinn River 41 



TheTruckee 42 



The Carson 43 



The Walker 45 



Springs 47 



Extinct springs 54 



Lakes 55 



Honey Lake, California 55 



Pyramid Lake, Nevada 56 



Winnemucca Lake, Nevada 63 



Humboldt Lake, Nevada 66 



North Carson Lake, Nevada 68 



South Carson Lake, Nevada 68 



Walker Lake, Nevada 69 



Tahoe Lake, Nevada and California • 71 



Soda Lakes near Eagtown, Nevada 73 



Playa-lakes and playas 81 



IX 



