





xu 



TABLE OF CONTENTS. 



Subdivision II. The Eegion South of the Mokelumne Eiver 120-141 



§ 1. The Bed-Eock in Calaveras, Tuolumne, and Mariposa 121-125 



§ 2. Gravel and Volcanic Formations in Calaveras, Tuolumne, and 



Mariposa Counties 125-141 



Subdivision III. The Eegion North of the North Fork of the American Eiver 142- 19G 



163 

 174 



§ 1. Dutch Flat, Gold Run, and Little York 143- 



§ 2. You Bet and Eed Dog 1G4- 



■ 



§ 3. Lowell Hill and Remington Hill 174-177 



§ 4. Quaker Hill and Vicinity 177-181 



§ 5. Grass Valley and Nevada City 181-191 



§ 6. Smartsville and Timbuctoo 191-190 





Subdivision IV. The Eegion North of the South Yuba Eiver 196-218 



§ 1. The Divide between the South and Middle Yuba Eivers 196-207 



§ 2. Cherokee Flat and the Eegion near Oroville 207, 208 



§3. The Eegion North of the Middle Yuba 208-218 







CHAPTER III 



THE FOSSILS OF THE AURIFEROUS GRAVEL SERIES. 



Section I. Introductory Eemarks 219-220 



II. The Infusorial Eocks of the Auriferous Gravel Series 220-231 



III. The Fossil Plants of the Auriferous Gravel Series 231-239 



IV. The Animal Eemains, not Human, of the Gravel Series 239-258 



V. Human Eemains and Works of Art of the Gravel Series 258-288 





. CHAPTER IV. 



RESUME AND THEORETICAL DISCUSSION OF THE PRINCIPAL FACTS CONNECTED WITH 



THE GEOLOGICAL OCCURRENCE OF THE AURIFEROUS GRAVELS. 



Section I. Introductory Eemarks 289-292 



II. What may be assumed as having been clearly established in 



Eegard to the Theory of the Gravel Deposits 292-298 



III. The General Distribution of the Detrital and Volcanic Mate- 



rials on the West Slope of the Sierra Nevada 298-314 



IV. The Geological Age of the Gravels 314-321 



V, LlTHOLOGICAL CHARACTER AND PECULIARITIES OF THE GRAVEL 321-333 



VI. The Bed-Eock Surface and the Channels 333-350 



VII. Source of the Gold and its Distribution in the Gravel 350-3G1 



VIII. Ores and Minerals associated with the Gold 361-3G7 



IX. Economical Considerations connected with the Working of the 



Gravels 3G7-37G 



4 



