This is a reproduction of a book published before 1923. This book may have occasional imperfectionssuch as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed worksworldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.++++The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Geology And Ore Deposits Of The San Francisco And Adjacent District, Utah, Issues 79-80; Issue 80 Of Professional Paper; Volume 80 Of Geological Survey Professional Paper; Geology And Ore Deposits Of The San Francisco And Adjacent District, Utah; Bert Sylvenus Butler; Issue 80 Of Geological Survey Professional Paper - United States Geological Survey; Geological Survey (U.S.). Bert Sylvenus Butler U.S. Gov’t. Print. Off., 1913 Science; Earth Sciences; Geology; Geology; Mines and mineral resources; Science / Earth Sciences / Geology; Technology & Engineering / Mining