THIRTEENTH ANNUAL REPORT
OF THE
UNITED STATES GEOLOGICAL SURVEY
TO THE
SECRETARY OF THE INTERIOR
1891-'92
BY
J. W. POWELL DIRECTOR
IN THREE PARTS
PART I-REPORT OF THE DIRECTOR
WASHINGTON GOVERNMENT PRINTING OFFICE 1892 THIRTEENTH ANNUAL REPORT
OF THE
DII~ HCCTOH
OF THE
UNITED STATES GEOLOGICAL SURVEY.
Part I.—REPORT OF DIRECTOR.
III CONTENTS.
REPORT OF THE DIRECTOR. Page. Letter of i ransmittal 1 Plan of operations for the fiscal year 1891—'92 3 Topography 4 Supervision, disbursements, etc . 4 Northeastern section 5 Southeastern section 6 Central section California gold-belt section 7 Southern California section 7 Colorado, South Dakota, and Wyoming section 7 Idaho section 7 Montana section 8 Texas section 8 Washington section 8 Special work 8 Miscellaneous office work 8 Geology