PUBLICATIONS CATALOGUED AND INDEXED HEREIN. 
Annual Keports: 
Twenty-second, four parts. 
Twenty-third. 
Monographs: 
Nos. XLI to XLV. 
Professional Papers: 
Nos. 1 to 13. 
Bulletins: 
Nos. 177 to 214. 
Water-Supply and Irrigation Papers: 
Nos. 46 to 80. 
Mineral Resources: 
For calendar year 1900. 
For calendar year 1901. 
Geologic Atlas op United States: 
Folios Nos. 71 to 90. 
Topographic Maps: 
About 180 atlas sheets and other separate maps. 
Miscellaneous Publications: 
Six. 
