PUBLICATIONS OF UNITED STATES GEOLOGICAL SURVEY. 
[Bulletin No. 203.] 
The serial publications of the United States Geological Survey consist of (1) Annual 
Reports, (2) Monographs, (3) Professional Papers, (4) Bulletins, (5) Mineral 
Resources, (6) Water-Supply and Irrigation Papers, (7) Topographic Atlas of 
United States — folios and separate sheets thereof, (8) Geologic Atlas of United 
States — folios thereof. The classes numbered 2, 7, and 8 are sold at cost of publica- 
tion; the others are distributed free. A circular giving complete lists may be had on 
application. 
The Bulletins (which were formerly sold, but a joint resolution approved May 16, 
1902, directed that they should be distributed gratuitously) treat of a variety of sub- 
jects, and the total number issued is large. They have therefore been classified into 
the following series: A, Economic geology; B, Descriptive geology; C, Systematic 
geology and paleontology; D, Petrography and mineralogy; E, Chemistry and 
physics; F, Geography; G, Miscellaneous. This bulletin is the twenty-third in Series 
G, the complete list of which follows: 
BULLETINS, SERIES G, MISCELLANEOUS. 
2. Gold and silver conversion tables, giving the coining values of troy ounces of fine metal, etc., 
computed by Albert Williams, jr. 1883. 8 pp. 
7. Mapoteca geologica Americana: A catalogue of geological maps of America (North and South), 
1752-1881, in geographic and chronologic order, by Jules Marcou and John Belknap Marcou. 1884. 
184 pp. 
25. The present technical condition of the steel industry of the United States, by Phineas Barnes. 
1885. 85 pp. 
26. Copper smelting, by Henry M. Howe. 1885. 107 pp. 
44. Bibliography of North American geology for 1886, by Nelson H. Darton. 1887. 35 pp. 
75. Record of North American geology for 1887-1889, inclusive, by Nelson Horatio Darton. 1891. 
173 pp. 
91. Record of North American geology for 1890, by Nelson Horatio Darton. 1891. 88 pp. 
99. Record of North American geology for 1891, by Nelson Horatio Darton. 1892. 73 pp. 
100. Bibliography and index of the publications of the U. S. Geological Survey, 1879-1892, by Philip 
Creveling Warman. 1893. 495 pp. 
127. Catalogue and index of contributions to North American geology, 1732-1891, by Nelson Horatio 
Dartin. 1896. 1,045 pp. 
130. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for 1892 and 1893, by Fred Boughton Weeks. 1896. 210 pp. 
131. Report of progress of the division of hydrography for the calendar years 1893 and 1894, by 
Frederick Haynes Newell. 1895. 126 pp. 
135. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1894, by F. B. Weeks. 1896. 141 pp. 
140. Report of progress of the division of hydrography for the calendar year 1895, by Frederick 
Haynes Newell. 1896. 356 pp. 
146. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1895, by F. B. Weeks. 1896. 130 pp. 
149. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1896, by Fred Boughton Weeks. 1897. 152 pp. 
156. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1897, by Fred Boughton Weeks. 1898. 130 pp. 
162. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1898, by Fred Boughton Weeks. 1899. 163 pp. 
172. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1809, by Fred Boughton Weeks. 1900. 141 pp. 
177. Catalogue and index of the publications of the United States Geological Survey, 1880-1901, by 
Philip Creveling Warman. 1901. 858 pp. 
188. Bibliography of North American geology, paleontology, petrology, and mineralogy for the 
years 1892-1900, inclusive, by Fred Boughton Weeks. 1902. 717 pp. 
189. Index to North American geoJogy, paleontology, petrology, and mineralogy for the years 
1892-1900, inclusive, by Fred Boughton Weeks. 1902. 337 pp. 
203. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for the year 1901, by Fred Boughton Weeks. 1902. 144 pp. 
Correspondence should be addressed to 
The Director, 
United States Geological Survey, 
Washington, D. C. 
9251— No. 2()3—(>2 10 i 
