PUBLICATIONS OF UNITED STATES GEOLOGICAL SURVEY. 
[Bulletin No. 271.] 
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 
pn application. 
Most of the above publications may be obtained or consulted in the following 
ways : 
1. A limited number are delivered to the Director of the Survey, from whom they 
may be obtained, free of charge (except classes 2, 7, and 8), on application. 
2. Every Member of Congress is allotted a certain number, from whom they may 
be obtained, free of charge, on application. 
3. Other copies are deposited with the Superintendent of Documents, Washington, 
D. C. , from whom they may be had at practically cost. 
4. Copies of all Government publications are furnished to the principal public 
libraries in the large cities throughout the United States, where they may be 
consulted by those interested. 
The Professional Papers, Bulletins, and Water-Supply Papers treat of a variety of 
subjects, and the total number issued is large. They have therefore been classified 
into the following series: A, Economic geology; B, Descriptive geology; C, System- 
atic geology and paleontology; D, Petrography and mineralogy; E, Chemistry and 
physics; F, Geography; G, Miscellaneous; H, Forestry; I, Irrigation; J, Water 
storage; K, Pumping water; L, Quality of water; M, General hydrographic investi- 
gations; N, Water power; O, Underground waters; P, Hydrographic progress reports. 
This bulletin is the twenty-ninth in Series G, the complete list of which follows (all 
are bulletins thus far): 
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 Horatio 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 
Darton. 1896. 1,045 pp. 
130. Bibliography and index of North American geology, paleontology, petrology, and mineralogy 
for 1892 and 1393, 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. L26 )»p. 
135. Bibliography and index of North American geologv, paleontology, petrology, and mineralogy 
for the year 1894. by Fred Boughton 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. 
