CLASSIFICATION OF THE PUBLICATIONS OF THE UNITED STATES GEOLOGICAL 
SURVEY. 
[Bulletin No. 293.] 
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 the United States — 
folios thereof. The classes numbered 2, 7, and 8 are sold at cost of publication ; the 
others are distributed free. A circular giving complete lists maybe had on 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. A certain number are delivered to Senators and Representatives in Congress 
for distribution. 
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 con- 
sulted 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 stor- 
age; K, Pumping watei; L, Quality of water; M, General hydrographic investiga- 
tions; N, Water power; O, Underground waters; P, Hydrographic progress reports. 
This paper is the eightieth in Series A and the ninety-ninth in Series B, the complete 
lists of which follow (PP= Professional Paper; B=Bulletin; WS = Water-Supply 
Paper): 
SERIES A, ECONOMIC GEOLOGY. 
B 21. Lignites of Great Sioux Reservation: Report on region between Grand and Moreau rivers, 
Dakota, by Bailey Willis. 1885. 16 pp., 5 pis. (Out of stock.) 
B 46. Nature and origin of deposits of phosphate of lime, by R. A. F. Penrose, jr., with introduction 
by N. S. Shaler. 1888. 143 pp. (Out of stock.) 
B 65. Stratigraphy of the bituminous coal field of Pennsylvania, Ohio, and West Virginia, by I. C. 
White. 1891. 212 pp., 11 pis. (Out of stock.) 
B 111. Geology of Big Stone Gap coal field of Virginia and Kentucky, by M. R. Campbell. 1893. 106 
pp., 6 pis. (Out of stock.) 
B 132. The disseminated lead ores of southeastern Missouri, by Arthur Winslow. 1896. 31 pp. (Out 
of stock.) 
B 138. Artesian-well prospects in Atlantic Coastal Plain region, by N. H. Darton. 1896. 228 pp., 19 
pis. 
B 139. Geology of Castle Mountain mining district, Montana, by W. H. Weed and L. V. Pirsson. 1896. 
164 pp., 17 pis. 
B 143. Bibliograph> of clays and the ceramic arts, by J. C. Branner. 1896. Ill pp. 
B 164. Reconnaissance on the Rio Grande coal fields of Texas, by T. W. Vaughan, including a report 
on igneous rocks from the San Carlos coal field, by E. C. E. Lord. 1900. 100 pp., 11 pis. (Out 
of stock.) 
