CLASSIFICATION OF THE PUBLICATIONS OF THE UNITED STATES GEOLOGICAL 
SURVEY. 
[Bulletin No. 339.] 
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 can be had on application. 
Most of the above publications can be obtained or consulted in the following ways: 
1. A limited number are delivered to the Director of the Survey, from whom they 
can 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 can 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 can 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 stor- 
age; K, Pumping water; L, Quality of water; M, General hydrographic investiga- 
tions; N, Water power; O, Underground waters; P, Hydrographic progress reports, 
Q, Fuels; R, Structural materials. This paper is the tenth in Series Q, the com- 
plete list of which follows (PP= Professional Paper; B— Bulletin): 
SERIES Q, FUELS. 
B 261. Preliminary report of the operations of the coal-testing plant of the United States Geological 
Survey at the Louisiana Purchase Exposition, St. Louis, Mo., 1904; E. W. Parker, J. A.Holmes, 
M. R. Campbell, committee in charge. 1905. 172 pp. 
PP 48. Report on the operations of the coal-testing plant of the United States Geological Survey at the 
Louisiana Purchase Exposition, St. Louis, Mo., 1904; E. W. Parker, J. A. Holmes, M. R. Camp- 
bell, committee in charge. 1906. 3 parts. 1,492 pp., 13 pis. 
B 290. Preliminary report on the operations of the fuel-testing plant of the United States Geological 
Survey at St. Louis, Mo., 1905, by J. A. Holmes. 1906. 240 pp. 
B 323. Experimental work conducted in the chemical laboratory of the United States fuel-testing 
plant at St. Louis, Mo., January 1, 1905, to July 31, 1906, by N. W. Lord. 1907. 49 pp. 
B 325. A study of four hundred steaming tests made at the fuel-testing plant, St. Louis, Mo., in 1904, 
1905, and 1906, by L. P. Breckenridge. 1907. 196 pp. 
B 332. Report of the United States fuel-testing plant at St. Louis, Mo., January 1, 1906, to July 1, 1907, 
Joseph A. Holmes in charge. 1908. pp. 
B 333. Coal-mine accidents: their causes and prevention; a preliminary statistical report, by 
Clarence Hall and W. O. Snelling, with an introduction by J. A. Holmes. 1907. 21 pp. 
B. 334. The burning of coal without smoke in boiler plants, a preliminary report, by D. T. Randall. 
1908. 26 pp. 
B 336. Washing and coking tests of coal and cupola tests of coke, by Richard Moldenke, A. \Y. 
Belden, and G. R. Delamater. 1908. pp. 
B 339. The purchase of coal under Government and commercial specifications, on the basis of its 
heating value, by D. T. Randall. 1908. 27 pp. 
Correspondence should be addressed to 
The Director, 
United States Geological Survey, 
Washington, D. C. 
January, 1908 
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