This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...(7) Topographic Atlas of United States--folios and separate sheets thereof, (8) Geologic Atlas of United States--folios thereof. The classes numlered 2, 7, and X are sold at cost of publication; the others are distributed free. A circular giving complete lists can be had on application. Most of the alxive publications can be obtained or consulted in the following ways: 1. A limited nmnler 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 numler are delivered to Senators and Representatives in Congress for distribution. 3. Other copies are deposited with the Superintendent of Documents, Washington, D. ('., from whom they can te had at prices slightly alxve 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 Pa-?rs, liulletins, and Water-Supply Papers treat of a variety of subjects, and the total number issued is large. They have therefore been classilied 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; H, Forestry; I, Irrigation; J, Water storage; K, Pumping water; L, Quality of water; M, General hydrographic investigations; X, Water power; 0, Underground waters; P, Hydrographic progress reports; Q, Fuels; K, Structural materials. This paper is the twenty-first in Series L, the twenty-third in Series M, and the thirteenth in Series N, the complete lists of which follow (WS=Water-Supply Paper): SERIES L, QUALITY OF WATER.' WS 3....