ADVERTISEMENT. 
[Bulletin No. 46.] 
The publications of the United States Geological Survey are issued in accordance with the statute 
approved March 3, 1879, which declares that — 
" The publications of the Geological Survey shall consist of the annual report of operations, geological 
and economic maps illustrating the resources and classification of the lands, and reports upon general 
and economic geology and paleontology. The annual report of operations of the Geological Survey 
shall accompany the annual report of the Secretary of the Interior. All special memoirs and reports 
of said Survey shall be issued in uniform quarto series if deemed necessary by the Director, but other- 
wise in ordinary octavos. Three thousand copies of each shall be published for scientific exchanges 
and for sale at the price of publication ; and all literary and cartographic materials received in exchange 
shall be the property of the United States and form a part of the library of the organization : And the 
money resulting from the sale of such publications shall be covered into the Treasury of the United 
States." 
On July 7, 1882, the following joint resolution, referring to all Government publications, was passed 
by Congress : 
' ' That whenever any document or report shall be ordered printed by Congress, there shall be printed, 
in addition to the number in each case stated, the 'usual number' (1,900) of copies for binding and 
distribution among those entitled to receive them." 
Except in those cases in which an extra number of any publication has been supplied to the Survey 
by special resolution of Congress or has been ordered by the Secretary of the Interior, this Office has 
no copies for gratuitous distribution. 
ANNUAL REPORTS. 
Of the Annual Reports there have been already published : 
I. First Annual Report of the United States Geological Survey to the Hon. Carl Schurz, by Clarence 
King. 1880. 8°. 79 pp. 1 map. — A preliminary report describing plan of organization and publica- 
tions. 
II. Second Annual Report of the United States Geological Survey, 1880-'81, by J. W. Powell. 1882. 
8°. lv, 588 pp. 01 pi. 1 map. 
III. Third Annual Report of the United States Geological Survey, 1881-'S2, by J. W. Powell. 1883. 
8°. xviii, 564 pp. 67 pi. and maps. 
IV. Fourth Annual Report of the United States Geological Survey, 1882-'83, by J. W. Powell. 1884. 
8°. xxxii, 473 pp. 85 pi. and maps. 
V. Fifth Annual Report of the United States Geological Survey, 1883-'84, by J. W. Powell. 1885. 
8°. xxxvi, 469 pp. 58 pi. and maps. 
VI. Sixth Annual Report of the United States Geological Survey, 1884-'85, by J. W. Powell. 1886. 
8°. xxix, 570 pp. 65 pi. and maps. 
The Seventh and Eighth Annual Reports are in press. 
MONOGRAPHS. 
Of the Monographs, Nos. II, III, IV, V, VI, VII, VIII, IX, X, XI, and XII are now published, viz: 
II. Tertiary History of the Grand Canon District, with atlas, by Clarence E. Dutton, Capt. U. S. A. 
1882. 4°. xiv, 264 pp. 42 pi. and atlas of 24 sheets folio. Price $10.12. 
III. Geology of the Comstock Lode and the Washoe District, with atlas, by George F. Becker. 
1882. 4°. xv, 422 pp. 7 pi. and atlas of 21 sheets folio. Price $11. 
IV. Comstock Mining and Miners, by Eliot Lord. 1883. 4°. xiv, 451 pp. 3 pi. Priee $1.50. 
V. Copper-Bearing Rocks of Lake Superior, by Roland D. Irving. 1883. 4°. xvi, 464 pp. 15 1. 
29 pi. Price $1.85. 
VI. Contributions to the Knowledge of the Older Mesozoic Flora of Virginia, by Wm. M. Fontaine. 
1883. 40. xi, 144 pp. 541. 54 pi. Price $1.05. 
VII. Silver-Lead Deposits of Eureka, Nevada, by Joseph S. Curtis. 1884. 4°. xiii, 200 pp. 16 pi. 
Price $1.20. 
VIII. Paleontology of the Eureka District, by Charles D. Walcott. 1884. 4°. xiii, 298 pp. 24 1. 
24 pi. Price $1.10. 
