ADVERTISEMENT. 



[Monograpli XV.] 



Tbe publications of the United States Geological Survey are issued in accordance witli the statute 

 approved March 3, 1879, which declares that— 



"The publications of the Geological Survey shall consist of the annual report of operations, geo- 

 logical 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 iu uniform quarto series if deemed necessary by the Director, but 

 otherwise iu ordinary octavos. TUree thousand copies of each shall be published for scientitic exchanges 

 and for s.ale at the price of publication ; and all literary and cartographic materials received iu 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 



On July 7, 188-.J, the following joint resolution, referring to all Government publications, was 



passed by Congress: , „ , , , ■ ^ , , ^ »i i n i 



"That w-heiiever any documeut 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." ■ , x ^i o 



Except in those cases iu which an extra number of any publication has been supplied to tlie Pur- 

 vey 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. 



I. First Annual Report of the United States Geological Survey, by Clarence King. 1880. 8*^. 79 

 pp. 1 map.— A preliminary report describing plan of organization and publications. 



II. Second Annual Report of the United States Geological Survey, 1880-'81, by J. W. Powell. 

 S^'. Iv, 588 pp. 61 pi. 1 map. t „t t^ ,i 



III. Third Annual Report of the United States Geological Survey, 1881-'82, by J. V, . Powell. 

 8^. xviii, 5(54 pp. (57 pi. and maps. ,, ,^. , t ,,r t. t, 



IV. Fourth Annual Report of the United States Geological Survey, 1882-'83, by J. \\ . 1 owell. 

 8°. xxxii, 473 pp. 85 pi. and maps. „„„ ,^. , , ,,r n n 



V. Fifth Annual Report of the United States Geological Survey, 1833- 84, by J. W . Powell. 

 8°. xxxvi, 469 pp. .58 pi. and maps. t „r t, n 



VI. Sixth Annual Report of the United States Geological Survey, 1884-'8o, by J. W. Powell. 

 8°. xxix, .570 pp. 65 pi. and maps. t •■,, ,i 



VII. Seventh Annual Report of the United States Geological Survey, 188o-'86, by J. W. Powell. 

 8°. XX, 656 pp. 72 pi. and maps. 



The Eighth and Ninth Annual Reports are in press. 



MONOGRAPHS. 



Monograph I is not yet published. ^ t^ ,, ri . tt o a 



II. Tertiary History of the Grand Canon District, with atlas, by Clarence E. Duttou, Capt., U. b. A. 

 1883 4'^. xiv, 264 pp. 42 pi. .and atlas of 24 sheets folio. Price $10.12. 



III. Geology of the Comstoek Lode and the Washoe District, with atlas, by George !•. Becker. 

 1882 4*^. XV, 42i; pp. 7 pi. and atlas of 21 sheets folio. Price 3ilL 



IV. Comstock Mining and Miners, by Eliot Lord. 1883. 4". xiv, 451 pp. 3 pi. Price |l.oX). 



V. The Copper-Bearing Rocks of Lake Superior, by Roland Duer Irving. 1883. 4°. xvi,464pp. 

 15 1. 29 pi. and mans. Price .$1.85. . . . 



VI. Contributions to the Knowledge of the Older Mesozoic Flora of Virginia, by William Moms 

 Fontaine. 1883. 4^^. xi, 144 pp. 54 1. 54 pi. Price $1.05. 



VII. Silver-Lead Deposits of Eureka, Nevada, by Joseph Story Curtis. 1884. 4°. xiii, 200 pp. 



^ ' VIlV. Paleontology of the Eureka District, by Charles Doolittle Walcott. 1884. 4°. xiii, 298 pp. 

 24 1. 24 pi. Price $1.10. 



