ADVERTISEMENT. 
[Bulletin 168.] 
The statute approved March 3, 1879, establishing the United States Geological Survey, contains the 
following provisions : 
' ' 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." 
Except in those cases in which an extra number of any special memoir or report has been supplied 
to the Survey by 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. 1882. 
8°. lv, 588 pp. 62 pi. 1 map. 
in. Third Annual Report of the United States Geological Survey, 1881-'82, by J. W. Powell. 1883. 
8°. XA'iii, 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. 1885. 
8°. xxix, 570 pp. 65 pi. and maps. 
VII. Seventh Annual Report of the United States Geological Survey, 1885-'86, by J. W. Powell. 1888. 
8°. xx, 656 pp. 71 pi. and maps. 
VIII. Eighth Annual Reportof the United States Geological Survey, 1886-'87, by J. W. Powell. 1 889. 
8 C . 2 pt. xix, 474, xii pp. 53 pi. and maps ; 1 p. 1., 475-1063 pp. 54-76 pi. and maps. 
IX. Ninth Annual Report of the United States Geological Survey, 1887-'88, by J. W. Powell. 1889. 
8°. xiii, 717 pp. 88 pi. and maps. 
X. Tenth Annual Reportof the United States Geological Survey, 1888-'89, by J. W. Powell. 1890. 
8°. 2 pt. xv, 774 pp., 98 pi. and maps ; viii, 123 pp. 
XI. Eleventh Annual Reportof the United States Geological Survoy, 1889-'90, by J. W. Powell. 1891. 
8°. 2 pt. xv, 757 pp., 66 pi. and maps; ix, 351 pp., 30 pi. 
XII. Twelfth Annual Report of the United States Geological Survey, 1890-'91. by J. W. Powell. 1891. 
8°. 2 pt. xiii, 675 pp., 53 pi. and maps; xviii, 576 pp., 146 pi. and maps. 
XIII. Thirteenth Annual Report of the United States Geological Survey, 1891-'92, by J. W. Powell. 
1893. 8°. 3 pt. vii, 240 pp., 2 maps; x, 372 pp., 105 pi. and maps; xi, 486 pp., 77 pi. and maps. 
XIV. Fourteenth Annual Report of the United States Geological Survey, 1892-'93, by J.W.Powell. 
1893. 8°. 2 pt. vi, 321 pp., 1 pi. ; xx, 597 pp., 74 pi. 
XV. Fifteenth Annual Report of the United States Geological Survey, 1893-'94, by J. W. Powell. 
1895. 8°. xiv, 755 pp. 48 pi. 
XVI. Sixteenth Annual Report of the United States Geological Survey, 1894-'95, by Charles D. 
Walcott, Director. 1895. (Part 1, 1896.) 8°. 4 pt. xxii, 910 pp., 117 pi. and maps ; xix, 598 pp., 43 pi. and 
maps; xv, 646pp., 23 pi.; xix, 735 pp., 6 pi. 
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