ADVERTISEMENT. 



[Monograph XXIII. 1 



The publications of the United States Geological Survey are issued in accordance with the statute 

 approved March :i, 1*7!), which declares that — 



"The publications of the Geological Survey shall consist of the annual report oi opera; ions, geo- 

 logical and economic maps illustrating the resources and classification of the lands, and reports upon 



general and ec .mic geology and paleontology. The annual report of operations of the Geological 



Survey shall accompany the annual report of the Secretary ol the Interior. All special memoirs and 

 reports of said Survey shall be issued in uniform quarto series if deemed necessary by the Director, but 

 otherwise 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 propert) of the United states and form a part of the library ol the organization : And the 

 money resulting from the sale of such publications shall be covered into the Treasury ol the United 



The following joint resolution, referring to all government publications, was passed by Congress 



" y "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 ' (1.9(1(1) of copies for binding 

 and distribution among those entitled to receive them." 



Except in those eases in which an extra number ol any publication has been supplied to the sui 

 \e\ 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 

 r>p 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 



III. Third Annual Report of the United States Geological Survey, 1881-'82, by .1. W. Powell. 

 1883 8°. xviii, 564 pp. 67 pi. and maps. 



[V. Fourth Annual Report of the United States Geological Survey, 1882-83, by J. VV. Powell. 

 1884. 8°. xxxii. 17o pp. 85 pi. and maps. 



V. Fifth Annual Report of the United Slates Geological Survey. 1883-84, by J. W. Powell. 

 1885 8. xxxvi. Kill pp. 58 pi. and maps. 



VI. Sixth Annual Report of the United states Geological Survey, 1884-85, by J. W. lowed. 



VII. Seventh Annual Reporl of theUnited States Geological Survey, 1885-'86, by J. W. Powell. 



Vi i i ! EighthAnnual P Report of the United States Geological Survey, 1886-'87, by J. W. Powell. 



1889 8 2vf xix,474,xiipp. 53 pi. and maps; 1 p. 1. 175-I063pp. 54-76 pi. and maps. 



IX. Ninth Annual Report of the United States Geological Survey, 1887-'88, by J. W. Powell. 



X. Tenth Annual Report^ the United states tool., goal Survey. 1888-'89, by J. W. Powell. 



1890 8° 2 v. xv, 774 pp. 98 pi. and maps ; viii, 123 pp. 



XI Eleventh Annual Report of the United States Geological Survey, 1889-'90, by J. \\ . Powell. 

 1891. 8°. 2v. xv, 757 pp. 66 pi. and maps ; ix, 351 pp. 30pl. and maps ,»-.. n 



XII. Twelfth Annual Ri port of the United States Geological Survej . 1890-91, by J. w . I owell. 

 1891. 8 C . 2v. xiii,675pp. 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 v. 



