A^DVERTISEIMENT. 



[Monograph XXV.] 



The publicatinns nf tlio lliiitoil i^tates Geological Survey are issued in accordance with thestatute 

 approved Miirdi 'A. 1S7:I, « In. li ilcrlMics that— 



"The |iiilihc;itiiiiis 111 the li.'dlnnical Survey shall consist of the antiual report of operations, geo- 

 logical and t'i'ouoiiiic maps ilhislratiiii; the resources and classiftcatiou of the lauds, and reports iipou 

 general and economic gcoliijiy and iialeoiitohigy. The annual report of operations of the (icdlnuiial 

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

 reports of said Survey shall he issued in uniform quarto series if deemed necessary by the Hini tin, hut 

 otherwise in ordinary octavos. Three thousand copies of each shall he puhlished forselentilir r\. haiiiies 

 and for sale at the price of publication ; and all literary and cartographic materials rei^eivi-d in exi hange 

 shall be the property of the United States and form a part of the library of the organization : And tiie 

 money resulting from the sale of such i)ublicatious shall be covered into the Treasury of the United 

 States." 



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

 Jtily 7, 1882: 



"That whenever any document or report shall be ordered printed by Congress, tliere shall be 

 printed, in addition to the nnnibin- in each case stated, the ' usual ntimber ' (1,900) of <'opies for binding 

 and distribntion aniniiL; tlMi-.i' iiiiitled to receive them." 



Except ill those r:i so III « liiiii au extra number of any publication has been supplied to the Sur- 

 vey by s)>feial resulni mn <<l' ( 'oii;;i'ess or has been ordered by the Secretary of the Interior, this office 

 has no cojiies for gratuitous tlistribution. 



ANNUAL REPORTS. 



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

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



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

 . 8-^. Iv, 588 pp. til' pi. 1 map. 



III. Third Auuual Report of the United States Geological Survey, 1881-'82, by .T. \V, Powell. 



883. 8". xviii, 564 pp. ()7 pi. and maps. 



IV. Fourth Annual Reijort of the United States Geological Survey, I88l'-'8S. by ,T. \V. Powell. 



884. 8'^. xxxii, 473 pp. 85 pi. and maps. 



V. Fifth Aunual Report of the United .States Geological Survey, 1883-'84, l)y .T. \V. Powell. 



885. 8^. xxxvi, 469 pp. 58 pi. and maps. 



VI. Sixth Annual Report of the United States Geological Survey, 1884-'85, by .7. \V. Powell. 

 . 8*^. xxix, 570 pp. 65 pi. aiul maps. 



VII. Seventh Annual Report of the United .States Geological Survey, 1885-'86, by .1. W. Powell. 

 . S^. XX, 656 pj). 71 pi. and maps. 



VIII. Eighth Annual Report of the United States Geological Survey, 1886-'87, by ,T. W. Powell. 

 . 8". 2 V. xix, 474, xii pp. 53 pi. and maps ; 1 p. 1. 475-1063 pp. 54-76 pi. and maps. 



IX. Ninth Annual Re))ort of the United States Geological Survey, 1887-'88, by .1. W. Powell. 

 . 8"^'. xiii, 717 pp. 88 pi. and maps. 



X. Tenth Annual Report of the United States Geological Survey, 1888-'89, by ,J. W. Powell. 

 . 8^. 2 V. XV, 774 pp. 98 pi. and maps; viii, 123 pp. 



■ XI. Eleventh Annual Report of the United States Geolo-i.al Survey, 1S89-'!I0, by ,J, W. Powell. 

 891. 8^. 2 V. XV, 757])i>. CC, pi. and maps; ix, 351 pp. 30 |il. ami iii:i|is, 



XII. Twelfth Aiuiual Rcjiort of the United States Geolo.-ual .^luxey. 1K90-'!I1, by J. \V. Powell. 

 891. 8^'. 2 V. xiii. 675 pp. 53 pi. and m.aps; xviii, 576 pp. 14h )il. and maps. 



XIII. Thirteenth Annual Report of the United States Geological Survey, 1891-'92, by J. W. 

 Powell. 1893. 8". 3 v. 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 v. 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. 



