J^DVEHTISElSliENT. 



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, geo- 

 logical and economic maps illustrating the resources and classifications 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 

 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 exchauge 

 shall be the property of the United States and form a' part of the libraiy of the organization: Aud the 

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

 States. 



ANNUAL REPORTS. 



From the above it will be seen that only the Annual Reports, which form parts of the reports of 

 the Secretary of the Interior and are printed as executive documents, are available for gratuitous dis- 

 tribution. A number of these are furnished the Survey for its exchange list, but the bulk of them arc 

 supplied directly, through the document rooms of Congress, to members of the Senate and House. 

 Except, therefore, in those cases in which an extra number is supplied to this office by special resolution, 

 application must be made to members of Congress for the Annual Reports, as for all other executive 

 documents. 



Of these Annuals there have been already published : 



I. First Annual Report to the Hon. Carl Schurz, by Clarence King, 8°, Washington, 1880, 79 pp , 

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



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

 8°, Washington, 1-82, Iv., ^>88 pp., 61 pl.ates, 1 map. 



CONTESTS. 



Report of the Director, pp. i-lv., plates 1-7. 



Administrative Reports by Heads of Divisions, pp. 1-46, plates 8 and 9. 



The Physical Geology of the Grand Canon District, by Capt. C. E. Dutton, pp. 47-166, plates 10-36 



Contribution to the History of Lake Bonneville, by G. K. Gilbert, pp. 167-200, plates 37-43. 



Abstract of Report on the Geology and Mining Industry of Leadville, Colorado, by S. F. Emmons, 



pp. 201-290, plates 44 and 4.^;. 

 A Summary of the Geology of the Comstock Lode and the Washoe District, by George F. Becker, 



pp. 291-330, plates 46 and 47. 

 Production of Precious Metals in the United States, by Clarence King, pp. 331-401, plates 48-53. 

 A New Method of Measuring Heights by means of the Barometer, by G. K. Gilbert, pp. 403-56.''>, 



plates 54-61. 

 Index, pp. 567-588. 



The Third and Fourth Annual Reports are now in press. 

 MONOGRAPHS. 



The Monographs of the Survey are i^riuted for the Survey alone, .and can be distributed by it only 

 through a fair exchange for books needed in its library, or through the sale of those copies over aud 

 above the number needed for such exchange. They are not for gratuitous distribution. 



So far as already determined upon, the list of these monographs is as follows: 



I. The Precious Metals, by Clarence King. In preparation. 



II. Tertiary History of the Grand Caiion District, with atlas, by Capt. C. E. Dutton. Publisheil. 



III. Geology of the Comstock Lode and Washoe District, with atlas, by George F. Becker. 



