ADVERTISEMENT. XI 



Mineral Resources of the United States, 1891, by David T. Day. 1893. 8°. vii, 630 pp. Price 

 50-oeuts. 



Mineral Resources of the United States, 1892, by David T. Day. 1893. 8°. vii, 850 pp. Price 

 50 cents. 



Mineral Resources of the United States, 1893, by David T. Day. 1894. 8^. viii, 810 jjp. Price 

 50 cents. 



On March 2, 1895, the following provision was included in an act of Congress: 



"Provided, That hereafter the report of the mineral resources of the United States shall be 

 issued as a part of the report of the Director of the Geological Survey." 



In compliance with this legislation the following reports have been published: 



Mineral Resources of the United States, 1894, David T. Day, Chief of Division. 1895. 8°. xv, 

 646 pp., 23 pi. ; xis, 735 pp., 6 pi. Being Parts III and IV of the Sixteenth Annual Report. 



Mineral Resources of the United States, 1895, David T. Day, Chief of Division. 18S6. 8°. 

 sxiii, 542 pp., 8 pi. and maps; iii, .543-1058 pp., 9-13 pi. Being Part III (in 2 vols.) of the Seventeenth 

 Annual Report. 



Mineral Resources of the United States, 1896, David T. Day, Chief of Division. 1897. 8°. 

 xii, 642 pp.. 1 pi. ; 643-1400 pp. Being Part V (in 2 vols.) of the Nineteenth Annual Report. 



Mineral Resources of the United States, 1897, David T. Day, Chief of Division. 1898. 8°. 

 viii, 651 pp., 11 pi. ; viii, 706 pp. Being Part VI (in 2 vols.) of the Nineteenth Annual Report. 



Mineral Resources of the United States, 1898, David T. Day, Chief of Division. 1899. 8°. 

 viii, 616 pp. ; ix, 804 pp., 1 pi. Being Part VI (in 2 vols.) of the Twentieth Annual Report. 



The money received from the sale of the Survey publications is deposited in the Treasury, and 

 the Secretary of that Department declines to receive bank checks, drafts, or postage stamps : all remit- 

 tances, therefore, must be by money order, made payable to the Director of the United States 

 Geological Survey, or in currency — the exact amount. Corresi^ondence relating to the publications 

 of the Survey should be addressed to 



The Director, 



United States Geological Survey, 

 Washington, D. C, August, 1900. Washington, D. C. 



