VIII ADVERTISEMENT. 



156. Bibliography and Index of North Aiiiericau Geology, Paleontology, Petrology, ami Mineralogy 

 forthe Tear 1897, by Fred Bough ton Weeks. 1808. 8°. 130 pp. Price 15 eents. 



157. TheGueiases, Gabbro-Schist.i, and Associated Rocks of Southwestern Minnesota, by Christopher 

 Webber Hall. 1899. 8^. 160 pp. 27 pi. Price 45 cents. 



158. The Moraines of Southeastern South Dakota and their Attendant Deposits, by James Edward 

 Todd. 1899. 8^. 171 pp. 27 pi. Price 25 cents. 



159. The Geology of Eastern Berkshire County, Massachusetts, by B. K. Emerson. 1899. 8'^. 139 

 pp. 9 pi. Price 20 cents. 



160. A Dictionary of Altitudes in the United States (Tliird Edition), compiled by Henry Gannett. 

 1899. 8°. 775 pp. Price 40 cents. 



161. Earthquakes in California in 1898, by Charles D. Pcrrine, Assistant Astronomer in Charge of 

 Earthquake Observations at the Lick Observatory. 1899. 8^. 31 pp. 1 pi. Price 5 cents. 



162. I!ibIiography and Index of North American Geology, Paleontology, Petrology, and Mineralogy 

 for the Year 1898, by Fred Boughton Weeks. 1899. 8°. 103 pp. Price 15 cents. 



103. Flora of the Montana Formation, by Frank Hall Knowlto ' 900. 8°. 118 pp. 19 pi. Price 

 15 cents. 



164. Roconnaissanco in the Rio Grande Coal Fields of Texas, by Thomas AVayland Vaughan, includ- 

 ing a Report on Igneous Rocks from the San Carlos Coal Field, by E. C. E. Lord. 1900. 8°. 100 pp. 

 11 pi. and mails. Price 20 cents. 



165. Contributions to tlio Geology of Maine, by Ilonrj' S. Williams and Herbert E. Gregory. 1900. 

 8°. 212 pp. 14 pi. Price 25 cents. 



166. A Gazetteer of Utah, by Henry Gannett. 1900. 8°. 43 pp. 1 map. Price 15 cents. 



167. Contributions to Chemistry and Mineralogy from the Laboratory of the United States Geological 

 Survey, Frank W. Clarke, Chief Chemist. 1900. 8°. 166 pp. Price 15 cents. 



168. Analyses of Rocks, Laboratory of the United States Geological Survey, 1880 to 1899, tabulated 

 by F. W. Clarke, Chief Chemist. 1900. 8°. 308 pp. Price 20 cents. 



169. Altitudes in Alaska, by Henry Gannett. 1900. 8'=". 13 pp. Price 5 cents. 



170. Survey of the Boundary Lino between Idaho and Montana from the International Boundary to 

 the Crest of the I5itteiTOot Mountains, by Richard Urquhart Goode. 1900. 8'^. 67 pp. 14 pi. Price 

 15 cents. 



171. Boundaries of the United States and of the Several States and Territories, with an Outline of 

 the History of all Important Changes of Territory (Second Edition), by Henry Gannett. 1900. 8-'. 

 142 pp. 53 pi. Price 30 cents. 



172. Bibliography and Index of North American Geology, Paleontology, Poti'ology, and Mineralogy 

 for the Year 1809, by Fred Boughton Weeks. 1900. 8^. 141 pp. Price 15 cents. 



173. A synopsis of American Fossil Bryozoa, including Bibliography and Synonymy, by John M. 

 Nickles and Ray S. Bassler. 1900. 8°. 663 pp. Price 40 cents. 



In press: 



174. Survey of the Northwestern Boundary of the United States, 1857-1801, by Marcus Baker. 



175. Triangulation and Spirit Leveling in Indian Territory, by C. H. Fitch. 



176. Some Principles and Methods of Rock Analysis, by W. F. Hillebrand. 

 In preparation : 



— Bibliography and Catalogue of the Fossil Vertebrata of North America, by Oliver Perry Hay. 



WATER-SUPPLY AND IRRIGATION PAPERS. 



By act of Congress approved June 11, 1896, the following provision was made : 



'^Provided, That hereafter the reports of the Geological Survey in relation to the gauging of 

 streams and to the methods of utilizing the water resources may be printed in octavo form, not to 

 exceed one hundred pages in length and live thousand copies in number; one tliousand copies of 

 which shall bo for the oflicial use of the Geological Survey, one thousand five liumlred copies sliall be 

 delivered to the Senate, and two thousand five hundred coi)ies shall be delivered to the House of Rep- 

 resentatives, for distribution." 

 Under this law the following papers have been published : 



1. Pumping Water for Irrigation, by Herbert M. Wilson. 1896. 8^. 57 pp. 9 pi. 



2. Irrigation near Phoenix, Arizona, by Arthur P. Davis. 1897. 8'^. 97 pp. 31 pi. 



3. Sewage Irrigation, by George W. Rafter. 1897. 8°. 100 pp. 4 pi. 



4. A Reconnoissance in Southeastern Washington, by Israel Cook Russell. 1897. 8°. 96 pp. 7 pi. 



5. Irrigation Practice on the Great Plains, hy Elias Branson Cowgill. 1897. 8°. 39 pp. 12 pi. 



6. Underground Waters of Southwestern Kansas, by Erasmuth Haworth. 1897. 8°. 65 pp. 12 pi. 



7. Seepage Waters of Northern Utali, by Samuel Fortier. 1897. 8°. 50 pp. 3 pi. 



8. Windmills for Irrigation, by E. C. Murphy. 1897. 8'=. 49 pp. 8 pi. 



9. Irrigation near Greeley, Colorado, by David Boyd. 1897. 8'^. 90 pp. 21 pi. 



10. Irrigation in Mesilla Valley, New Mexico, by F. C. Barker. 1898. 8°. 51pp. 11 pi. 



11. River Heights for 1896, by Arthur P. Davis. 1897. 8°. 100 pp. 



12. Underground Waters of Southeastern Nebraska, by N. H. Darton. 1898. 8°. 56 pp. 21 pi. 



13. Irrigation Systems in Texas, hy William Ferguson Hutson. 1898. 8°. 67 pp. 10 pi. 



14. New Tests of Pumps and Water-Lifts used in Irrigation, by 0. P. Hood. 1898. 8°. 91 pp. 1 pL 



15. Operations at River Stations, 1807, Part I. 1898. 8°. 100 pp. 



16. Operations at River Stations, 1897, Part II. 1898. 8°. 101-200 pp. 



17. Irrigation near Bakersfield, California, by C. E. Grunsky. 1898. 8°. 96 pp. 16 pi. 



