ADVERTISEMENT. VII 



141. The Eocene Deposits of the Middle Atlantic Slope in Delaware, Maryland, and Virginia, 

 by William Bullock Clark. 1896. 8°. 167 pp. 40 pi. Price 15 cents. 



142. A Brief Contribntiou to the Geolooy and Paleontology of Northwestern Louisiana, by 

 T. Wayland Vaughan. 1896. 8°. 65 pp. 4 pi. Price 10 cents. 



143. A Bibliography of Clays and the Ceramic Arts, by John C. Branner. 1896. 8^. 114 pp. 

 Price 15 cents. ^ . , ^ _ , , „, m 



144. The Moraines of the Missouri Coteau and their Attendant Deposits, by James Edward 1 odd. 

 1896. 8°. 71 pp. 21 pi. Price 10 cents. 



145. The Potomac Formation in Virginia, by W. M. Fontaine. 1896. 8^. 149 pp. 2 pi. Price 



146. Bibliography and Index of North American Geology, Paleontology, Petrology, and Miner- 

 alooy for the Year 1895, by F. B. Weeks. 1896. 8°. 130 pp. Price 15 cents. 



147. Earthquakes in California in 1895, by Charles D. Perriue, Assistant Astronomer in Chargo 

 of Earthquake Observations at the Lick Observatory. 1896. 8'-. 23 pp. Price 5 cents. 



148 Analyses of Rocks, with a Chapter on Analytical Methods, Laboratory of the United States 

 Geological Survey, 1880 to 1896, by F. W. Clarke and W. F. Hillebrand. 1897. 8^. 306 pp. Price 



20 cents. , , ,,. 



149. Bibliography and Index of North American Geology, Paleontology, Petrology, and Miner- 

 alogy for the Year 1896, by Fred Boughton Weeks. 1897. 8°. 152 pp. Price 15 cents. 



150. The Educational Series of Rock Specimens collected and distributed by the United States 

 Geological Survey, bv Joseph SUas Diller. 1898. 8^. 398 pp. 47 pi. Price 25 cents. 



151. The Lower Cretaceous Gryphreas of the Texas Region, by R. T. Hill and T. Wayland 

 Vaughan. 1898. 8°. 139 pp. 25 pi. Price 15 cents. 



152. A Catalogue of the Cretaceous and Tertiary Plants of North America, by F. H. Knowlton. 

 1898. 8°. 247 pp. Price 20 cents. 



153. A Bibliographic Index of North American Carboniferous Invertebrates, by Stuart Weller. 

 1898. 8°. 653 pp. Price 35 cents. 



154. A Gazetteer of Kansas, by Henry Gannett. 1898. 8°. 246 pp. 6 pi. Price 20 cents. 



155. Earthquakes in California in 1896 and 1897, by Charles D. Perrine, Assistant Astronomer 

 in Charge of Earthquake Observations at the Lick Observatory. 1898, 8°. 47 pp. Price 5 cents. 



156. Bibliography and Index of North American Geology, Paleontology, Petrology, and Miner- 

 alogy for the Y'ear 1897, by Fred Boughtou Weeks. 1898. 8". 130 pp. Price 15 cents. 



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

 Gannett. 1899. 8°. 775 pp. Price 40 cents. 



161. Earthquakes in California in 1898, by Charles D. Perrine, Assistant Astronomer m Charge 

 of Earthquake Observations at the Lick Observatory. 1899. 8°. 31pp. 1 pL Price 5 cents. 



In preparation: 



157. The Gneisses, Gabbro-Schists, and Associated Rocks of Southeastern Minnesota, by C. W. 



158. The Moraines of southeastern South Dakota and their Attendant Deposits, by J. E. Todd. 



159. The Geology of Eastern Berkshire County, Massachusetts, by B. K. Emerson. 



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 prin'ed in octavo form, not to 

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

 shall be for the offtoial use of the Geological Survey, one thousand five hundred copies shall be deliv- 

 ered to the Senate, and two thousand five hundred copies shall be delivered to the House of Repre- 

 sentatives, for distribution." 



Under this law the following papers have been issued: 



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



2. Irrigation near Phcenix, 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. AReconnoissanceinSoutheasternWashington, by Israel Cook Russell. 1897. 8°. 96 pp. 7pl. 



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



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



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



8. Windmills for Irrigation, by Edward Charles 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^. 51 pp. 11 pi. 



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



12. Water Resources of Southeastern Nebraska, by Nelson H. Darton. 1898. 8^'. 55 pp. 21 pi. 



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



14. New Tests of Certain Pumps and Water-Lifts used in Irrigation, by Ozni P. Hood. 1889. 8". 

 91 pp. 1 pi. 



15. Operations at River Stations, 1897, 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. 



18. Irrigation near Fresno, California, by C. E. Grunsky. 1898. 8°. 94 pp. 14 pi. 



19. Irrigation near Merced, California, by C\ E. Grunsky. 1899. 8-^. 59 pp. 11 pi. 



20. Experiments with Windmills, by T. O. Perry. 1899. 8". 97 pp. 12 pi. 



