Geology. 83 



]STo. 296. Economic Geology of the Independence Quadrangle, 

 Kansas ; by Frank C. Shrader and Erasmus Haworth. Pp. 

 74, with 6 plates and 3 figures. 



No. 297. The Yampa Coal Field, Routt County, Colorado ; 

 by N. M. Fenneman and Hoyt S. Gale : with a chapter on the 

 Character and Use of the Yampa Coals by Marius R. Camp- 

 bell. Pp. 97, with 9 plates and 2 figures. 



No. 303. Preliminary Account of Goldfield, Bullfrog, and 

 other Mining Districts in Southern Nevada ; by Frederick 

 Leslie Ransome ; with Notes on the Manhattan District by G. H. 

 Garret and W. H. Emmons. Pp. 98, with 5 plates and 15 figures. 



No. 305. The Analysis of Silicate and Carbonate Rocks ; by 

 W. F. Hillebrand. Pp. 200, with 24 figures. 



No. 314. Report on Progress of Investigations of Mineral 

 Resources of Alaska in 1906 ; by Alfred H. Brooks and others. 

 Pp. 235, with 4 plates and 9 figures. 



No. 315. Contributions to Economic Geology 1906. Part I — 

 Metals and Non-metals, except Fuels. S. F. Emmons, E. C. Eckel, 

 Geologists in Charge. Pp. 505, with 4 plates and 20 figures. 



Water Supply and Irrigation Papers, No. 182. Flowing 

 Wells and Municipal Water Supplies in the Middle and Northern 

 Portions of the Southern Peninsula of Michigan ; by Frank 

 Leverett and others. Pp. xl, 292, with 5 plates and 69 figures. 



No. 187. Determination of Stream Flow during the Frozen 

 Season ; by H. K. Barrows and Robert E. Horton. Pp. 99, 

 with 1 plate and 14 figures. 



No. 188. Water Resources of the Rio Grande Valley in New 

 Mexico and their Development ; by Willis T. Lee. Pp. 59, 

 with 10 plates and 2 figures. 



No. 191. The Geology and Water Resources of the Western 

 Portion of the Panhandle of Texas ; by Charles N. Gould. Pp. 

 70, with 7 plates and 3 figures. 



No. 192. The Potomac River Basin ; by Horatio N. Parker, 

 Bailey Willis, R. H. Bolster, W. W. Ashe, and M. C. Marsh. 

 Pp. vi, 364, with 10 plates and 2 figures. 



No. 193. The Quality of Surface Waters in Minnesota; by 

 R. B. Dole and F. F. Wesbrook. Pp. 171, with 7 plates and 

 4 figures. 



No. 194. Pollution of Illinois and Mississippi Rivers by Chi- 

 cago Sewage ; by Marshall O. Leighton. Pp. 369, with 2 

 plates and 5 figures. 



No. 196. Water Supply of Nome Region, Seward Peninsula, 

 Alaska, 1906 ; by John C. Hoyt and Fred F. Henshaw. Pp. 

 52, with 6 plates and 1 figure. 



No. 200. Weir Experiments, Coefficients, and Formulas (Revi- 

 sion of Paper No. 150) ; by Robert E. Horton. Pp. 195, with 

 38 plates and 17 figures. 



2. Wisconsin Geological and Natural History Survey. Bul- 

 letin No. xv. Economic Series No. 10. The Clays of Wisco?isin 

 and their Uses, by Heinrich Ries ; with a Report on Molding 



