76 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Economic geology— Continued. 
Iowa — Continued. 
Deep wells in Iowa, Fultz, 1930. 
Des Moines coal-bearing series, Keyes, 3113. 
Dubuque lead and zinc mines, Bain, 207. 
Economic geology of Des Moines County, 
Iowa, Keyes, 3075. 
Economic geology of Lee County, Iowa, Keyes, 
3074. 
Geological section of the artesian well at 
Cedar Rapids, Iowa, Norton, 4120. 
Geology of Allamakee County, Iowa, Calvin, 
G96. 
Geology of Appanoose County, Bain, 181. 
Geology of Boone County, Beyer, 432. 
Geology of Buchanan County, Calvin, 715. 
Geology of Carroll County, Bain, 205. 
Geology of Cerro Gordo County, Calvin, 712. 
Geology of Dallas County, Leonard, 3464. 
Geology of Decatur County, Bain, 195. 
Geology of Delaware County, Calvin, 714. 
Geology of Dubuque County, Iowa, Calvin 
and Bain, 720. 
Geology of Guthrie County, Bain, 193. 
Geology of Hardin County, [Iowa,] Beyer, 438. 
Goology of Humboldt County, Macbride,3624. 
Geology of Jones County, Calvin, 699. 
Geology of Johnson County, Calvin, 711. 
Geology of Keokuk County, Iowa, Bain, 171. 
Geology of Linn County, Iowa, Norton, 4118. 
Geology of Lyon and Sioux counties. Iowa, 
Wilder, 6140. 
Geology of Madison County, Tilton and Bain, 
5396. 
Geology of Mahaska County, Iowa, Bain, 172. 
Geology of Marshall County, Beyer, 435. 
Geology of Montgomery County, Iowa, Lons- 
dale, 3567. 
Geology of Muscatine County, Udden, 5517. 
Geology of Osceola and Dickinson counties, 
Iowa, Macbride, 3625. 
Geology of Plymouth County, Bain, 196. 
Geology of Polk County, Bain, 192. 
Geology of Scott County, Norton, 4124. 
Geology of Story County, Beyer, 436. 
Geology of Van Buren County, Iowa, Gordon, 
2063. 
Geology of Warren County, Tilton, 5392. 
Geology of Washington County, Bain, 179. 
Geology of Woodbury County, Bain, 180. 
Geology of Worth County, Iowa, Williams, 
6195. 
Gypsum deposits of Iowa, Keyes, 3073. 
Iowa building stones, Bain, 177, 197. 
Iowa gypsum, Keyes, 3107. 
Iowa lead and zinc deposits, Leonard, 3458. 
Lansing lead mines, Iowa, Leonard, 3459. 
Lead and zinc deposits of Iowa, Leonard, 
3460, 3461, 3462. 
Natural gas and oils, Keyes, 3049. 
Natural gas in drift, Leonard, 3463. 
[Natural] Gas wells near Letts, Witter, 6401. 
Origin of certain features of coal basins, Bain, 
176. 
Peculiarities of Mystic coal seam, Bain, 169. 
Record of Grinnell deep boring, Iowa, Jones, 
2927. 
Economic geology — Continued. 
Iowa — Continued. 
Sigourney deep well, Bain, 168. 
Structure of Mystic coal basin, Bain, 167. 
Zinc in Iowa, Leonard, 3456. 
Kansas. 
Coal fields of Kansas, Haworth, 2354, 2361. 
Coal in Atchison County, Kans., Knerr, 3200. 
Coal Measure soils, Haworth, 2364. 
Deep well at Madison, Bushong, 671. 
Des Moines coal-bearing series, Keyes, 3113. 
Drill hole at Wichita, Mead, 3891. 
Gypsum and gypsum cement plasters, Grims- 
ley and Bailey, 2192a. 
Gypsum deposits, Grimsley, 2186, 2187. 
Gypsum deposits of Kansas, Grimsley, 2192. 
Gypsum in Kansas, Grimsley, 2190. 
Kansas Coal Measures, Crane, 1137. 
Mineral resources of Kansas, Haworth, 2376. 
Natural gas and oil in Kansas, Bailey, E. H. S., 
153. 
Oil and gas in Kansas, Haworth, 2356, 2362. 
Onyx deposits of Barren County, Gorby, 2060. 
River counties of Kansas, Hay, 2397. 
Salt deposits, Ward, 5861. 
Stratigraphy of the Kansas Coal Measures, 
Haworth, 2355, 2375. 
Structure of Iola gas field, Orton, 4170. 
Topeka coal hole, Kansas, Smyth, 5068. 
Underground waters, Haworth, 2369. 
University geological survey of Kansas, 
Haworth, 2365. 
Water resources of the Great Plains, Hay, R., 
2394. 
Kentucky. 
Bituminous rock, Morris, 4045. 
Clays and building stones of Kentucky, 
Crump, 1207. 
Coal field, Big Stone Gap, Campbell, 723. 
Coal field, Big Stone Gap, Hodge, 2654. 
Eastern coal regions of Kentucky, Macfar- 
lane, 3626. 
Estillville folio, Campbell, 724. 
London folio, Campbell, 737. 
Petroleum, natural gas, and asphalt, Orton, 
4160. 
Louisiana. 
Avery Island salt mine, Lucas, 3580. 
Clays of Louisiana, Clendenin, 1018. 
General geology, Harris and Veatch, 2318. 
Louisiana clay samples, Ries, 4632. 
Rock salt in Louisiana, Lucas, 3581. 
Salt mines of Averys Island, Louisiana, 
Romeyn, 4662. 
The five islands, Veatch, 5746. 
Maine. 
Production of tin, Rolker, 4661. 
Maryland. 
Acidic eruptions of Maryland, Keyes, 3080. 
Artesian well prospects, Darton, 1313. 
Artesian well prospects in Virginia, Mary- 
land, and Delaware, Darton, 1309. 
Chrome in the Appalachian region, Glenn, 
2042. 
Fredericksburg folio, Virginia-Maryland, 
Darton, 1307a. 
Gold mining in the Appalachians, Nitze and 
Wilkens, 4009. 
