PETROLOGY, AND MINERALOGY FOR 1892-1900. 
121 
Iowa— Continued. 
Geology of Madison County. Tiltonand Bain, 
5396. 
Geology of Mahaska County, Bain, 172. 
Geology of Marshall County. Beyer, 135. 
Geology of Montgomery County, Lonsdale, 
3567. 
Geology of Muscatine < lounty, Qdden, 5517. 
Geology of Osceola and Dickinson counties, 
MacBride, 3625. 
Geology of Plymouth County.Bain, L96. 
Geology of Polls County, Bain, 192. 
< .rology of Scott County, Norton, 4124. 
Geology of Story County, Beyer, 136. 
Geology of Van Buren County, Gordon, 2063. 
Geology of Warren County, Tilton, 5392. 
( logy of Washington County, Bain, 179. 
Geology of Woodbury County, Bain, 180. 
< feology of Worth County, Williams, 6195. 
Glacial markings in Iowa, Fultz, 1928. 
Glacial scorings in Iowa, Fultz, 1929. 
Glacial scorings in Iowa. Keyes, 3072. 
Gypsum deposits of Iowa. Keyes, 3073. 
Hydro-geology of Upper Mississippi Valley, 
Mead, 3889. 
Inequalities in the old Paleozoic sea bottom 
Todd, 4408. 
Interglacial deposits of Iowa, Calvin, 717. 
Interglacial earth, Know lion, 3219. 
[nterloessial till near Sioux City, Todd and 
Bain, 5411. 
Iowa building stones, Bain, 177,197. 
Iowa City, sandstone near, Keyes, 3042. 
[owa gj psum, Keyes, 3107. 
Iowa lead and zinc deposits, Leonard, 3458. 
Iowa section of the Mississippian series.Bain, 
173. 
Lansing lead mines, Leonard, 3459. 
Lead and zinc deposit- of Iowa, Leonard. 
3460, 3461, 3462. 
i.e ciaire limestone, Calvin, 7(H), 701. 
Magnesian series of the Northwestern States, 
Hall and Sardeson, 2249. 
Maquoketa shales in Iowa, Calvin, 697. 
MiddleCoal Measures, Bain and Leonard, 204. 
Millerite, Keyes, 3056. 
Mineralogical notes, Keyes, 3050. 
Minerals of Webster County, Spencer, A C, 
5113. 
M Lssourian series, Keyes, 3142. 
Natural gas and oil, Keyes, 3049. 
Natural gas in drift. Leonard, 3463. 
New Echinodermata from Paleozoic rocks. 
Miller and Cuiiey, 4001. 
New species of Paleozoic fossils. Miller and 
Gurley, 4003. 
"Nickel ore" horn Iowa, Keyes, 3039. 
Niobrara chalk, Calvin, 694, 698. 
Northwestern Iowa, geology of, Todd, 5403. 
observations in the vicinity of Wall Lake, 
Wilder, 6139. 
Occurrence of quenstedtite, Kuntze, 3287. 
Origin of certain features of coal basins. Bain, 
176. 
Origin of the present drainage system of War- 
ren County, Tilton, 6389. 
Orthoceratite from the Carboniferous, Keyes. 
3102. 
Iowa— Continued. 
our loeal geology, Barris, 263. 
Outline map of drift sheets, Bain, 194. 
Palgeopalseomon newberryi, Whitfield, 6096. 
Paleozoic fossils, check list of, Bierbauer,442. 
Paleozoic strata, of Iowa, Norton, 4117. 
Peculiarities of Mystic coal seam, Bain, 169. 
Petalocrinus mirabilis n. sp., Weller and 
Davison, 5978. 
Physiographic development of Mississippi 
Valley, Hershey, 2481. 
Pine Creek conglomerate, Udden, 5522. 
Pleistocene history of Iowa, McGee, 3847. 
Pre-Glacial drainage of Illinois and Iowa, 
Leverett, 3475. 
Pre-Glacial elevation of Iowa, Bain, 174. 
Pre-Glacial soils, Udden, 5514. 
Pre-Kansan peat bed, Macbride, 3623. 
Present and pre-Glacial drainage in Iowa, 
Fultz, 1926. 
Quaternary geology, Gordon, 2061. 
Quaternary section near Des Moines, Keyes 
and Call, 3044. 
Record of Grinned deep boring, Jones, 2927. 
Bedrock sandstone, Keyes, 3043. 
St. Louis and Warsaw formations in Iowa, 
Gordon, 2064. 
St. Louis limestone, Jones, 2924. 
SI Louis Limestone in Iowa, bain, 166. 
Satin spar from Dubuque, Leonard, 3457. 
Sigourney deep well, bain, 168. 
Sioux quartzite, Beyer, 433. 
sixth annual report, Calvin, 713. 
Spirifers from the Devonian, Calvin, 690. 
State Quarry lime-tone, Calvin, 707. 
Strata between Ford and Winterset, Tilton, 
Stratigraphy of the Kansas Coal Measures, 
Keyes, 3083. 
Structure of the Mystic coal basin, Bain, 167. 
Sub-Aftonian till, Beyer, 131. 
Surface. deposits in Iowa. Shimek, 4956. 
Sweetland Creels beds, Udden, 5518. 
The Prairies, McGee, 3857. 
Upper Silurian in Iowa. Wilson, 6264. 
Variation of the nodes of a species of Encri- 
nurus, Norton, 4121. 
Volcanic eruption in Iowa, old, Keyes, 3055. 
Weathered zone (Sangamon), Leverett, 3493. 
weathered zone (Yarmouth), Leverett, 3494. 
Wisconsin and Kansan drift, Bain, 187. 
Zinc in Iowa. Leonard, 3456. 
Jamaica. 
Cretaceous and Eocene corals from Jamaica, 
Vaughan, 5734. 
Formations and changes of level in Jamaica, 
Spencer, 5152. 
Geology of Jamaica, Hershey, 2485. 
Geology of Jamaica, Hill, 2564. 
On the genus Barrettia, Whitfield, 6108. 
Rudistse from Cretaceous rocks of Jamaica, 
Whitfield, 6107. 
Stratigraphic succession in Jamaica, Hill, 2559. 
Juratrias. 
General. 
Connecticut sandstone group, Hitchcock, 2611. 
Correlation papers, Newark system, Russell, 
I. C. 4698. 
