234 
INDEX. 
Lichens, North America— Bibliography 
of, 165. 
Liverworts of Iowa, 113. 
Loess buried in Story county, 117. 
Fossils In, 118, 119. 
Loess fossils, distribution of, 98. 
Genera described— 
Bipdaria, 104. 
Cochliopa, 100. 
Hellicina, 108. 
Falygyra, 101, 103, 107. 
Pyramidula, 102. 
Sphy radium, 103. 
Succinea, 99, 100, 101, 103, 104. 
vitrea, 100. 
zonitoideas, ICO, 101, 104. 
Map of Fairmont Park, 112. 
Near Sioux Falls, 124. 
Lonsdale, E, H., obituary notice, 13. 
Mallett, R. T., mentioned, 237. 
MacBride, T. H., presidential address, 16. 
McGee, W. J., cited, 55, 80. 
Merrill, J. W., cited, 68. 
Michigan, University of, 18. 
Mississippi river — 
Lower rapids in, 74. 
Trough. 133. 
Mosley, Professor, quoted, 27, 54. 
Mosses of Iowa, preliminary list of, 154, 
Muscatine county— 
Diatomaceous earth, 53. 
Diatoms of, 53. 
Myers, P. O., 47, 53, 114. 
Nebraska, the drift in northeastern, 132. 
Norton, W. H , 80. 
Nutting, O. 0., 27. 
Officers elected, 14. 
Osborn, Herbert, 16, 216. 
Notes on Hemiptera, 36. 
Papers read at 1898 meeting, 14. 
Pentocrinus, distribution of, 37, 28, 
Pentatomidm, 40. 
Sub-families— 
Acanthosomince, 46. 
Asopinae, 40. 
Pentatomince, 41. 
• Tribes— 
Aceliaria, 43. 
Halyaria, 43. 
Pentatomarla, 43 
Podoparia, 41. 
Permian— 
Comparative table, 339. 
Question, 329. 
Rocks of Eastern Russia, 339 
Provancher, cited, 204. 
Ricker, Maurice, 66. 
Ross, L. S.,116. 
Sangamon stage, 86. 
Savage, T. E., 114, 154. 
Say, cited, 204, 308. 
Sea urchins, coloration of, 36. 
Schaeffer, Dr. O. A., obituary notice, 13. 
cited, 17. 
Shimek, B., 47, 98, 113. 118, 131, 134. 
South Dakota, new light on the drift in, 
133. 
Stall, quotPd, 305, 208. 
Steamooat Springs, Colorado, 93. 
Elevation of, 97. 
Location of, 93. 
Stol, cited, 40. 
Story county, buried loess in, 117. 
Summers, 306. 
Thomson. SlrWyviile, cited, 33. 
Todd, J. E., 133. 
Tolstoi, Count, quoted, 34. 
Turkey ridge, preglacial deposits on, 126. 
Udden, J. A., 53, 54, 110,130. 
Uhler, P., cited, 204, 219, 323, 325. 
quoted, 40. 
Verrill, cited, 32, 33, 38. 
Warren, cited, 76, 77. 
Wind dejposits, 119. 
Wisconsin stage, 89. 
Witter, F. M , 93. 
Worthen, quoted, 76. 
