INDEX 
Adair county, forest trees of, 56. 
Address, presidential, 16. 
Agassiz, A., quoted, 28, 31, 33. 
Algebra complex extended to threefold 
space, 302. 
Animals, deep sea, the coloration of, 27. 
Artesian well at Burlington, 70. 
Bain, H. Foster, 13, 55, 78, 80, 133. 
Balfour, A. T., quoted, 33, 33. 
Ball, E. D., 37-40, 304. 
A review of the cercopidae, 204. 
Baker, cited, 206 
Beddard, cited, 33, 35. 
Beyer, S. W., on buried loess, 117. 
Big Sioux Valley, old soil in, 123. 
Bruner, Professor, mentioned, 313, 314. 
Burlington, artesian well, 70, 
Buzzell, Helen M., 127. 
Calvin, S., quoted, 55, 80. 
Carpenter, Dr. W. B., cited, 33. 
Cercopidae of North America, 304. 
Chamberlin, T. C., quoted, 110. 
Christian science, alluded to, 130. 
Chronometer, the lower rapids of the 
Mississippi as, 93. 
Cloud-burst in Des Moines county, 66. 
Coelenterata, coloration, 27. 
Coloration in deep sea animals, 27. > 
Antipathidie, 31. 
Cave animals, 35. 
Cephalopods, 30. 
Coelopourus, 39. 
Crustaceans, 28, 30. 
Echinus, 29. 
Fishes, 30. 
Gorgonidse, 28, 31. 
Hydroidea, 31. 
Jelly fishes, 31. 
Luidia. 29. 
Ophiurians, 29, 30. 
Pentacrinus, 38. 
Penuatulidae, 30. 
Protozoa, 31. 
Salenia, 29. 
Salpa, 30. 
Commensalism, invertebrates living in, 28. 
Correlation, geological, some physical as- 
pects of, 131. 
Chief methods, 137. 
Conclusion, 153. 
Foundation of geologic. 134. 
Methods of geologic, 135 
Nature of the problems, 133. 
Crimean peninsula, topography of, 237. 
Crustacea, coloration of, 28. 
Des Moines county, cloud-burst in, 66. 
Diatoms, preliminary report, 47. 
Clear lake, 49. • 
Iowa City, 48, 49. 
Missouri river, 49. 
Okoboii lake, 51. 
Spirit Lake, 50. 
Drift, new light'On, 133. 
Echinodermata, coloration, 27, 28 
Fellows, list of, 8. 
Fellows elected, 15. 
Fink, B.. bibliography of N. A. lichens, 165. 
Fitch, cited, 304, 305. 
Fitzpatrick, T. J. and M. F. L., on the flora 
of southern Iowa, 173. 
Flora of Southern Iowa, 123. 
Forbes, S. A., cited. 40. 
Fowler, cited, 308, 209, 210. 
Frost, W. D., 116. 
Fultz, F. M., the Burlington Artesian 
well, 70 
Fultz, F. M , quoted, 78. 
Garretson, So. Dak., observations near, 
126. 
Germar, cited, 301. 
Goding, Dr., cited, 205. 
Gordon, C. H , quoted, 83. 
Gorgouidea, color markings, 27. 
Gow, Jas. E , 56, 63. 
Hall. T. Proctor, 303. 
Heidermann, Otto, mentioned, 316. 
Hemiptera, notes on, 36. 
Heteroptera, 37, 40. 
Genera described— 
Harmostes, 38. 
Hommmus. 37. 
Largidea, 38. 
Lioderma, 37. 
Mecidia, 38. 
Minoceps, 38. 
Palococoris, 38. 
Pamera, 38. 
Peribalus, 37. 
Systratiotus, 38. 
Localities. 
Cherokee, 39. 
Little Rock, 39. 
Rock Rapids, 39. 
Sioux City, 39. 
Sioux Palls, South Dakota, 39. 
Yankton, South Dakota, 39. 
Sllinoian stage. 
Erosion preceding, 81. 
Filling at time of, 83. 
Glaciation of, 83. 
Incubator, a simple, 116. 
Iowa, the flora of southern, 173. 
Iowan stage, 87. 
James river. South Dakota, 138. ’ 
Jassidae, 37. 
Kansan stage, 83, 93. 
Kellog, Dr., quoted, 83. 
Keyes, C. R., 131, 237, 229. 
Kewatin ice field, 78, 79, 81. 
Lake Agassiz, 90. 
Lake Pepin, 91. 
Leverett, Prank, 14, 123. 
