iin:3Z)E>:?c 
Address, annual, of president, 17. 
Anatomical studies of the leaves of 
Sporobolus and Panicum, 148. 
Anatomy of SphEerium, 173. 
Andrews, L. W., on reduction of sulphuric 
acid, 37. 
Annual address of president, 17. 
Articles of incorporation, 8. 
Area of slate near Nashua, N. H., 66. 
Associate members, list of. 11. 
Bacteria, Chromogenic, 135. 
Bain, H. F., report of librarian, 14. 
Ball, E. D., a study of the genus Clastop- 
tera, 183. 
Baris confinis, 307. 
Baris dolosa, 210. 
Beach, Alice M., contributions to a 
knowledge of the thrlpidae of Iowa, 
214. 
Biologic notes on certain Iowa insects, 202. 
Boston basin, geology of, 72. 
Buchanan gravels: An interglacial de- 
posit in Buchanan county, Iowa, 58. 
Calvin, S., the Le Claire limestone, 53. 
Buchanan gravels, 58. 
Carver, G. w. and Pammel, L. H., fungus 
diseases, 140. 
Carver, G. W., and Stewart, F. C., Inocula- 
tion experiments with Gymnosporan- 
gium macropus. 
Cephalopods, two remarkable,from upper 
Paleozoic, 76. 
Cercopidse, 183. 
Chironomus, sp., 211. 
Chromogenic bacteria, some notes on, 135. 
Cicadidse of Iowa, observations on the,195. 
Cicada dorsata. 193. 
septen-decim, 194. 
tibiccn, 193. 
Olastoptera, a study of the genus, 183. 
Clastoptera, 183. 
Clastoptcra dclicata, 184. 
ohtusa, 188. 
proteus, 186. 
xanthocepliala, 188. 
Clays of the Indianola Brick, Tile and 
Pottery works, 40. 
Combs, Eobt., and Pammel, L. H., 
Chromogenic bacteria, 135. 
Cone-in-Cone, nature of, 75. 
Constitution of the academy, 7. 
Corresponding members, list of, 11. 
County parks, 91. 
Cyclostome ear, homologies of, 29. 
Cosmos weevil, 307. 
Deep Wells in Des Moines county, some 
facts brought to light by, 63. 
Drew, G. A., Anatomy ot Sphocrium sulca- 
tum, 173. 
Ear of cyclostome, homologies of, 29. 
Encrinurus, variation in the position of 
the nodes in axial segments of pygi- 
dium of a species of, 79. 
Entomostraca, preliminary notes on the 
Iowa, 170. 
Epicccrus imbricatus .305. 
Flora of Western Iowa, 106. 
Fellows, list of, 10. 
Ferns, comparative study of spores of 
North American, 159. 
Flora of Western Iowa, 106. 
Forest distribution in Iowa, 96. 
Forest preservation, resolutions on. 15. 
Frisk, E. E , and T. P. Hall, mad stone, 45. 
Fultz, F. M., Recent discoveries of glacial 
scorings, 60. 
Some facts brought to light by deep 
wells, 63. 
Fungus diseases of plants at Ames, 
Iowa, 1895, 140. 
Geology of the Boston basin, 73. 
GclecMa sp., 303. 
Glacial scorings, recent discoveries of, in 
S. E. Iowa, 60. 
Grasses, anatomical study of, 150. 
Gravitation, physical theories of, 47. 
Ground cherry seed moth, 303. 
Gymnosporangium macropus Inoculation 
experiments with, 162. 
Hall, T. P., physical theories of gravita- 
tion, 47. 
Unit systems and dlmensions.‘45. 
Hail, T. P. and Frisk, E. E.,a mad stone, 45. 
Heliothrips, 216. 
Homologies of the Cyclostome ear, 29. 
Hendrixson, report of library commit- 
tee, 15. 
Inoculation experiments with Gymnos- 
porangium macropus, 163. 
Insects, biologic notes on certain Iowa, 203. 
Keyes, C. R., note on the nature of cone- 
in-cone, 75. 
Two remarkable Cephalopods from the 
Upper Paleozoic, 76. 
Lake preservation, resolution on, 15. 
Lead and Zinc mines, 64. 
Le Claire, limestone, 53. 
Leonard, A. G., recent developments in 
the Dubuque lead and zinc mines, 64. 
Librarian, report of, 14. 
Loess, a theory of the, 82. 
Mad stone, a, 45. 
Macbride, T. H., county parks. 91. 
Forest distribution in Iowa, 96. 
The nomenclature question among 
the slime moulds, 101. 
