230 



INDEX. 



Melampsalta parvula, 203. 

 Members, associate, 11. 



Corresponding, 11. 

 Membership of the Academy, 10. 

 Metazoa, sex in, 35. 

 Myxomycetes, 101. 



fiautilus ponderosus, 76. 



Needed changes in scientific methods, 17, 



Nomenclature question among the slime 



moulds, 101. 

 Norris, H. W , address by, 17. 



Homologies of Oyclostome ear, 39. 

 Norton, W. H., variation in the position 



of the nodes on the axial segments 



of Pygidium of a species of Encrinu- 



rus, 79. 

 Nutting, C. C, origin and significance of 



sex, 33. 



Officers of the Academy, 5. 

 Origin and significance of sex, 33. 

 Orthoceras fanslercnsis, 77. 

 Osborn, H., Observations on the Oicadidaj 

 of Iowa, 195. 

 Note on a new species of Phloeothrips 



with description, 338. 

 Report of secretary-treasurer, 13. 

 Osborn, H. and Mally, 0. W., biologic notes 

 on certain Iowa insects, 303. 



pammel, Emma, and Sirrine, Emma, some 

 anatomical studies of the leaves of 

 Sporobolus and Panicum, U8. 



Pammel, L. H., notes on flora of western 

 Iowa, 106. 



Pammel, L. H., and' Carver, G. W., fun- 

 gus diseases of plants at Ames, Iowa, 

 1895, 140. 



Pammel, L. H., and Combs, Robt., some 

 notes on Ohromogenic bacteria, 135. 



Panicum and Sporobolus, anatomical 

 studies of the leaves of, 148. 



Panicum, 155. 



Panicum, capillars, 156. 

 crus-galli, 157. 

 proliferum, 156. 



Parks, county, 91. 



Phloeothrips, note on a new species of, 

 with description, 338. 



PhJccothrips verbasci n sp., 328. 



Physical theories of gravitation, 47. 



President's annual address, 17. 



Proceedings of tenth annual session, 13. 



Recent developments in the Dubuque 



lead and zinc mines, 64. 

 Recent discoveries of glacial scorings in 



southeast Iowa, 68. 

 Reduction of sulphuric acid by copper, 



as a function of the temperature, 37. 



Report of librarian, 14. 



Report of secretary-treasurer, 13. 



Resolutions on preservation of forests 



and lakes, 15. 

 Ross, L. S.. Preliminary notes on the 



Iowa Entomostraca, 170. 



Secretary-treasurer, report of, 13. 



tSalix amygdaloides, perfect flowers of, 89. 



SericothHps? 216. 



Sericothrips? perplexa. 216. 



Sex, origin and signiflcance of, 32. 



Shimek. B., A theory of the Loess, 83. 



Perfect flowers in salix amygdaloides 

 Ands. 89. 



Sirrine, Emma, and Pammol, Emma, 

 Some anatomical studies of sporo- 

 bolus and Panicum, 148. 



Slate near Nashua, N, H., Area of, 66. 



Slime-moulds, Nomenclature question 

 among, 101. 



Sphctrium sulcatum. Anatomy of, 173. 



Spores of North American ferns, study 

 of, 159. 



Sporobolus and panicum, anatomical 

 studies of the leaves of, 148. 



Sporobolus. 151. 



Sporobolus cryptandrus, 153. 

 heterolepis, 151. 

 hookerl, 153. 

 vaginseflorus, 155. 



Stewart, F. C, and Carver, Q. W., Inocu- 

 lation experiments with Gymnos- 

 porangium macrop\is, 163. 



Sulphuric acid, reduction of, 37. 



Thripida; of Iowa, contributions to a 



Knowledge of, 314. 

 Thrips incequalis, 233. 

 lactucm, 234. 

 maidis, 319. 

 pallida, 326. 

 variabilis, 220. 

 Tibiccn rimosa, 300. 



Tilton. J. L , area of slate near Nashua, 

 N. H., 66. 

 Notes on the geology of the Boston 

 basin, 73. 



Unit systems and dimensions, 45. 



Weaver, C. B., comparative study of the 

 spores of North American ferns, 159. 



Youtz. L. A., clays of the Indianola Brick, 

 Tile and Pottery works, 40. 



Zinc mines, recent developments in lead 

 and, 64. 



