. INDEX ■ 661 



Vol. Page 



Orchidacese of Iowa, T. J. and M. F. L. Fitzpatrick VII, 187 



Oregon, See Cascade Mountains, Flora. 



Ore-Origin, Graphics of, C. R. Keyes XVIII, 95 



Ores, Ultimate Source of, Meteoritic Agglomeration and, 



C. R. Keyes XVII, 168 



Organs, Vegetative, See Grasses. 



Origin and Objects of the Academy I, II, 9 



Orr. Ellison, Exposures of lowan and Kansan (?) Drift 

 East of the Usually Accepted West Boundary Line 



of the Driftless Area XIV, 231 



Mounds and Mound Explorations in Northeastern 



Iowa XX, 259 



Indian Pottery of the Oneota or Upper Iowa River 



Valley in Northeastern Iowa XXI, 231 



Notable Mound Groups in and near the Proposed Gov- 

 ernment Park at McGregor, Iowa XXIV, 43 



Orthopterous Fauna, See Fauna. 



Osage Series, See Cherts. 



Oi;born, Herbert, Local Problems in Science, Presidential 



Address, 1888 1,1, 19 



Metamorphosis of a Species of Aleyrodes I, 7, 39 



Hemipterous Fauna of Iowa, 1,7. 40; I, 7, 65; 7. 77, 



120 ; I, 777. 103 V, 232 



Catalogue of Mammals of Iowa 1, 7, 41 



Distribution of Certain Hemiptera I, 7, 64 



Wax Glands of Pemphiginse 1, 7, 64 



Some Carboniferous Fossils from Jackson County.. 1,77, 115 



Abnormal Pelage in Lepus sylvatieus I, 77, 116 



Life Histories of Jassidae 1, 777, 101 



Notes on the Distribution of Hemiptera I, IV, 120 



Laboratory Notes in Zoology, I, IV, 124 



Observations on the Cicadidae of Iowa Ill, 194 



Notes on a New Species of Phlceothrips, with Descrip- 

 tion Ill, 228 



Notes on Coccidae Occurring in Iowa V, 224 



On the Occurrence of the White Ant (Termes 



flavipes) in Iowa V, 231 



Notes on the Hemiptera of Northwestern Iowa VI, 36 



Factors of Extinction IX, 47 



Anniversary Address, Iowa Academy of Science XIX, 17 



and Ball, E. D., Contributions to the Hemipterous 



Fauna of Iowa IV, 172 



and Mally, C. W., Biologic Notes on Certain Iowa In- 

 sects Ill, 203 



and Sirrine, F. A., Notes on Aphididse I, 777, 98 



Plant Lice Infesting Grass Roots II, 78 



and Wickham, H. F., Fragment of Catalogue of 



Coleoptera of Iowa 1, 7. 44 



Osborn, Herbert, Charter Member, L. H. Pammel XIX, 28 



