INDEX 673 



Vol. Page 

 Sewage of Iowa State College Sewage Plant, Chemical 



Composition of, J. B. Weems, J. C. Brown and E. C. 



Meyers IX, 70 



State College, R. L. Walker VIII, 240 



See Waters, Underground. 



Sex, Origin and Significance of, C. C. Nutting Ill, 32 



Shark's Brain, Nerve Cells of, G. L. Houser IV, 151 



Sheep's Brain, See Brain. 



Sheldon, A. E., Greetings From Nebraska Academy XIX, 8G 



Sliimek, Bohumil, Additional Notes on Iowa Mollusca... I', IV, 107 



Variation in the Succinidse of the Loess l.IV, HI 



A Theory of the Loess Ill, 82 



Perfect Flowers of Salix amygdaloides Ands Ill, 89 



Additional Observations on Surface Deposits in Iowa IV, 68 



The Flora of the Sioux Quartzite in Iowa IV, 72; V, 28 



Notes on Aquatic Plants from Northern Iowa IV, 77 



Is the Loess of Aqueous Origin? V, 32 



The Distribution of Loess Fossils VI, 98 



The Iowa Liverworts VI, 113 



The Distribution of Forest Trees in Iowa VII, 47 



Forestry in Iowa IX, 53 



Living Plants as Geological Factors X, 41 



Memorial of Ferdinand Reppert XI, XI 



Presidential Address, 1905, Botany in Its Relation to 



Good Citizenship XII, 1 



Loess of the Missouri River XIV. 237 



The Genesis of Loess a Problem in Plant Ecology. . . . XV, 57 



A Hybrid Oak '. XV, 77 



The Loess of the Paha and River Ridge XV, 117 



Prairie Openings in the Forest XVII, 16 



Early Iowa Locality Records XIX, 253; XXII, 105 



The Loess of Peczel, Hungary XXII, 285 



The Loess of Crowley's Ridge, Arkansas XXIII, 147 



The Loess and the Antiquity of Man XXIV, 93 



and Pammel, L. H., Memorial of Finley M. Witter XVII, 7 



Shimek, Ella, The Ecological Histology of Prairie Plants XXII, 121 



Shippee, Vernon C, See Knight and Shippee. 



Shipton, W. D., Pleistocene Exposures in Cedar Rapids 



and Vicinity XXI, 221 



The Occurrence of Barite in the Lead and Zinc Dis- 

 trict of Iowa, lUinios and Wisconsin XXII, 237 



A Note on Fulgurites from Sparta, Wisconsin :. XXIII, 141 



A New Stratigraphic Horizon in the Cambrian System 



of Wisconsin XXIII, 142 



Bibliography of the Driftless Area XXIV, 67 



Shore-lines, See Juan du Fuca. 



Shrubs, See Missouri River, Trees, Trees and Shrubs. 



Sieg, L. P., Some Recent Discoveries Concerning the Be- 

 havior of Platiuum-iridium Wires XVII, 185 



43 



