IOWA ACADEMY OF SCIENCE 279 
INDEX 
Algae of Iowa, Notes on 47 
Alluvial Changes in Southwestern Iowa, Recent 257 
Channel of the Mississippi River Between Lansing and Dubuque, Some 
Features of, and Their Probable History 213 
Characteristics of Rocks, Effects of, on Their Erosion 267 
Erysiphaceae, Iowa 15 
Iowa Ground Waters, Some Features of 187 
Iowan and Kansan (?) Drift, Exposures of, East of the Usually Accepted 
Boundary Line of the Driftless Area 231 
Karokinesis, Studies in 107 
Lateral Line System of Amphiuma, The Innervation of 273 
Loess of the Missouri River 237 
Mesa De Maya, Physiographic Significance of 221 
Municipal Water Problems 115 
Physical Science Laboratory of the State Normal 271 
Poisonous Plants of Iowa, A Catalog of the . . 147 
Presidential Address 7 
Ray Flowers of Certain Compositae, A Study of the Variation of the 
Number of 89 
Silica, The Determination of 201 
Tertiary Terranes of New Mexico 223 
Tissues in Ferns, Homologies of 85 
Volcanic Phenomena About Citlaltepetl and Popocateptl 229 
AUTHOR’S INDEX. 
Anderson, J. P 15 
Bates, C. O 7 
Buchanan, Robert Earle. 47 
Conard, Henry S 85 
Dudgeon, Winfield 89 
Fogel, Estelle D 147 
Gow, James Ellis 107 
Hendrixson, W. S. 187 
Keyes, Charles R 221, 223, 229 
Knight, Nicholas 201 
Norris, H. W 273 
Orr, Ellison 231 
Page, A. C 271 
Pammel, L. H 115,147 
Shimek, B 237 
Todd, J. E 257,267 
Watson, E. B 177 
