IOWA ACADEMY OF SCIENCE 211 
INDEX 
Page. 
Aftonian Age of the Aftonian Mammallian Fauna 177 
Air Currents on Transpiration, The Influence of 13 
Artiflcial Drainage in Iowa, Some Geological Aspects of 151 
Bleached Flour, The Digestibility of 125 
Bonanzas in the Pachuca Silver District of Mexico, Distribution of 167 
Calcium, A Study in the Determination of 135 
Cranial Nerves of Siren Lacertina 223 
Early Health Regulations in Iowa, Historical Sketch of 229 
Elodea, The Staminate Flowers of 80 
Germination, Delayed 20 
Herpetology of Iowa, Contributions to 198 
Kerosene Oils, A Study of by Physical Methods • 181 
Loggerhead Turtle, The Development of the Posterior Lymph Hearts 227 
Lycogala Exiguum, Morg. Spore Formation in 83 
Maxwell Coulee and the Diversion of the Rio Mora 165 
Meteoric Agglomeration and the Ultimate Source of the Ores, Theory of.... 169 
Oenotheras, Early Historico-Botanical Records of 85 
Parasitic Fungi of Fayette County, Iowa, Preliminary List of 47 
Platinum-Iridium Wires, Some Recent Discoveries Concerning the Behavior 
of 185 
Prairie Openings in the Forest 16 
Portland Cement, Studies in the Solubility of, Continued from 1908 143 
Recent Mammals of Iowa, Annotated Catalogue of 211 
Simpson College Well, Pleistocene Record of 159 
Stern’s Tone Variator, Standardizing Tests of 195 
Sympathetic Nervous System in Birds, The Development of 219 
Water of Crystallization, Effect of Continued Grinding on 131 
Weeds in the West, The Problems of 34 
Well (4) at Grinnell, Points Regarding the Casing of 139 
AUTHOR’S INDEX. 
Brown, Maud A 13 
Calvin, Samuel 177 
Conard, Henry S 83 
Gates, R. R 85 
Heise, George 135 
Hendrixson, W. S 139 
