188 
IOWA ACADEMY OF SCIENCE 
INDEX 
Page 
Brain Dissection, Revival of an Old Method of 183 
Charge of an Electron by Wilson’s Method, Using Radium. 157 
Diphtheria Bacilli from a Post Mortem (Abstract) 97 
Dolomite, Decompositon of 107 
Elastic Properties of Certain Substances, Peculiarities in 147 
Eolian Origin of Certain Lake Basins of the Mexican Table Land 137 
Ferrous Iron, Determination of 105 
Forestry Problems of the Prairies of the Middle West 91 
Genesis of Loess; A Problem in Plant Ecology 57 
Iowa Waters 109 
Loess of the Paha and River-Ridge 117 
Necrology. Charles Aldrich 10 
Nucleations According to Barus 165 
Oak, A Hybrid 77 
Older and Younger Tectonics of the Great Basin Region, Some Relations of 
(Abstract) 145 
Peronosporales for 1907, Notes on 85 
Portland Cement, Life of Ill 
President’s Address 13 
Protozoans from Payette, Iowa 169 
Protective Adaptations in the Nesting Habits of Some Central American 
Birds 177 
Seeds of Pyrus, Histological Structure and Specific Gravity of 47 
Solar Surface During the Past Five Years 17 
Uric Acid Ferments 99 
Weed Seeds, Viability of. Under Different Conditions of Treatment...... 25 
Western Red-Beds, Stratigraphic Position of 143 
Wing Vernation, A Study in .^ 173 
AUTHOR’S INDEX. 
Baker, Hugh P 91 
Bartholomew, C. E 173 
Begeban, L ; 157, 165 
Fawcett, H. S 25 
Guthe, K. E 147 
Hadden, David E 17 
Hoeve, H. J 183 
Keyes, Charles R 137, 143, 145 
