IOWA ACADEMY OF SCIENCE 
229 
INDEX 
Page 
Arterio Sclerosis, The Relative Frequency of, of the Various Arteries 193 
Balance, Effect of Temperature Inequalities on 181 
Battery, The Googler Primary. 167 
Birds, Summer Resident, of Polk County, Iowa ' 197 
Carbonic Column of Rio Grande Region 159 
Cranial Nerves, Fifth and Seventh, in Plethodon Glutinosus. 189 
Embryology of Chironomus, Some Observations on 221 
Evaporation from Free Water Surfaces 185 
Fungus Diseases of Plants, Notes on Factors in 41 
Hysteresis Loop 165 
Iowa Ground Waters, Some Features of, II 135 
Iowa Rock, The Flora of. 99 
Manure, The Action of, on a Certain Soil 103 
Nervous Elements, The Migration of, into the Dorsal and Ventral Nerve- 
Roots of Embryos of the Pig 217 
Okoboji Lakeside Laboratory 131 
Orotaxial Geologic Correlation and Diastrophism 153 
Polyporaceae, Some Parasitic 23 
Polyporaceae of Fayette, Iowa 19 
President’s Address 11 
Smaltite, The Analysis of, with Special Reference to the Estimation of 
Arsenic and Cobalt 143 
Thrust-Planes, Significance of, in the Great Basin Region 151 
Underground Organs of a Pew Weeds 31 
Viburnum Nudum, The Fruit of 145 
AUTHOR’S INDEX. 
Galvin, Samuel ll . 
Craven, W. N 221 
Fagen, Lester P 197 
Pogel, Estelle D 31 
Hendrixson, W. S 135 
Keyes, Charles R 151, 153, 159 
King, Charlotte M. 41 
Knight, Nicholas 143, 145 
Kuntz, Albert 217 
Learn, Clarence D 23 
Lott, Robert H 145 
Macbride, Thomas H 131 
