410 IOWA ACADEMY OF SCIENCE Vor. XXVII, 1920 
Blanco, Cape, Vegetation of, Morton E. Peck 85 
Bode, I. T., Relation of Smaller Forest Areas in Non-forested Regions 
to Evaporation and Movement of Soil Water, 137 
Brome Grass, See Grass, Downy Brome. 
Bunch, C. C., Iowa Pitch Range Audiometer 230 
C 
Cable, E. J., Note on a Sink Hole 181 
Cable, E. J., Progress of Investigation on Iowan- Wisconsin Border, . . 184 
Call, R. Ellsworth, and Iowa Geology, Charles Keyes 35 
Calvin Memorial Portrait, Presentation of 23 
Chert, See Flint. 
Children, Measurement of Motility in, Lillian Tow. 235 
Cladocera of Okoboji Region, Frank A. Stromsten 265 
Clayton County, See Bee Plants. 
Colors, See Wallpaper. 
Conductivity Measurements, See Vacuum Tube Circuits. 
Copepoda of Okoboji Region, Frank A. Stromsten 269 
Corn Stalk Tissue and Prepared Biocolloids, Comparison of Absorp- 
tion Occurring in, L. E. Yocum and A. L. Bakke 123 
Cratty, R. L, See Pammel and Cratty. 
Cutworms, See Army Worms. 
D 
Davis, W. H., Teaching of Plant Pathology 81 
Dodd, L. E., Table of Total Number of Stroboscopic Velocity Curves 
for any of Natural Numbers 1 to 500 219 
E 
Ensign, Dwight C., Rotatoria of the Okoboji Region 271 
Erickson, Carl I., What Constitutes Voice 232 
Eskers in Iowa, Field of, John E. Smith 180 
Eye and Hand, Coordination of. Measure of Capacity for Acquiring 
Skill in, Wilhelmine Koerth 237 
F 
Fenton, F. A., A Study of the Phylogeny of the Anteoninse 337 
Field Water Supplies, Some Experience with Laboratory Control of. 
Jack J. Hinman 253 
Fishes, See Okefinokee Swamp. 
Flint and Chert, Use of Terms, Waldo S. Clock 167 
Forest Areas, Smaller, in Non-forested Regions, Relation of, to Evap- 
oration and Movement of Soil Water, 1. T. Bode 137 
Fungi, Alaska, J. P. Anderson 99 
G 
Gaw, Esther Allen, Talent Survey in our Music School 227 
Geauque, H. A., and Ralston, F. Paul, Vacuum Tube Circuits as 
Source of Power for Conductivity Measurements 199 
Geology, See Agricultural Geology. 
Georgia, See Okefinokee Swamp. 
Clock, Waldo S., Use of Terms Flint and Chert 167 
Grass, Downy Brome, in Iowa, H. E. Jaques 133 
