6 IOWA ACADEMY OF SCIENCE 



The Ecology of a Prairie Formation with Adjacent Swamp and "Woodland 



in Story County, Iowa Ada Hayden 



Gives a physiographic account of the region with a physical 

 analysis of the soil and the temperature records for an entire growing 

 season and a list of plants found on each formation and the re-popula- 

 tion of tillable soil which is reverting to pi'airie. 



Some Notes on Iowa Fungi T. H. Macbride 



The Flowers of Myriophyllum Spicatum N. D. Knupp 



(Introduced by R. B. Wylie.) 



Glaciated Rock Surfaces near Linn and at Quarry W. H. Norton 



Some Features of the Bering River Coal Field, Alaska George F. Kay 



Problems on the Border Lines between Geology and the Other Sciences. .. . 



George F. Kay 



Graphics of Ore Origin Charles R. Keyes 



Volcanic Phenomena of Coon Butte Eegion Charles R. Keyes 



Depositional Phases of Eolation Under the Stimulus of Aridity; with Special 



Reference to Iowa Charles R. Keyes 



Some Characteristics of Light-Negative Selenium Miss Lilah B. Crum 



(Introduced by G. W. Stewart.) 

 The Use of a Ballistic Galvanometer and a Pendulum for Measuring Rapidly 



Fluctuating Resistances Wm. H. Clark 



(Introduced by G. W. Stewart.) 



Notes in Regard to Efficiencies of Luminous Flames G. W. Stewart 



On the Rate of Recovery of the Elastic Properties of a Certain Wire. .L. P. Sieg 



The Measurement of Musical Capacity C. E. Seashore 



A new series of measurements proposed to determine musical 

 memory, sense of rhythm, voluntary control of pitcli, the perception 

 of consonance, discrimination for intensity in addition to pitch discrim- 

 -' ination, methods of measurements, and results illustrated. 



Illuminating Engineering— A New Profession Arthur H. Ford 



(Introduced by Arthur G. Smith.) 



Some Remarks on the Solubility of Certain Salts in Water LeRoy D. Weld 



The Doppler Effect in Electrodeless Discharge Frank F. Almy 



Some Laboratory Apparatus in Elementary Physical Measurements 



Frank F. Almy 



The Action of Epinephrin Upon the Muscle Tissue of the Vein. . Jno. McClintock 



A Method for Studying Embryos as Related to Medical Work H. J. Prentiss 



The Peripheral Distribution of Cranial Nerves in Necturus Maculatus 



H. W. Norris and Margaret Buckley 



The Zoological Rank of Necturus as Indicated by the Origin and Distribution 



of Its Cranial Nerves H. W. Norris 



Notes on Methods for the Study of Amphibian Eggs and Larvae. .Albert Kuntz 

 The Development of Lymph Channels in Turtles by the Fusion of Mesen- 

 chymal Spaces Frank A. Stromsten 



Some Notes on Iowa Reptiles M. P. Somes 



