XVIII 
IOWA ACADEMY OP SCIENCES. 
“Variation in the Ray Flowers of Anthemis cotula and Other Com- 
posites.” — H. S. Fawcett. 
‘ ‘ Some Slime Moulds of New Mexico.” — T. H. Macbride. ■ , 
‘ ‘Report on Some Iowa Birds. ” — B. H. Bailey. 
“Different Methods of Determining Carbon Dioxide in Minerals and 
Rocks.” — Nicholas Knight. 
' ‘Flora of Hardin County.” — Morton E. Peck. 
“Three Color Projection. ” — C. F. Lorenz. 
“Some Notes on Certain Iowa Algae.” — Bruce Fink. 
“The Biology of Bacillus Violaceous Laurentius. ” — Grace Roode Rueda. 
“Plants New to the Flora of Decatur County, with Summary.” — J. P. 
Anderson. 
“The Morphology of Vallisneria Spiralis.” (Illustrated.) — R. B. Wylie. 
“A Problem in Municipal Warterworks for a small Town.” — J. L. 
Tilton. 
‘ ‘The Liliaceae of Iowa.”— T. J. Fitzpatrick. 
‘ ‘The Flowering Plants of Henry County.”— J. M. Lindly. 
‘‘The Storage Battery and [Switchboard at Simpson College.” — J. L. 
Tilton. , ■' 
“An Annotated List of Iowa Discomycetes. ” — Fred J. Seaver. 
‘‘Northward Extension of the Lake Valley Limestone.” — Charles R. 
Keyes. 
‘ ‘Geological Structure of the Jornada Del Muerto and Adjoining Bolson 
Plains. — Charles R. Keyes. 
‘ ‘Bisection of Mountain Blocks in the Great Basin Region . ” — Charles R. 
Keyes. 
‘ ‘A Laboratory Barometer.” — A. C. Page. 
‘ ‘Cohesion of Liquids and Molecular Weights.” — Edwin Morrison. 
‘ “Municipal Hygiene.” Parti. — C. O. Bates. 
“ Some Bacteriological Analyses of Railroad Water Supplies.” — L. H. 
Pammel and Estelle D. Fogel. 
“Growth and Pigment Production of Pseudomonas Janthina.” — Harry 
F. Watt. 
I 
