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Volume 47, Annual Issue (1940)

Front Matter

General Interest Articles

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In Memoriam: Robert Irwin Cratty; John James Bushnell; Edward Jacob Petry; Winifred Gilbert; Ross W. Harris; Edward K. Putnam; Mary Louise Sawyer
Ada Hayden, T. C. Stephens, Mrs. Edward J. Petry, Roy L. Abbott, William H. Pfeffer, U. A. Hauber, and H. S. Conrad

Research

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The Rose Crimson Rambler and Its Progenies
Clark D. Paris and T. J. Maney

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Thirty Iowa Liverworts
Henry S. Conard

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A Taxonomic Study of the Genus Galium in Iowa
Philip Jordon Leyendecker Jr.

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Vitamins in Plants
Norman Ashwell Clark

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Plants of Mahaska County, Iowa
Daniel W. Augustine

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A Chimeric Tulip
Karl A. Stiles

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A "Twin-Embryo" Abnormality in Maize
John E. Sass and George F. Sprague

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Evaluation of Quantitative Experiments
Melvin Mueller and R. W. Getchell

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Semi-Micro Analysis of Tungsten
Jack Hinman and W. C. Oelke

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The Diffusion Coefficient of Cupric Sulfate at 25°
W. G. Eversole and J. D. Peterson

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Preparation of Tyrosine from Steffen's Waste
Edward Bartow and Harland L. Wetzstein

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Cyanogen Chloride with Organomagnesium Compounds
George H. Coleman and Robert W. Leeper

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Ammonia and Organic Nitrogen Determinations in Stream Pollutions Studies
Jack J. Hinman Jr., W. Keith Weeber, and R. Rupert Kountz

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The Removal of Flourides from Water by Ionic Exchange
R. E. Benson, D. L. Porth, and O.R. Sweeney

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Plastics from Soybean Meal and Furfural
L. K. Arnold and A. D. Quackenbush Jr.

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Oxidation of 4-Acyloxy Derivatives of Cinnamic Acid
Victor S. Webster and L. Chas. Raiford

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Direct Syntheses of Amides From Long-Chained Aliphatic Amines
Byron A. Hunter, William I. Harber, and H. Gilman

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Pyrolidines from Primary Amines
George H. Coleman, Chris C. Schulze, and Harold A. Hoppens

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Iodination of Anisole
Ralph Holch and J.B. Culbertson

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Permian Ammonoids from Southernmost Mexico
A. K. Miller and W. M. Furnish

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Permian Ammonoids from Greenland
A. K. Miller and W. M. Furnish

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Glacial Marks
Arthur Goshorn

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A Note on a Bolzano Function
Marian E. Daniells

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Exponential Operators
Fred Robertson

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Studies in the Properties of Suspensoids
Melvin D. Clark and Barbara J. Selzer

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Distribution in Angle of Alpha Particles from Li7 + H1
V. J. Young, G. J. Plain, W. B. McLean, and A. Ellett

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The Resonance in the B-P-a Reaction
W. B. McLean, V. J. Young, W. L. Whitson, G. J. Plain, and A. Ellett

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Distribution on Angle of Alpha Particles from F19 + H1
A. Ellett, W. B. McLean, V. J. Young, and G. J. Plain

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A Study of Compensation
Miriam G. Zugmeier and A. R. Lauer

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Studies of Eastern Iowa Spiders
Karl A. Stiles and Virginia G. Stevens

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Objective Studies of Electrification in Mirotechnique
Karl A. Stiles and Douglas W. Eastwood

 

Heredity and the Etiology of Tuberculosis
Karl A. Stiles and Thomas N. Stewart

Back Matter