Theses and dissertations from Iowa State University, University of Iowa and University of Northern Iowa. This collection does not include many theses and dissertations which are available in print only. To browse individual collections, go to:

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Theses/Dissertations from 1936

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Efficiencies of petroleum distillates as cooling media for internal combustion engines , Richard Seymour Apple

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Oxidation, reduction and hydrolysis of wool keratin , Mary Mildred Barr

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The dielectric constant and the specific conductance of pure liquid hydrogen sulphide , William Glenn Bickford

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A conductometric analysis of Portland cement pastes and mortars, and some of its applications , Warren Benefield Boast

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Syntheses of certain furan and difuryl derivatives , Ellis Vincent Brown

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Physiological studies and classification of the butyric acid - butyl alcohol bacteria , Russell Wilfrid Brown

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The relative importance of heredity and environment in determining the variations in weaning weights of Poland-China pigs , James Humphreys Bywaters

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The effect of a gas film on metal surfaces used for electron recording , Morton Alden Countryman

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The animal parasites of the woodchuck (Marmota monax L.) with special reference to the Protozoa, Hubert Branch Crouch

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Cytological studies of certain apple varieties and their seedlings, with special reference to their value as stocks , Samuel Wheeler Edgecombe

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The influence of various procedures on the flavor and keeping quality of butter , N. E. Fabricius

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Rearrangements in the furan series , Raymond A. Franz

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On the penetration of certain arsenical compounds into the body of the American cockroach, Periplaneta americana (L) , Leon Conrad Glover

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An investigation of codling moth populations as they affect control experiments , Theodore Roy Hansberry

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The influence of certain bacteria on the ripening of Cheddar cheese made from pasteurized milk , Henry Christian Hansen

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Stresses in moderately thick rectangular plates , Archie Higdon

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[Beta]-hydroxyfurans and some of their biological properties , Willard Max Hoehn

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Phalaenidae of Mississippi: morphology of the genitalia , Ross Elliott Hutchins

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A study of the graphitization of iron carbide , Frank Ireland

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The relationship between flavor deterioration in butter at 210C and keeping quality at lower temperatures , Daniel Herman Jacobsen

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The application of conformal trasformation theory to the determination of stress problems , Vernon Peter Jensen

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Taxonomic and biological studies on the Miridae of Mississippi (Hemiptera) , Horace Greely Johnston

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The development, properties and action of inhibitors of plant pathogenes , George Clarence Kent

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The effectiveness of the domestic spark arrester in the control of roof fires, Frank Bristol Lanham

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Site factor variations and responses in temporary forest types in northern Idaho , Julius Ansgar Larsen

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The parasitism of Colletotrichum lagenarium (Pass.) Ell. and Halst. , Duke Vivia Layton

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A study of some lipolytic microorganisms isolated from dairy products , Henry Foltz Long

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Nuclear history and host relations of Sclerospora graminicola (Sacc.) Schroeter of species of Setaria , Eugene Stowell McDonough

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Inheritance of quality and quantity of oil in flax in relation to other plant characters , William Grant McGregor

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Some kinematic and dynamic studies of rigid transport wheels for agricultural equipment , Eugene George McKibben

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Catalytic hydrogenation of furfural in the liquid phase at various temperatures and pressures , Ralph Edgar Menzel

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The decomposition of some humus-forming materials in soils , Harvey Clifford Millar

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A revision of the genus Diastatops and a study of the leg structures of related genera , Basil Elwood Montgomery

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The electron-sharing ability of organic radicals: the terpenes and related compounds , Perry Alldredge Moore

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A study of a factor inhibiting the growth of Streptococcus lactis , Frank Eugene Nelson

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Physiology of the lactic acid bacteria , Milton Ephriam Nelson

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The influence of temperature and humidity upon the growth of chick embryos in a machanically ventilated incubator, Robert Penquite

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The effect of phosphate fertilizers on soil reaction, John Booth Peterson

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Water deprivation and the lethal action of certain stimulants and depressants in Mus Norvegicus albinus , Henry Earl Rath

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The endogenous phases of the life cycles of Eimeria nieschulzi, Eimeria separata, and Eimeria miyairii coccidian parasites of the rat, Robert Lee Roudabush

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A method of quantitative chemical analysis using a photon counter, Willard Roland Ruby

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Tests and application of a new type reinforced tile floor, Albert Jacob Sailer

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The chemical transformation of aliphatic acids in the course of the butyl-acetonic fermentation, Gerrish Monroe Severson

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The influence of the phosphate-calcium ratio and of humates of iron on chlorosis in Lemna, Dale Harold Sieling

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Some physiological properties of benzofuran and dibenzofuran derivatives, Earl Westley Smith

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Home manufactured "loose-fill" insulation, Roy Ernest Spriggs

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Bacteriological studies on some defects of cream cheese spreads, James Bryan Stine

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The occurrence of phospho-glyceric acid in the bacterial dissimilation of glucose, Robert William Stone

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I The relative aromaticity of furan II Heavy hydrogen in some naturally occurring organic compounds and mixtures, James Madison Straley

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Insects as vectors of yellow dwarf, a virus disease of onions , Herman Douglas Tate

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Some factors influencing the growth and respiration of rhizobium , David Wynne Thorne

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A nutritional disease of chicks caused by feeding dried eggs , Wilbur Campbell Tully

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Furan mercurials and derived types , Robert John VanderWal

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Furanic and related heterocyclic dyes and colored molecules , Marian Weston VanEss

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Dibenzofuran and phenothiazine derivatives , Paul Raymond VanEss

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Studies on Lactobacillus cultures that actively coagulate milk , Harry Howard Weiser

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Genetics of resistance to bacterial wilt in maize , Edwin John Wellhausen

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A study of the piezo-electric oscillations of quartz plates , Robert Granzow Wilson

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Genetical and histological studies of fruit size and shape in the tomato, Albert Franklin Yeager

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Certain housing conditions and activities of Negro girls enrolled in federally aided schools in Texas as one index of their educational needs, Ada Yerwood

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Relative reactivities of organoalkali compounds, Richard Valentine Young

Theses/Dissertations from 1935

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The firebrat, Thermobia domestica (Packard), and its gregarine parasites , James Alfred Adams

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The heat capacity of iron carbide , Ralph Verne Andes

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The yield response of maize hybrids to different levels of soil fertility and the physiological response of the inbred lines and their hybrids to phosphorus, Thomas Joseph Arceneaux

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The effect of high frequency excitation upon the intensities of spectral lines , Charles Herbert Bachman

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The polysaccharides of the vegetative tissues of maize , Calvin Guinn Barr

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The design and test of a new type reinforced tile floor, Charles T. Bridgman

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Blackening of photographic materials by means of low voltage cathode rays , Allan Reedy Brown

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Factors influencing the pathogenicity of the pythiaceous parasites of sugar beets (Beta vulgaris L), alfalfa (Medicago sativa L), and flax (Linum usitatissimum L) , Walter Frederick Buchholtz

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The resolution of alpha-substituted pyrrolidines , Helen J. Bulbrook

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The dissociation constants and rotations of some alpha-substituted ethylamines , J. Marvin Burch

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Theoretical and model analyses of the bridge as a space structure with one concentrated load on one truss , Ho-Cheng Chai

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A study of 2, 3 butylene glycol and its derivatives , Charles H. Chappell

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The effects of liming on the liberation of potassium in some Iowa soils , Hartzell C. Dean

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A study of the effect of electric current on certain crop plants , Charles S. Dorchester

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A toxicological investigation of nicotine on the goldfish and the cockroach , L. O. Ellisor

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The comparative anatomy of the leaf of Brassica juncea (L.) Coss. and its broadleaved and curled varieties ..., Willa Juanita Ewing

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The preparation of erythrose and some of its derivatives , George E. Felton

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X-ray extinction in piezo electric crystals , Walter Alexander Fraser

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The genetic basis for resistance and susceptibility to Salmonella aertrycke in mice , Herbert Ottmar Hetzer

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The value of several organic compounds as contact and stomach poisons for certain insects , John Franklin Kagy

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The storage and distribution of copper and iron in the rat , Helma Louise Hutton Keil

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The physiological action of some furan compounds , Willard H. Kirkpatrick

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Feasibility of ceramic products as trickling filter media, Ralph H. Luebbers

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The relation of root reserves to cold resistance in alfalfa , Jesse Jarue Mark

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The relative reactivities of some organometallic compounds , Kenneth E. Marple

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The prevention of seedling blight of Zea mays L. by autotoxins of Diplodia zeae (Schw.) Lév. and the relation of mesocotyl infection to crown invasion , George Lee McNew

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An investigation of the stresses and deflections of loaded retangular plates on elastic foundations, Glenn Murphy

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Physiological studies on rhizobium IV. Utilization of carbonaceous materials , Oren Robert Neal

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The role of pine oil in cattle fly sprays , Allen Mobley Pearson

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A study of the braced rafter roof, George E. F. Pickard

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The relative importance of heredity and environment in determining the butterfat production of cows in Iowa cow testing associations, Mogens Munk Plum

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The dissimilation of carbohydrates by the colon-aerogenes bacteria, Howard Reynolds

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Gastric digestion of soybean flour when used as a substitute for cows' milk in feeding dairy calves , LaVan Neill Shoptaw

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The quantitative toxicity of five typical contact insecticides to several species of insects, William Aldrich Simanton

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Studies on growth and reproduction in the rat: I, The value of different cod liver oils for reproduction; II, The value of certain individual foods as sources of vitamins B and G for growth, reproduction and lactation , Howard O. Smith

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Dissimilation of carbohydrates by bacteria of the genus Aerobacillus, Grant Lee Stahly

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The effect of the chemical and physical environment upon the fermentative activity of zymin , Homer E. Stavely

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Changes in the oxidation-reduction equilibrium in soils as related to the physical properties of the soil and the growth of rice, Madison B. Sturgis

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An investigation of types or strains of the mosaic virus of sugarcane in Louisiana, Eaton M. Summers

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Studies on insect hemolymph, with special reference to some factors influencing mitotically dividing cells, Oscar Ernest Tauber

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Influence of growth temperature on the thermal resistance of some aerobic, spore-forming bacteria from evaporated milk, Donald Richard Theophilus

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Selectivity of boric acid media in the colon group , Reese Haskel Vaughn

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The oxidation, reduction, and hydrolyses of silk fibroin , Eunice Chamberlin Walde

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Inheritance and correlation of shape, size, color and time of maturity in the watermelon (Citrullus vulgaris Schrad) , Leslie Maurice Weetman

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Calculation of the ionization potential of lithium , Charles P. Wells

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I The production of paper from cereal straws II Utilization of agricultural wastes for production of miscellaneous fabricated materials , Edward Richard Whittemore

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An external index of egg quality, Harold L. Wilcke

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Inbreeding and other breeding practices used in developing the Hereford breed of cattle in the United States , Oliver Siralvo Willham

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The utilization of time by pupils in certain high school foods classes taught by student teachers ..., Glee Jane Willoughby

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The reproductive performance of milk goats fed a ration deficient in vitamin E , John Lincoln Wilson

Theses/Dissertations from 1934

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Inheritance of tree form in certain progenies of cross-bred apple seedlings, Simeon James Bole

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A study of the biology and control of the pea weevil, Bruchus pisorum L (Coleoptera, Bruchidae) in the Palouse area of Idaho and Washington , Tom A. Brindley

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The use of polymers from furfural in the fabrication of molded products , Richard Wedge Bruins

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Quantitative studies on the formation of xylose from pentosan-containing materials , Loren Conrad Bryner

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Studies on thermophilic bacteria from commercial cane syrups , William E. Burns

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Some correlations between hypnotic action and chemical constitution , William Glen Bywater

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The reversible splitting of organomercuric cyanides with hydrogen chloride , Edward Carr

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Some physico-chemical studies of organometallic and furan compounds , Willard E. Catlin

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Anthracnose of grain sorghum caused by Colletotrichum lineola corda , Hung Kwei Chen

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Some of the factors influencing the infection and pathogenicity of Ustilago zeae (Beckm) Unger on Zea mays L. , Glen Norton Davis

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Studies on the genus Aerobacter , Samuel S. Epstein

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Studies on vitamins B and G in growth and lactation in the rat: A, The effects of extracts of vitamins B and G; B, The distribution of vitamin G , James Floyd Feaster

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The effect of the solvent upon the polar properties of organic compounds , Lyle David Goodhue

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The relation of the size of the infective dose to number of oocysts eliminated, duration of infection and immunity in Eimeria miyairii infections in the white rat , Phoebe Rebecca Hall

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Causes of slow acid production in butter cultures , Louis Albert Harriman

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Plastics from high pentosanocellulosic material , William Donald Harris

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A morphological study of the structure and development of the stem and ears of Zea mays L. , Arthur Leroy Hershey

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The effect of various operating conditions upon electrical brush wear , Victor Peter Hessler

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Inheritance of rest period of seeds and certain other characters in Arachis hypogaea, L, peanut , Fred Harold Hull

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The biochemistry of the production of 2,3-butylene glycol by fermentation , Anson R. Kendall

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The effect of the ingestion of irradiated yeast, molds, and ergosterol on the antirachitic potency of ewe's milk , William Gordon Kirk

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The effect of certain bacteria on the ripening of cheddar cheese made from pasteurized milk , Clarence Bronson Lane

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The effects of calcium chloride upon the hydrolysis of pure compounds of cement , George Henry McIntosh

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The ionization constants of some secondary amines in methanol , Charles Louis Mehltretter

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Factors influencing malformation of the leg bones of growing chicks , Thomas Theodore Milby

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The free energy of furfural and some of its derivatives , Pharis Miller

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Monograph of the Collembola of Iowa , Harlow Burgess Mills

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The production of butyl and isopropyl alcohols by fermentative processes , Oiven Lloyd Osburn

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A study of methods of determining the numbers of yeasts and molds in butter , Elliott Hill Parfitt

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The prevention of roof fires by the use of spark arresters, Frank Westen Peikert

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Influence of rations and storage on the physical characteristics of eggs, Flavel D. Perry

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The influence of certain soil types, fertilizer treatments, and seasonal conditions on the length and strength of cotton fiber, Otis Alston Pope

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Factors affecting the growth of range cattle in semi-arid regions, Diederick Johannes Schutte

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Some of the physical-chemical properties of hog cholera virus: I Filterability of hog cholera virus as affected by the hydrogen ion concentration II The migration of hog cholera virus when subjected to electrophoresis III Experiments on the attenuation of virus and the production of immunity to hog cholera, Louis Harold Schwarte

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The genus Eucerceris: its morphology and biology, with a monograph of the genus (Hymenoptera:Sphecidae), Herman Austin Scullen

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Unfrozen water in apple shoots as related to their winter hardiness, Arvil Lane Stark

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The butyl-acetonic fermentation of the sugars with special reference to xylose , Leland Alfred Underkofler

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Studies on embryonic lethal characters in the domestic fowl , Charles W. Upp

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The production of alcohols by thermophilic fermentations , Matthew Kermit Veldhuis

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Studies on the action of sublethal percentages of illuminating gas , Isabella Riggs Williams

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The pathological relationship between the host and parasite in varieties and strains of watermelons resistant to Fusarium niveum E F S , Joseph Jay Wilson

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The physiology of the propionic acid bacteria , Harland Goff Wood

Theses/Dissertations from 1933

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Statics of special types of homogeneous elastic slabs with variable thickness , Ernest Willard Anderson

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The design of barn roof trusses to resist wind pressures, Harold A. Arnold

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The design of a masonry arch barn roof, Henry J. Barre

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Agricultural experiments in Iowa during the Civil War decade, Leila Mae Bassett

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A morphological study of the male genitalia of various genera of bees , D. Elden Beck

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The cytology and histology of the root nodules of some leguminosae , Fredrick Wilhelm Bieberdorf

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The determination of the thermionic work function of nickel by a new method , Robert McNeil Bowie

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Beta-substituted furans , Robert R. Burtner

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The development of direct marketing of hogs in Iowa , Elwyn Loomis Cady

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Condensation reactions of furfural and its derivatives , Nathaniel Oglesby Calloway

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Training, experience and salary of negro home economics teachers in secondary schools in Texas ..., Willie Campbell

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Studies on chlorine disinfection: I, Effect of concentration temperature and reaction on the germicidal efficiency of chlorine compounds , Davd Berry Charlton

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I. Wind damage to Iowa farm buildings, II. The design of the bent rafter to resist wind loads, Elmer F. Clark

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The action of lipolytic bacteria on some simple tri-glycerides and some natural fats , Mervyn Avery Collins

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The relation of certain preparation conditions to the characteristics of copper oxide rectifiers , Charles Donald Crosno

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Mechanism of Barkhausen-Kurz oscillations , Lumir Frank Dytrt

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The influence of environmental factors on the growth of the corn plant under field conditions , Harold Frank Eisele

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The effect of injury in imitation of hail damage on the development of corn , John Crosby Eldredge

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The effect of petroleum oil sprays on insects and plants , Milton Dyer Farrar

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The effect of hypertonic sugar solutions on the thermal resistance of bacteria , Arthur Cecil Fay

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I. Reconnaissance erosion survey of the Brazos river watershed, Texas; II. A new type of installation for measuring soil and water losses from control plots , H. V. Geib

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An investigation of the penetration of pyridine, piperidine and nicotine into the bodies of insects , Louise Haas Glover

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A study of chlorine sterilizing compounds: 1, Relationship between pH and oxidation potentials , Arthur Paul Hellwig

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The role of inorganic substances and amino acids in the regeneration of hemoglobin in the rat , Havard Lawrence Keil

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Some properties of the soil solution and the colloids in certain Iowa soils , Gordon Beverly Killinger

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Economic studies of Cochliomyia macellaria Fab with special reference to the prevention of myiasis of domestic animals , Ernest William Laake

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The design and test of a gathering mechanism for a corn picker, George Ross Louthan

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The influence of copper on the graphitization behavior of white cast iron , Louis Lykken

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Physiological and toxicological studies on insects. Part I. Respiratory responses of adult orthoptera to certain gases. Part II. Toxicity of petroleum oil mixed with certain chemical compounds to larvae of Carpocapsa pomonella linne , Edward Rawson McGovran

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A study of the Corynebacteria (diphtheroids) associated with diseases of domestic animals , Ival Arthur Merchant

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The determination of the rates of graphitization in tungsten manganese white cast irons , William Alvin Pennington

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Recording of low voltage cathode rays on metal films , Joseph Bion Philipson

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The comparative calcium and phosphorus retention of pigs fed rations supplemented with limestone, bone meal, and "Dicapho", John Melville Ramsbottom

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Physiologic factors affecting the germination and growth of seed corn , Joseph Lee Robinson

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The distortion of current and voltage waves on transmission lines , Eugene Washburn Schilling

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Farm building losses in Iowa due to wind, Marvin Frederick Schweers

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Genetic investigations of the physiological response of inbred lines and crosses of maize to variations of nitrogen and phosphorus supplied as nutrients, Stuart Newton Smith

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The biochemistry of sluggish butyl-acetonic fermentations, Donald Fay Starr

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Pseudomonas rhizogenes (R. B. W. K. & S.) N. comb.; its host relations and characteristics, Ross Frisbie Suit

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The alkaline oxidation of lignin , Arthur William Walde

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The metabolism of some nitrogen-fixing Clostridia , William Hillman Willis

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A magneto-optic method of determining the vitamin content of various substances , Gerrit Martin Wissink

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Some quantitative studies of organometallic compounds, Erwin Arthur Zoellner

Theses/Dissertations from 1932

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The production of gum by certain species of rhizobium , Dean Albert Anderson

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An analysis of Iowa's rural fire losses for 1930 and 1931, Earl D. Anderson

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Decomposition of organic matter and responses of citrus seedlings in Norfolk sand, Charles Edward Bell

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I. The manufacture of artificial zeolites. II. The control of zeolite water softeners, Paul Graham Bird

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A statistical study of the relation of sex, breed and live measurements to carcass weights in swine , A. E. Brandt

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Some chemical and biological effects of cyanamid and certain other nitrogen fertilizers on various Iowa soils , Mark H. Brown

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The effect of an electric field on the production of carbon black , Oral A. Brown

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Relapse and associated phenomena in the haemoproteus infection of the pigeon , George Robert Coatney

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A study of the starch-digesting and sugar-forming enzymes of wheat , Mattie Creighton

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Physiology, morphology and growth responses of gladiolus corms as influenced by storage temperatures , David C. Fairburn

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The production of furfural from concentrated solutions of xylose , Richard Lindley Foster

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The content and organization of proposed general service courses in dairy production for agricultural college students , Laurence B. Harmon

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Thermogenesis of certain hay-inhabiting fungi , James William Harrison

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Inquiries into the causes of blind wood in roses , Donald S. Hubbell

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The relationships of a lipolytic organism to rancidity of butter, Ralph Victor Hussong

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The reaction of liquid hydrogen sulfide and hydrogen persulfide on organic compounds, Walter Bernard King

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Life expectancy of physical property based on mortality laws, Edwin Bernard Kurtz

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A park and recreation plan for the city of Ames, Iowa, Jerome C. Miller

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The digestibility of milk in vivo as affected by certain physical treatments , Francis N. Mortenson

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The correlation between the organisms found microscopically and the bacteriological deterioration of butter , John Albert Nelson

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The available phosphate content of soils and some factors affecting it, Samuel Shockley Obenshain

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The microflora of churns and its importance in the deterioration of butter , Harold Cecil Olson

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Movement of fertilizers in Carrington loam, Oliver Enoch Overseth

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Home activities and housing conditions of Negro girls in the rural secondary schools of Virginia as an index to their curricular needs ..., Anna Elnora Owens

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A valuation of the industrial property of the Amana Society, Charles G. Parsons

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The storage behavior of apples as influenced by nitrogen fertilization and storage temperature, Homer Henry Plagge

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Fermentation of some sugar derivatives, Clarence Howard Rayburn

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Development of the vocational home economics program for negroes in Mississippi ..., Addie Lee Ross

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Development of the vocational home economics program for negroes in Mississippi ..., Addie Lee Ross

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An investigation of the Lygus species which are pests of beans (Hemiptera, Miridae) , Wesley Earl Shull

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Histological studies of the development of the root and crown of alfalfa, Austin O'Neil Simonds

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Flower bud development in the Concord grape, John Cornelius Snyder

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Home economics in negro secondary schools of Kentucky ..., Grace Mae Sullivan

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Organolead compounds, Edmund B. Towne

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Pathogenicity, host response and control of Cercospora leaf-spot of sugar beets , Edgar F. Vestal

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The effect of arsenic as used in the control of grasshoppers upon birds , Fred E. Whitehead

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Furfural and some of its derivatives, George F. Wright

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The Winogradsky spontaneous culture method for determining certain soil deficiencies , Arthur Wesley Young

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Pathological and physiological effects of Bacillus tracheiphilus E.F. Smith on species of cucurbitaceae, T. F. Yu

Theses/Dissertations from 1931

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Some of the relationships among the organisms in butter cultures , Merle Porter Baker

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The pathogenicity and seasonal development of Gymnosporangium in Iowa , Donald E. Bliss

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Factors affecting experimental error in field plot tests with corn , Arthur A. Bryan

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The growth of cuttings as influenced by their chemical composition , Valeriano C. Calma

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I. An X-ray investigation of the iron-copper system II. A study of the corrosion of galvanized sheet iron , James Hal Carter

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The effect of substitution on the electron sharing ability of the two- and three- carbon radicals , Otis D. Cole

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Studies on the sterilization of solutions of glucose and sucrose , Wendell Burnham Cook

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The preparation of per acids and their salts , Robert Roy Coons

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Insecticidal action in the nitrogen heterocyclics , Lyman C. Craig

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Amount of waste, time required and cost in the preparation of fresh vegetables for institutional use ..., Geneva Pensola Crouch

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A study of crosses between Trebi and three smooth-awned varieties of barley , Pedro A. David

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Bacteriological studies on butter showing surface taint , Herbert Andrew Derby

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A study of the migratory habit of the Mexican cotton boll weevil (Anthonomus grandis Boh.) , E. W. Dunnam

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Apple breeding : the effect of parentage on the relative vigor grade and correlation relationships of cross-bred apple progenies ..., Samuel Wheeler Edgecombe

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Problems related to the commercial production of levulose, Jack Waldo Eichinger Jr.

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Study on the utilization of xylose , Hsi Ch'ou Fang

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Some sociological aspects of the coal mining industry in Iowa with special reference to Monroe County, Wilford Herman Fasold

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Biochemical relations between iron and manganese, and organic matter in the growth of the green plant , Claude L. Fly

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The influence of the nature of applied wastes on the fauna at different layers of a trickling filter , William Wesley Frye

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Studies on agar digesting bacteria , Harry Edward Goresline

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Abnormal reactions of organometallic compounds , Stanton Avery Harris

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The design of a plant for the production of insulation board from agricultural wastes and cost data on this process , Charles Earl Hartford

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The physiological action of cystinyl peptides and guanidine derivatives , H. James Harwood

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The effects of molybdenum and chromium on the malleablization of white cast iron , Everette Lee Henderson

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Certain physiological factors involved in the curing and storage of hay , Edwin Ray Henson

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Some effects of home economics training upon the home practices of Negro families in Texas ..., Mary Hunter

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Some effects of home economics training upon the home practices of Negro families in Texas ..., Mary Hunter

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Studies in vitamin A technic , Margaret House Irwin

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The genus Tachypterellus with a special study of T consors cerasi, new subspecies, a cherry pest in Colorado , George Milton List

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Physiological studies on the effect of flies and fly sprays on cattle , Roy Melvin

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The volatile acids formed from citric and lactic acids by streptococcus citrovorus and streptococcus paracitrovorus , Michael B. Michaelian

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I. Some factors affecting the production of insulation board. II. The development of the commercial production of refrigeration board and pressboard, Theodore R. Naffziger

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The fermentation of levulose by some bacteria of the genus Aerobacillus, Roger Patrick

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Factors which influence girls against election of home economics in West Virginia state college, Mae Phillips

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Factors which influence girls against election of home economics in West Virginia state college, Mae Phillips

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Insecticidal and chemical studies of pyrethrum and kerosene extracts of pyrethrum, Henry Howe Richardson

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Production of yeast growth stimulants by molds on various media , H. H. Schopmeyer

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The inheritance of resistance to Salmonella aertrycke in various strains of mice , Ralph G. Schott

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The causes and the prevention of accidents to the operators of farm machinery in the United States and Canada, Graham Lawson Shanks

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The effects of various nitrogen and phosphorus compounds on the growth of Azotobacter and the fixation of nitrogen , Leonard Garnett Thompson Jr.

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Some factors involved in the storage of corn in tight-walled bins, Walter Gilling Ward

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Studies on the structure of the chloraloses , Anne Elizabeth White

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Band spectra produced by certain explosion mixtures , Harley A. Wilhelm

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Tractor track efficiency, Ira Lawson Williams

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Some studies on the Escherichia-Aerobacter group of bacteria in dairy products, Maurice Wade Yale

Theses/Dissertations from 1930

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Studies on sulfofication and the sulfofying bacteria , Dionisio I. Aquino

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Cornstalks as a raw material for paper production , Lionel K. Arnold

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A study of housing equipment for market swine production, Harold Theodore Baker

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The chemical action of Aerobacter faeni on xylose and on sucrose , Calvin R. Breden

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I. Furfural and some of its derivatives; II. The relative reactivities of some organometallic compounds of group II elements , Robert E. Brown

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The application of furfural and its derivatives to the manufacture of plastics , Paul Fastenau Bruins

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Corn-boring insects of Iowa: with special reference to the stalk borer, Papaipema Nebris (Gn) and the four-lined borer, Luperina Stipata (Morr) , George C. Decker

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Furfural and some of its derivatives , Joseph B. Dickey

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The effect of soil reaction on the growth of tomatoes and lettuce and on the nitrogen, phosphorus, and manganese content of the soil and plant, Emery Myers Emmert

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The effect of chromium on white cast iron, Clarence D. Foulke

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Reactions of inorganic compounds with liquid hydrogen sulfide, Harlan Preston Guest

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Chemical sterilization with alkalies, James Roger Hall

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Physiological behavior of Grimes Golden apples in storage, I. Respiratory intensity, II. Catalase and oxidase activity, Paul Lewis Harding

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Part I. The effect of ultraviolet light upon some organic compounds, Part II. The synthesis of amino compounds, Lloyd L. Heck

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Furfural and some of its derivatives, Amiot Prichard Hewlett

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The determination of the effect of manganese and sulfur on the malleablization of white cast iron, Arnold P. Hoelscher

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Composition and structure of the cornstalk as related to its industrial utilization, Florence Everett Hooper

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Oospore and conidial response of species of Sclerospora, Mary Frances Howe

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A monograph on the protozoa of the large intestine of the horse, Ta-Shih Hsiung

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The electron-sharing ability of organic radicals: organic mercurials, Iral Brown Johns

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Life history and pathogenicity of Peronospora schachtii Fuckel on beets (Beta vulgaris L), Lysle Douglas Leach

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Effect of salts on alkali disinfection , Omar Edwin Lowman

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Problems related to the commercial production of levulose, James H. McGlumphy

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Some effects of sorghums on soils and crops , Arthur David McKinley

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Experiments on the biology of infusoria inhabiting the rumen of goats , Helen A. Mowry

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The increase in lethal action of some fungicides to the spores of species of Phytophthora due to changes in chemical potential , Bhalchendra B. Mundkur

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Physiologic specialization in Puccinia coronata avenae (Corda) Eriks and Henn , Hickman Charles Murphy

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The nutritive value of cereals and its relation to processing , Thomas B. Parks

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The determination of the nitrate assimilating power of soils and some nitrate fertilization studies , Ray A. Pendleton

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Analytical studies on the utilization of the cornstalk , Charles J. Peterson

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Studies on Rhizobium meliloti and Rhizobium japonicum , George Gordon Pohlman

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The resistance and physiological reaction of strains of cucumbers to mosaic , R. Howard Porter

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The development of synthetic lumber from cornstalks , Roger Wolcott Richardson

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I. Auximones and the growth of the green plant; II. Organic matter and the growth of Lemna , Emery M. Roller

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Time of bud differentiation in the Dunlap strawberry , J. C. Schilletter

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A study of caramel color , John B. Shumaker

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Reproduction and lactation on simplified diets, Milton Wight Taylor

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The electron-sharing ability of organic radicals, orthochlorobenzyl radical, Frank E. Ware

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Diet in relation to reproduction and to rearing of young rats, Paul D. Wilkinson

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A study of bovine coccidiosis, Irl Donaker Wilson

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Efficiency studies on concrete paving operations, Y. F. Zung

Theses/Dissertations from 1929

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Studies in electrodialysis of soils , Arthur Otto Alben

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An historical and sociological study of a rural town in central Iowa, Minne Elisabeth Allen

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A soil study of the Mont Alto state forest, Pennsylvania , John T. Auten

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The adaptation of the sodium and potassium electrodes to biological measurements , Emerson W. Bird

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I. The quinhydrone electrode and the soil reaction; II. The gravimetric method for the determination of carbonates in soils; III. Application of the quinhydrone electrode to investigations on base exchange in soils , Emerson R. Collins

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A. Studies on the capture of free organic radicals, B. New reactions of oxalic acid and some of its derivatives, Robert Enos Fothergill

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Some factors affecting the growth of Penicillium roqueforti in cheese, Norman Shirley Golding

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Studies on the insect fauna of Iowa prairies, George Oscar Hendrickson

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Studies on the inheritance of resistance to the danysz bacillus in the rat, M. R. Irwin

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A Some rearrangement reactions of organomagnesium halides B New organolead compound in anti-knock studies, James Emory Kirby

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The nature and causes of the growth of Iowa land values, Adrian H. Lindsey

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Some of the factors influencing the growth of molds in butter , Harold Macy

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Biological studies of Pseudomonas tumefaciens Sm & Town and fifteen related non-pathogenic organisms , M. K. Patel

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Proteolysis by Streptococcus lactis , Vishram H. Patil

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Some dietary factors affecting lactation in the albino rat , Louise Jenison Peet

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The pathogenicity of Fusarium niveum Efs and the development of wilt resistant strains of Citrullus vulgaris Schrod , Donald R. Porter

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A chemical and microbiological study of Lufkin fine sandy loam in relation to productiveness , Elbert Brunner Reynolds

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Organolead compounds, Jack D. Robinson

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Studies on pulps produced from cornstalks and sugar beet wastes , Julius LeVerne Schneider

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Soil erosion: with emphasis on causative factors, Lawrence Henry Schoenleber

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The rate of growth of worker, drone, and queen larvae of the honeybee, Apis mellifera Linn, Henry A. Stabe

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The action of citric acid and its salts in sugar solutions, Julian Harrison Toulouse

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I. Studies on the production of oxalic acid from corn stalks and cobs; II. Studies on corn stalk cellulose, Henry Albert Webber

Theses/Dissertations from 1928

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Reactions of organic compounds with liquid hydrogen sulfide , Reuben Waldemar Borgeson

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Fruiting habit of the cotton plant , Thomas Stephen Buie

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Method of rendering concrete more resistant to the attack of sulphate solutions , George W. Burke

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The fermentation of cornstalks and their constituents: I, studies on the pectin-fermenting bacteria , Lloyd Allen Burkey

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Pathogenicity and cultural behavior of Ustilago zeae from different localities, Auther Hamner Eddins

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I. The causes of incomplete graphitization near the surface when white cast iron is malleableized, II. The production and prevention of embrittlements in malleable castings by heat treatments below the critical range, Hyrum Edward Flanders

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Physiological and chemical studies upon the milkweed (Asclepias syriaca L), Fisk Gerhardt

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Catalase, oxidase and ionizable constituents of the tomato as influenced by the soil reaction, Ernest Straign Haber

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Studies on nicotine, William Robert Harlan

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A monographic study of the hemipterous family Nabidae as it occurs in North America, Halbert Marion Harris

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Base replacement as the cause of adsorption of dyes by soils, Wilbur Lee Hoff

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The determination of the availability of certain plant food constituents by electrodialysis, Harry Humfeld

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Correlation studies with inbred and crossbred strains of maize, Merle Truman Jenkins

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The biological determination of glucose, Amy Marle LeVesconte

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A conductivity method for the analysis of formic acid in the presence of the volatile fatty acids produced by fermentation , Edmond E. Moore

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Solutions studies on carbon dioxide: I. The variation of hydrogen-ion concentration with carbon dioxide pressures above one atmosphere , Marjorie B. Moore

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I. Some effects of manganese sulfate and manganese chloride on nitrification; II. The isolation of some nitrifying organisms , Daniel Hans Nelson

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Some factors influencing the pathogenicity of Ustilago zeae (Beckm) Unger , Gustav A. Platz

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Infection studies of Diplodia zeae and control of seedling blights of corn , Walter P. Raleigh

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A morphological and cytological study of the early stages of sexual reproduction in alfalfa , Robert G. Reeves

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A study of the zeolitic method of water softening , Frank Ray Riley

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Genitalia of pentatomidae , Oscar Waldemar Rosewall

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Reactions of liquid hydrogen sulfide on metals and oxides , Sitaram D. Satwalekar

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Specific effects of feeding different amounts of potassium iodide and salt on the character of the wool production of breeding ewes and their lambs, Maynard Goldman Snell

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Inheritance of certain seed-coat colors in soybeans (Soja max), Ralph T. Stewart

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Studies in home canning, Gertrude Sunderlin

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Physiological action and chemical constitution: new local anesthetics, Clarence C. Vernon

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Clarification of milk for American cheddar cheese, G. Wilster

Theses/Dissertations from 1927

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Studies on the toxicity of hydrogen cyanide , James B. Allison

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Supplements to a milk diet for dairy calves , Clawson Y. Cannon

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The properties of starch with relation to time of formation of starch gels , Oliver Wendell Chapman

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Studies with glucose derivatives: Part I, The digestion of pectin and methylated glucoses by various organisms; Part II, The structure of chloralose derivatives , Harold W. Coles

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The relation of some physical and chemical properties of oil emulsions to their insecticidal efficiency, Lester Lamar English

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Some chemical and biological effects of sulfur fertilization, James Milton Fife

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The preparation, acid hydrolysis and magnetic transformation of iron carbide , Waite Philip Fishel

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Part I. Some aliphatic local anaesthetics, Part II. The physical constants of organomagnesium halides, Leon C. Heckert

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Wool studies with Rambouillet sheep, Fred S. Hultz

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A study of some of the lactobacilli, Lincoln Spencer Hyde

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I The heat of formation of cementite as electrolyzed from a pure iron carbon alloy of eutectoid structure and composition II The signicicance of pH determinations in relation to hydrogen ion concentrations in mixed electrolyres [sic] III A proposed diagram for the ternary system iron-carbon-silicon, William Harney Jennings

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Ants and their relation to aphids, Charles Richardson Jones

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Toxicity of hydrogen cyanide gas on animal life, Edward G. Kelly

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The genetics of plumage color in poultry, C. W. Knox

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A study of the preparation of sirups , Everett E. Peterson

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Thiohydrolysis in solutions in liquid hydrogen sulfide , Anderson Wheeler Ralston

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Organometallic compounds of group II , Ferdinand Schulze

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The effect of nickel upon the stability of iron carbide and upon the microscopic structure of white cast iron compositions, Milo J. Stutzman

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Reduction by hydrogen, R. B. Waite

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Physiological studies on the nitrogen fixing bacteria of the genus Rhizobium, Rudger H. Walker

Theses/Dissertations from 1926

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The heat of formation of cementite as electrolyzed from a pure iron-carbon alloy of eutectoid structure and composition , George Hendrie Brodie and William Harney Jennings

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Study of the metabolism of Bacterium coscoroba on gluconic acid , Buford H. Butcher

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The equilibrium attained for the system hydrogen, bromine vapor and hydrogen bromide under the influence of the corona discharge , J. J. Canfield

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The fixation of atmospheric nitrogen by yeast , Leo M. Christensen

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Some effects of limestone and hydrated lime on bio-chemical activities in acid soils , Henry Dorsey

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The influence of time and temperature on the swelling of gluten , Werner W. Duecker

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The graphitizing behavior of iron carbide in pure iron-carbon alloys for the temperature interval 7000 C to 11000 C, Harry Parker Evans

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Studies on North American Oecanthinae (Orthoptera): I. Physiological variation in the snowy tree cricket, Oecanthus niveus De Geer, II. Tree crickets of Oregon, III. Geographical variation in the nigricornis group of Oecanthus, Bentley Ball Fulton

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I. The reaction of nitro compounds (including war gases and explosives) with organomagnesium halides; II. Study on anti-knock materials, the preparation of tetra-styryl lead , Roy McCracken

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Highway traffic and its regulation , Sue-Hin Pan

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The preparation and reactions of the lower chlorides and oxychlorides of silicon , Joseph Bradley Quig

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The solubility of rock phosphate as influenced by sulphur and gypsum , Winfield Scott

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Studies on the effects of method of application of fertilizers to some common field crops , Frederick Burean Smith

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The colon-typhoid group of bacteria and related forms: Relationships and classification, John C. Weldin

Theses/Dissertations from 1925

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Studies on soil fungi , Ernest Victor Abbott

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I. Organic oxygen antiseptics, II. The constitution of aliphatic diazo compounds, III. Anti-knock compounds , Chester Elgin Adams

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I. The electronic interpretation of reactions applied to halogen organic compounds, II. A study of antiknock compounds , Nathaniel John Beaber

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The decomposition of potassium chlorate: II, The spontaneous decomposition temperatures using various proportions of manganese dioxide, and of ferric oxide, and a mixture of manganese dioxide and ferric oxide as catalysts , James Austin Burrows

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The studies of the comparative merits of some of the American and European grown bulbs, Earle S. Carpenter

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A genetic study of certain chlorophyll deficiencies in maize , William Angus Carver

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On the acceleration of lipase activity caused by the action of substances containing vitamin A, Birger L. Johnson

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The design of a general-purpose tractor, H. B. Josephson

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A new bacterial leaf spot (pseudomonas sp) on holcus sorghum l and Zea mays L., James Blair Kendrick

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I. A method for the determination of area of earth materials; II. Some factors affecting base exchange in soil and subsoil , Douglas Verne Moses

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A study of crown gall caused by Bacterium tumefaciens on rosaceous hosts , J. H. Muncie

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A comparative study of measured and computed stresses in the Thirteenth street bridge over Skunk River near Ames, Iowa, Harry G. Neyenesch

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I. The correlation of some aromatic types with physiological action, Local anesthetics containing the furan, thiophene and pyrrole nuclei; II. Studies in reduction: A. The existence of hydrogenmagnesium halides, B. The reduction of azo compounds , Russell Marion Pickens

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Normal corn prices, Geoffrey Seddon Shepherd

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The form of legume nitrogen assimilated by non-legumes when grown in association, James Henry Stallings

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Response of phytophthora species to physical stimuli and certain organic compounds, B. N. Uppal

Theses/Dissertations from 1924

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Biochemical effects of gypsum on Iowa soils , Walter Beno Bollen

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Studies on the comparative cytology of the annual and biennial varieties of Melilotus alba , Edward F. Castetter

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The effects of various methods of applying fertilizers on crops and certain soil conditions , Dana G. Coe

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Studies on the relation of Puccinia graminis Per and Puccinia coronata Corda to Avena species , S. M. Dietz

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Transmissibility and pathological effects of the mosaic disease, Otto Herman Elmer

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The nitrogen-metabolism of nitrogen-fixing bacteria, William Vernal Halversen

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The stability of iron carbide and calculations of its heat of formation from equilibrium studies , Harold L. Maxwell

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The effect of pressure on the decomposition of potassium chlorate in the presence of manganese dioxide , Henry Max McLaughlin

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The acquisition of food by the honeybee , Oscar Wallace Park

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A study of reactions in liquid hydrogen sulphide , George Norman Quam

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Temperature and the growth of yeast , Frank F. Sherwood

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The translocation of the food materials of the wheat seedling, L. Edwin Yocum

Theses/Dissertations from 1923

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An appraisal of institutions furnishing credit for Iowa Agriculture, Joseph Lambert Benson

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Dry rot of corn , L. W. Durrell

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Nitrification and the nitrifying organisms Part I, Nitrifying organisms Part II, Certain conditions affecting the oxidation of ammonia and nitrite nitrogen Part III, Nitrates and nitrification in field soils, Rayadurg Nagan Gowda

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A study of the action of certain bacteria, yeasts and molds on the keeping quality of butter in cold storage, Michael Grimes

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The dietary properties of yeast, Victor G. Heller

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A study of the properties of wheat starch with reference to the baking qualities of flour , Glenn Garnet Naudain

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An analysis of the power requirements of ensilage cutters, Vern W. Stambaugh

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The liberation of potassium from feldspars, and of potassium and carbon dioxide from soils by fertilizer and acid treatments, Silvere Cyril Vandecaveye

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Principles and practices involved in the breeding, feeding, and management of pure-bred draft horses in the United States, Valente Estrada Villegas

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The development of a test to determine the durability of lubricating oils for the internal combustion engine, Hiram Lew Wallace

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Immunologic significance of vitamins, Chester Hamlin Werkman

Theses/Dissertations from 1922

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The effect of gypsum on Iowa soils, Lewis Wilson Erdman

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Studies in the growth and nutrition of dairy calves , Andrew C. McCandlish

Theses/Dissertations from 1920

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The effect of gypsum on bacterial activities in soils , Thakur Mahadeo Singh

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Soil acidity and bacterial activityEffect of organic matter upon soil reaction II, Roscoe Elmo Stephenson

Theses/Dissertations from 1917

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Soil inoculation with azotobacter, Paul Emerson

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The degree of sexual activity of male rabbits as affecting the seminal discharge and the nature of the offspring, Frank Alfred Hays

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Influence of orchard soil management on the formation and development of apple buds ..., Robert Stearns Kirby

Theses/Dissertations from 1916

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Studies on the phenoldisulphonic acid method for determining nitrates in soils , Charles Wesley Davis

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Environmental influences on nectar secretion, Leslie Alva Kenoyer

Theses/Dissertations from 1915

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Method of finding for distribution and further development a good type of corn for Clinton County, Iowa, conditions, M. L. (Martin Luther) Mosher

Theses/Dissertations from 1910

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Relation between live stock farming and the fertility of the land, Henry A. Wallace