Life Sciences Commons^™

An Ecological Study Of The Pocket Gopher In An Sandy Loam Area Of Ellis County, Kansas., Benjamin Mosier

Master's Theses or Doctor of Nursing Practice

This thesis is an ecological study of the pocket gopher in a sandy loam area of Ellis County, Kansas. The economic importance of the pocket gopher varies with the type of land and with its use. It is rather obvious that the economic importance of the gopher changed with the widespread advent of the settlers into Western United States. From the viewpoint of extensive agricultural practices, the pocket gopher must be considered a menace on cultivated lands. On non-agricultural districts the condition is in general reversed. Most ecologists recognize a definite benefit from burrowing animals on wild land.

An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin

Master's Theses or Doctor of Nursing Practice

Biology is the science of life and therefore deserves every consideration in the high school curriculum. The world today is making an extensive and intelligent use of biology in solving problems of personal and social significance. Scientists have discovered that certain phases of the subject are more important to man's welfare than others. For this reason it is essential that biology be presented to our high school students not as isolated facts, but in relation to the problem of living. Through this science of living things, the student can gain a healthy respect for facts and for conclusions based on …

Life History Studies Of The Mouse, Peromyscus Truei Nevadensis, Lowell S. Miller

Theses and Dissertations

Peromyscus truel's a fairly common inhabitant of the upper sonaranlife zone of the Western States. It is an excellent laboratory anlmal with the limitation that captivity must be accompanied by forced activlty, in order to keep the animals within the limits of normal activity. This mouse is polyestrous and breeds from early spring to late fall. Observations have shown pregnancy in late September and in early February. It is the writer's belief that ovulation in the ovary occurs only when copulation has taken lace, because corpora lutea has only been found in pregnant or lactating females. The evidence is scanty …

Hormones Of The Vertebrates And Their Influence On The Growth And Development Of Invertebrates, M. G. Heckman

Biology Honors Papers

This 14 page thesis discusses the nature of the hormone thyroxine, the structure and physiological behavior of paramecium and describes an experiment on the effect of vertebrate hormones with various invertebrates.

A Seasonal Study Of Food Of Some Birds Of The Wasatch Chaparral, Herbert H. Frost

Theses and Dissertations

A seasonal change occurred in the type of food consumed by the birds studied. Plant food was more important in the winter than in the summer. Animal food, except in one species, was found to be more important during the summer months. The most important plant foods determined by frequency and listed in order of their abundance were: Helianthus annuus, Celtis sp., Quercus sp., Polygonum convolvulus, Amaranthus blitoides, Chenopodium album, and Amaranthus graecizans. The most important animal foods based on occurance in stomachs examined were: Coleoptera, Hymenoptera, Lepidoptera larvae, Orthoptera, Undetermined larvae, Diptera, Homoptera, Coleoptera larvae, Araneae, and Hemiptera. Seventeen …

Study Of Viable Seeds In Surface Soil From Various Habitats In Ellis County, Kansas, Robert D. Lippert

Master's Theses or Doctor of Nursing Practice

It is the purpose of this study to determine what species of plants emerge from samples of surface soil taken from various habitats after several years of favorable growing conditions.

Pastures Of Western Kansas In Relation To Intensity Of Utilization In Past Years, Gerald W. Tomanek

Master's Theses or Doctor of Nursing Practice

Short grass pastures vary in their ability to produce forage for livestock consumption. One of the reasons for this difference is a variation in the degree of utilization in past years. Forage production of short grass ranges has been reduced to about one-half after only a few decades of improper grazing; therefore the problem of proper utilization is becoming more important every year (Forest Service, 1936). When the settlers first came to western Kansas they found an almost complete cover of native vegetation and during the first few years only a small portion of the range land was cultivated. With …

Membership Relations Of The Utah Poultry And Farmers' Cooperative, Glen T. Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Commercial egg production in Utah has developed gradually since 1920. Production of eggs increased from 142 million in 1924 to 433 million eggs in 1946. The percentage of total farm income of the state derived from the poultry industry increased from 5.3 percent in 1924 to 23.1 percent in 1946 and at the present time constitutes the largest income of any farm enterprise in this area. Factors influencing this development are: 1. High prices resulting from the war period of 1917 to 1920 followed by the depression period when prices were low. 2. The organization of cooperative egg-marketing associations. 3. …

The Cost Of Producing Eggs And The Egg Feed Ratio In Utah 1929-'46, Emer E. Broadbent

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Commercial egg production in Utah has developed largely since 1920. Prior to that time most farms had some chickens but the eggs were either used at home or consumed on the local markets. What few commercial poultry farms there were also supplied local markets. It has been estimated that the total egg production in the stat was just about equal to the consumption within the state. Soon after1920 however, egg production on a commercial basis began and thereafter expanded rapidly for a time.

A Study Of A Heron Nesting Colony, Linden J. Leatham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Herons are well known because of their gregarious nesting habits. Like many others of the lower orders of birds they nest together in pure or mixed colonies of many different combinations and under diverse living conditions. The population of different colonies may vary from a few pairs to many thousands of pairs depending upon the nature and extent of the breeding area, the food supply available and the protection afforded either by natural or artificial means.

In Utah and adjacent areas of bordering states, many types of heron associations have been studied and reported by ornithological workers. Breeding colonies of …

An Adaptation Of The Feulgen Reaction For The Staining Of The Salivary Gland Chromosomes Of Drosophila, Herman C. Inlow

Bachelors’ Theses

The discovering of the genetic value of Drosophila salivary gland chromosomes by Painter, Heitz, and Bauer in 1934 posed a problem of technique to the microtomist that is still being improved upon and widened. The staining of these chromosomes fer better study and to determine their properties, both chemical and physical, has been the object of intense research. This paper is the result of my work in connection with this subject.

A Taxonomic Study Of The Adult Mosquitoes Of Utah County With Notes On The Biology And Distribution Of The More Common Species 1946-1947, Cluff E. Hopla

Theses and Dissertations

In Utah County, information has been lacking concerning the taxonomy and distribution of mosquitoes. With the knowledge of this condition, it is felt that information can be presented which will be of value both to the scienoe of Entomology and the area concerned.

The Measurement Of Agricultural Production In The Utah From 1920 To 1946, Owen L. Brough Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As agricultural leaders become increasingly aware of the economics involved in the production and marketing of agricultural products, there develops an increased need for more accurate and more complete methods of measuring agricultural production. This need is not only for the satisfactory measurement of the physical production of a given crop, but is also for a unit of measurement that will make possible a comparison of the production of individual enterprises and groups of enterprises for a given year and from year to year. Because the production of many crops, and livestock and livestock products are customarily measured according to …

A Taxonomic Study Of The Scolytidae (Coleoptera) Of The Logan Canyon Area Of Utah, Stephen L. Wood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In spite of the great economic importance of north American Scolytidae, many taxonomic descriptions remain inadequate for the identification of species, and existing keys have been made obsolete by the recent description of new species. To bring these keys up to date and make them useful to students and practical foresters, detailed studies of the morphological structure of the various species are necessary. The purpose of the present investigation has been to clarify and revise existing keys and to describe briefly the species of Scolytidae occurring in the Logan Canyon area of Utah. The following keys and descriptions will be …

Variable Factors In The Determination Of Fat And Moisture In Cheddar Cheese, William C. Winder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The rapid growth of the dairy industry which began in the latter half of the nineteenth century necessitated the development of chemical tests for determining the composition of dairy products. Chemists devoted much study and labor in devising methods which would be both accurate and rapid. As a result of these researches a large number of tests were developed. Many of the methods possessed considerable merit and a few were so satisfactory that the rest did not come into general use. The basic principles of all the tests now in use were discovered between 1880 and 1890.

A Survey Of Intestinal Protozoa At The Stockton State Hospital : Stockton, California, Lawrence Melvin Gholz

University of the Pacific Theses and Dissertations

During the past months much has been published in periodicals, especially those of a pictorial nature, which discredits institutions established for the care of' the mentally ill throughout the nation. Many articles have been presented which show an intelligent approach, but the majority of these treatments are by those who are basing too much on a very narrow experience. For example, one news magazine recently printed a picture of a mental patient in institutional garb sitting on a bench in one of the poses most characteristic of a catatonic. The caption of the picture seemed to ignore this significant fact …

Studies On Genetics And Classification Of Four Forms Of Pellicularia Filamentosa (Pat.) Rogers., Beatrice Barbara Exner

LSU Historical Dissertations and Theses

No abstract provided.

Cytology Of Glomerella., George Blanchard Lucas

LSU Historical Dissertations and Theses

No abstract provided.

Studies Of Black-Scale Disease Of Easter Lily., Frank J. Reynolds

LSU Historical Dissertations and Theses

No abstract provided.

The Effects Of Aerostatic Pressure And Partial Vacuum On The Germ Cells And Development On Drosophila Melanogaster., Mildred Fae Swann

LSU Historical Dissertations and Theses

No abstract provided.

Taxonomic Studies Of Louisiana Aphids., Henry Bruce Boudreaux

LSU Historical Dissertations and Theses

No abstract provided.

A Historical Study Of A Wilt Disease Of Chrysanthemums, Eugene Constantine Gasiorkiewicz

Bachelors’ Theses

This thesis is the result of research at Marquette University on Chrysanthemums for the past year. The specific problem was to study the development of the pathogen, Fusarium conglutinans Wr. var. callistephi Beach, which was the cause of serious infection of chrysanthemums. This treatise covers the procedure and methods used in the study.

The Cation Exchange Capacity Of The Soils Of The Tennessee Agricultural And Industrial State College Farm, Fred E. Westbrooks

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

History Of The Cotton Mission And Cotton Culture In Utah, Ivan J. Barrett

Theses and Dissertations

The writer, being interested in the agricultural project of cotton growing in early Dixie, and finding scarcely anything written on the subject, has gone into the original sources, histories, journals, diaries, etc., and found a reservoir of enlightenment regarding cotton culture in Utah's Dixie. He has tried to assemble from the most important sources, an informative yet interesting study of cotton culture in Utah. The writer in no wise pretends to have exhausted the subject, nor to have reached all the sources. Many of those early cotton growers who did most to produce this staple, kept no record of their …

Contributions To The Study On Helminth Fauna Of Dillon Beach, Francis C. Gale

University of the Pacific Theses and Dissertations

Studies on trematodes of marine organisms of the Pacific Coast have been of a scattered and fragmentary nature. J. Stafford (1904) collected and described a number of trematodes from fishes of the north Pacific, but, in his historical survey, Manter (1926) fails to mention specifically any studies covering the waters south of Canada. More recently, in the United States, several contributions to the field have been made by Dr. John E. Guberlet at the University of Washington and at the College of the Pacific by Dr. Alden Noble, under whose guidance this study was made. James Park (1937) revised the …

The Nature Of The Amenorrhea Of Lactation In Humans., Carroll H. Luhr

Electronic Theses and Dissertations

No abstract provided.

Some Microtechnical Experiments And Recommendations Of New Prestaining Techniques, Edward D. Wood

University of the Pacific Theses and Dissertations

The preparation and staining of biological structures for microscopic examination is of extreme importance to the science of biology since almost all phases of biological advance are, at least to some degree, dependent upon microtechnical methods. Nevertheless, research workers and students of biological science are sooner or later impressed with the inadequacy of many of the microtechnical methods used by them and their colleagues. In the field of microtechnique there is difficulty in finding standardized methods which will uniformly bring optimum results. Throughout most procedures there seem to be variables over which no definite controls have been established. Microtechniques have, …

Studies On Synthesis By Enzymatic Catalysis., Charles Henry Wabnitz 1916-2004

Electronic Theses and Dissertations

No abstract provided.

Fusarium Conglutinens Variety Callistephi, Beach And Its Effect On The Chrysanthemum, Mary Heimick Palmer

Bachelors’ Theses

This thesis is the result of extensive research for the past year at Marquette University on Chrysanthemums. In particular, I refer to a specific problem, that of an attempt to ascertain with certainty the cause of a serious infection of Chrysanthemums. This treatise covers the procedure and methods used in discovering the actual pathogen, and my reasons for believing that this particular pathogen is Fusarium conglutinens variety Callistephi.

The Effects Of Estrogens On The Thyroid & Adrenal Glands Of The Male Turtle, Jeanne Frances Genrich

Bachelors’ Theses

Up to the present time there appears to have been very little research done on the thyroid or adrenal glands of the turtle. This seems to be especially true in respect to the effects of estrogens on these two glands. However, some work has been reported on other members of the reptilian family; particularly garter snakes, and more recently, the lizard.