Life Sciences Commons^™

The Comparative Difference In Skeletal Structure Of Two Strains Of The Mus Musculus, Pasqual A. Capitanelli

Bachelors’ Theses

Father Raymond H. Reis, S.J., and Robert A. Littleford, Ph.D., both of the staff of Marquette's University Zoology department, while working upon an experiment in the feeding to the common house mouse, "Mus Musculus", noted that in the two strains of mice that were used, the white variety of mouse was a trifle larger than the black variety, but that their weights were identical. They suggested the possibility of a skeletal difference that seemed to be most prominent in the head of the mice.

A Study Of The Relationship Existing Between Certain Insects And Some Native Western Kansas Forbs And Weedy Plants, Carl Theodore Brandhorst

Master's Theses or Doctor of Nursing Practice

To the casual observer perhaps no sight could be more commonplace than that of an insect alighting upon a Kansas sunflower. But the relationship which exists between plant and insect is a matter which is often unknown even to the specialist. And yet a lack of understanding of these relationships has at times resulted in inconvenience, loss and even in calamity. To determine the relationship which certain insects bear to some of our native western Kansas forbs and weedy plants is the purpose of this study.

A Study Of Fluctuations In Coyote Numbers And Possible Causes, Sherwin B. Griswold

Master's Theses or Doctor of Nursing Practice

This paper reports the findings of a study of coyote numbers, with particular reference to fluctuations, their periodicity, if any, and their possible causes. In order to answer these questions studies of bounty payments were made in four centrally located counties of Kansas. The counties selected for this study were Ellis, Russell, Edwards, and Harvey. The location of these counties is shown in figure I on page 5. A record of these bounty payments was secured by checking through the records in the office of the county clerk of these counties for all years in which records were on file.

A Study Of The Genus Penstemon In New Mexico, Gladys Turner Nisbet

Biology ETDs

The purpose of this study has been: (a) to present a systematic treatment of those members of the genus Penstemon that are found in New Mexico; (b) to give a full description of each species including a consideration of its relationships with other species of the genus; (c) to ascertain and map, in so far as possible, the distribution of the various species in New Mexico.

The Identification Of Certain Fiber Plants Of The American Southwest, Carl J. King

Biology ETDs

In this study an examination has been made of the leaf fiber from various species of the genera Agave, Yucca, Nolina and Dasylirion, in order establish a technique and set of diagnostic characters which might be used in the identification of archaeological material suspected of containing such fibers.

The Differentiation Of Xylem Vessels In The Stem Tip Of Phaseolus Vulgaris L. Var. Kentucky Wonder, Lora Shields Mangum

Biology ETDs

The purpose of this investigation of xylem maturation was to determine the relationship, if any, between the type of secondary-wall thickening and the order of differentiation; also, to ascertain the influence of the rate of elongation of the plant as a whole, more specifically of individual xylem cells, upon the order of deposition and type of secondary walls.

The Effects Of Deficiencies Of Copper, Iron And Zinc Upon Untreated And Rootone Treated Rye And Alfalfa, Archer P. Crosley Jr.

Biology Honors Papers

This 18 page thesis studies the effects of deficiencies in the ions of copper, iron and zinc upon untreated and Rootone treated rye and alfalfa plants.

The Effects Of The Deficiencies Of Boron, Phosphorus, And Manganese As Correlated With The Use Of A Growth-Substance, Nathaniel Winkelman Jr.

Biology Honors Papers

This thesis discusses experiments on plant growth, including ion deficiencies and the effects of growth hormones.

Quantitative Effects Of Rootone On Stem And Root Growth In Zea Mays And The Effect Of Nutrient Salts On The Same, Roy Wenhold

Biology Honors Papers

This 22 page thesis examines the effect of Rootone growth hormone on the sweet corn plant.

The Histology Of The Duodenum Of Thamnopsis Sirtalis, Harvey William Lyon

Bachelors’ Theses

The problem directly concerned is the histological study of the duodenum In Thamnopsls sirtalls, the common green or garter snake. The gross anatomy has been worked out In Reptilian forms and shows great variations, whereas very little work has been performed in the histology of the digestive organs. Some study has been made In other Reptilian forms such as the lizzard family but the knowledge of their histological structure is limited. Therefore if the gross anatomy differs in various forms, so may the histology differ also. It is the problem then of this thesis to investigate this subject and determine …

An Experimental Attempt To Modify The Sex Ratio Of Drosophila Melanogaster, Herman Weingrod

Bachelors’ Theses

Sex control has been defined as the science of producing male or female offspring at will by artificial means. Because of the far reaching consequences of such a technique, man has always had a strong desire to control the sex of his offspring. The ancient Egyptians attempted it by means of magic, while the old Hebrew Talmud offered suggestions for its practice based on practical experience. The problem as such forms part of the folklore and superstition of many ancient races and peoples.

An Experimental Attempt To Modify The Sex Ratio Of Drosophila Melanogaster, Herman Weingrod

Bachelors’ Theses

Sex control has been defined as the science of producing male or female offspring at will by artificial means. Because of the far reaching consequences of such a technique, man has always had a strong desire to control the sex of his offspring. The ancient Egyptians attempted it by means of magic, while the old Hebrew Talmud offered suggestions for its practice based on practical experience. The problem as such forms part of the folklore and superstition of many ancient races and peoples.

The Anatomy Of The Stem, Root And Leaf Of Dennstaedtia Cicutaria Moore, William J. Weishar

Bachelors’ Theses

The work in plant anatomy up to 1874 was brought together and added to by De Bary (1884) in his memorable work, the Comparative Anatomy of the Vegetative Organs of the Phanerogams and Ferns. Several years later, Van Tieghem (1886) presented the groundwork for the stelar theory to explain the fundamental structure of the stem and root axis of the plant. Since that time the anatomy of the Pteridophytes has been the object of Increased interest and study.

The Effect Of Organic And Inorganic Substances Upon The Enzymatic Activity Of Papain Using Gelatin As A Substrate, Raymond A. Sklencar

Bachelors’ Theses

In the science of enzymology many hitherto unknown facts have been discovered. Among these are the facts which show that certain substances or conditions will accelerate, inhibit, or poison an enzyme reaction. Thus, heavy metals, oxidizing agents, etc., will prevent the enzyme from working at a normal rate or even "kill" the enzyme completely. Again, certain materials or co-enzymes will speed up and increase the enzyme power of a substance.

A Study Of Origins And Ecological Features Of Hardy, Cultivated, Herbaceous Plants Of Milwaukee, Wisconsin, Dorothy Elaine Witheck

Bachelors’ Theses

Gardeners have always been interested in herbaceous plants, chiefly because of their beauty and usefulness. As a result of the great popularity, a large number of attractive varieties have been produced through centuries of' cultivation, selection and breeding. Very early agricultural and medical demands stimulated an interest in the plants, and as early as 372-287 B.C. Theophrastus, a pupil of Aristotle, described about 460 cultivated plants and classified them as herbs, undershrubs, shrubs and trees. Much of the work accomplished by the ancient Greeks was lost and it was not until the sixteenth century that renewed enthusiasm for the study …

A Study Of The Anatomical Structure Of The 6mm Wall-Eyed Pike, Richard E. Roche

Bachelors’ Theses

The following is a detailed study of the 6 mm Wall-eyed Pike. The organs and organ systems are presented and discussed in the same serial order that they appear in the embryo beginning at the anterior end and proceeding posteriorly. There has apparently been very little work done on the embryology of the Wall-eyed Pile for the literature contains only one article that is even closely related to this problem. In 1890 Reighard made a general study of the development of the Wall-eyed Pike from the time of fertilization to the fully grown adult. He did not, however, make any …

Inbreeding And Selectional Studies Of Drosophila Melanogaster, Marian Cecilia Dellers

Bachelors’ Theses

The eyeless gene of Drosophila, which causes in general a reduction of the size of the eye in the adult fly, does not seem to produce a constant effect. Thus among the offspring of one pair of flies many phenotypes will be found, flies with reduced eyes of various sizes and flies with one or both eyes completely missing. The purpose of this series of experiments was to investigate the genetical and environmental factors involved in the modification of the results produced by the eyeless gene and to determine their relative importance, especially through selective breeding in the direction of …

The Effect Of Sulfanilamide On The Spleen, Kidney, And Erythrocytes Of The Albino Rat, Paul M. Bergen

Bachelors’ Theses

Sulfanilamide today is recognized somewhat as a magical drug since it is being used in the cure of so many different diseases. Therefore it was my desire to experiment with it. The problem which the author has endeavored to solve has been, as the title implies, just what effect the drug has upon the blood, the cells of the spleen and the kidney. It has been my aim to verify or refute the findings of experimenters who have delved in the field previous to my experimentation, l and to attempt to give some explanation for the findings.

Colorless Fuchsin: A Staining Technique For The Salivary Gland Chromosomes Of Drosophila Melanogaster, Gordon I. Koehler

Bachelors’ Theses

The chromosome theory of heredity opened a large field for both cytologists and geneticists. They looked to the day when someone would find an organism in which the chromosomes were so large that it would be possible to see Qualitative differences along their length corresponding to the different genes which they knew must be present at these points. Before 1932, methods and materials to show these chromosomes to any appreciable extent had, however, not yet been devised. Competent observers using the finest of optical equipment, and the most refined techniques of staining could see little at the time of nuclear …

Culture Media For Drosophila, Joseph L. Himmelreich

Bachelors’ Theses

In the work with Culture Media for Drosophila the author was interested in producing a medium that was not expensive, easy to prepare, and one that would produce mature and hardy flies.

The Influence Of Some Alkali Salts In The Presence Of Various Concentrations Of Calcium On The Growth Of Sporobolus Cryptandrus, Vaughn A. Clayton

Theses and Dissertations

This study deals with the reactions of Sporobolus cryptandrus to various concentrations of Utah's most common alkali salts. Its purpose is to determine the effects of various concentrations of sodium chloride, sodium carbonate, and sodium sulphate on the growth and fruiting of Sporobolus cryptandrus, and to determine to what extent, if any, various levels of calcium exert a protective influence against the toxicity of these three salts. In addition to the experimental work a field of study was conducted for the purpose of determining the concentrations of total salts found in soils supporting a good growth of Sporobolus cryptandrus.

Investigations Of The Fishery Of Fish Lake, Utah, Vaughn D. Madsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fish Lake, which is located in Sevier County, Utah, is considered to be one of the most productive lakes in the intermountain regions. It is visited annually by thousands of fishermen from Utah and surrounding states. In 1934, a thirteen day check made by the Utah Fish and Game Department showed that anglers caught 17,521 fish with a total weight of 13,844 pounds, and spent a sum of $27,246.21 on expenses.

Because of the great recreational value of Fish Lake, chiefly as a fishing resort, it is desirable to find out whether or not any great change has taken place …

A Study Of The Ring-Necked Pheasant (Phasianus Colchicus Torquatus Gmelin) In Northern Utah, William T. Mckean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purpose of Study. The ring-necked pheasant (Phasianus colchicus torquatus Gmelin) is well enough known to need no introduction. It is at present undoubtedly the most abundant and most important gallinaceous game bird in northern Utah. Its abundance and its occurrence in agricultural areas has stimulated much general interest. Yet, aside from two food habits studies, both conducted in Utah County, no intensive research has been made into its ecological relationships or its general life history in Utah.

In order to formulate sound management plans for the pheasant in Utah, the Utah Cooperative Wildlife Research Unit has felt the need …

Stem Blight Of Alfalfa In Utah: A Complex Of Two Distinct Diseases, William E. Rader

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In 1908, Sackett described for the first time what appeared to be a new bacterial disease of alfalfa in Colorado. To this particular disease he applied the name “stem blight" and attributed the cause to a bacterium, Pseudomonas medicaginis n. sp. For some two decades or more Sackett's work on this disease was accepted. During this time stem blight, which was first thought to be indigenous to the western United State, was reported from nine states east of the Rocky Mountains. In 1933, Johnson and Valleau described a disease of alfalfa, characterized by stem lesions very similar in appearance to …

The Effect Of Some Environmental Influences In Bulk Hybridization Of Grass, John W. Clark

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For decades man has been interested in selection and hybridization of crop plants, but it has not been until in comparatively recent years that anything of importance has been done toward the improvement of perennial forage grasses.

A Study Of The Sanitary Quality Of Drinking Water In Rural Districts Of Crawford County, Kansas, Kenneth Andrew Mcclure

Electronic Theses & Dissertations

This study involved the testing of seventy-six wells and thirty cisterns in representative rural districts of Crawford County, using methods specified by the American Public Health Association in the eighth edition of Standard Methods for the Examination of Water and Sewage.

The results of the tests showed that only fourteen of the 106 wells and cisterns tested did not yield Escherichia coli. Of the ninety-two polluted drinking water supplies twenty-seven were from cisterns, while sixty-five were from wells. Of these sixty-five only five of the fourteen deep wells in the group showed evidence of contamination.

These findings seem to warrant …

Scientific Illustration, Alys Leontine D'Avesne

Master's Theses

It may be somewhat difficult at first glance to understand the essential character of the relationship of art to science, and especially to the natural sciences. Without illustration it would be impossible either to learn or to teach these sciences . Drawings are needed in the classroom and in the laboratory to aid the teacher, and they are perhaps even more important in individual research where there is no teacher present to guide and to instruct the student .

Scientific illustration is not only an aid to teaching, it teaches by itself when properly executed. In cases where verbal description …

The Effect Of Climate And Different Grazing And Dusting Intensities Upon The Yield Of The Short Grass Prairies In West Central Kansas, Marvin L. Lacey

Master's Theses or Doctor of Nursing Practice

The purpose of this problem was to determine the effect of climate, amount of dusting, and degree of grazing by livestock and grasshoppers upon the quantity and quality of forage produced by various short grass pastures in west-central Kansas.

An Economic Study Of Rough Rice Marketing In Louisiana., Clarence Boonstra

LSU Historical Dissertations and Theses

No abstract provided.

The Incidence Of Trichinella Spiralis In The Diaphragms Of Swine From The Louisville Abattoirs., Stuart Lyle Adams

Electronic Theses and Dissertations

Trichinosis is a disease caused by the parasitic nematode Trichinella spiralis. When meat containing encysted larvae is consumed the cysts are dissolved by the action of the gastric juice in the stomach and the larvae migrate to the intestine where they mature, copulate and give birth to living young within a week of the original infection. The larvae enter the lymph spaces and are carried to the thoracic duct from which they reach the venous circulation and thence the arterial circulation by way of the heart and the pulmonary capillaries. From the arterial blood the larvae enter most of the …