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  Partner: UNT Libraries
 Degree Discipline: Biology
 Collection: UNT Theses and Dissertations
The Destruction of Enterobacteriaceae by the Sewage Plants of Decatur, Texas.

The Destruction of Enterobacteriaceae by the Sewage Plants of Decatur, Texas.

Date: 1949
Creator: Gettys, Charles T. (Charles Thomas), 1921-2007
Description: The nature of this problem divides itself into two parts, that is, a study of the old sewage plants in operation through the summer of 1947 and a study of the new plant put in operation during the fall of the same year.
Contributing Partner: UNT Libraries
The Fecundity of the Bluegill (Lepomis Macrochirus) in Certain Small East Texas Reservoirs

The Fecundity of the Bluegill (Lepomis Macrochirus) in Certain Small East Texas Reservoirs

Date: 1949
Creator: Estes, Charles M.
Description: A study of reproduction and spawning habits of the bluegill in a particular lake must include adequate samples for each period of the year. This will make it possible to determine the number of eggs in each spawn and the frequency of spawning. The number of spawns and average egg production for various sized fish shows the pattern of activity and makes possible further basic research.
Contributing Partner: UNT Libraries
The Histological Effects of Injections of Fish Pituitary Extracts on the Testes of Male Frogs, (Rana Pipiens), and the Reproductive System of Immature Mice

The Histological Effects of Injections of Fish Pituitary Extracts on the Testes of Male Frogs, (Rana Pipiens), and the Reproductive System of Immature Mice

Date: 1949
Creator: Robertson, William George
Description: The purpose of this investigation was first, to make a histological and cytological study of the testis of male frogs, Rana pipiens, and to determine if there were tissue or cellular changes as well as physiological effects caused by fish pituitary-extract injections. Second, to determine if injections of fish pituitary extract into immature female white mice caused histological changes in the ovaries and uteri.
Contributing Partner: UNT Libraries
The Isolation and Identification of Micro-Organisms from Spoons of Public Eating Establishments in Denton, Texas

The Isolation and Identification of Micro-Organisms from Spoons of Public Eating Establishments in Denton, Texas

Date: 1949
Creator: Rugeley, Sarah Rose
Description: This investigation deals with the isolation and identification of bacteria found on selected samples of spoons in various eating establishments in the vicinity of Denton, Texas.
Contributing Partner: UNT Libraries
Microflora Found in a Selected Group of Food Products Enclosed in a Protective Wrapper

Microflora Found in a Selected Group of Food Products Enclosed in a Protective Wrapper

Date: 1949
Creator: Ogden, William H.
Description: The purposes of this study are, first, to determine relative numbers and predominant types of bacterial organisms in the various food products studied; second, to evaluate the efficiency of the paper coverings of these foods; and third, to determine whether these products are potential sources of food poisoning.
Contributing Partner: UNT Libraries
The Physical, Chemical, and Biological Factors Contributing to Algae Blooms in Fresh-Water Reservoirs

The Physical, Chemical, and Biological Factors Contributing to Algae Blooms in Fresh-Water Reservoirs

Date: 1949
Creator: Redden, David R.
Description: The purpose of this investigation is to attempt to relate the distribution and periodicity of the plankton to the variations in the biological, chemical, and physical factors.
Contributing Partner: UNT Libraries
The Response of Amphibia and Rodents to Fish Gonadotropins

The Response of Amphibia and Rodents to Fish Gonadotropins

Date: 1949
Creator: Bishop, Jack G.
Description: The purpose of this research is, first, to determine by laboratory methods, that species specificity does not exist in closely allied taxonomic animals; second, to determine a unit of activity for the gonadotropic hormone. For this purpose a quantitative method for determining potency is necessary to ascertain the seasonal production of the gonadotropic factor in fish. A further aim in this investigation is to demonstrate that the diversity of the gonadotropic factor, in relation to phylogenetic variations, is not as ineffectual as previously reported.
Contributing Partner: UNT Libraries
The Response of White Mice to Pituitary Gonadotropins of Fish

The Response of White Mice to Pituitary Gonadotropins of Fish

Date: 1949
Creator: Doggett, Virginia Clair
Description: The purpose of this experiment is to determine if immature female white mice will react to the gonadotropic hormone from the anterior pituitary of several species of fish. If they can be shown to do so, a second purpose is to establish an assay unit for this fish gonadotropin in order that it may be used with predictable results in inducing extra-seasonal spawning for fresh-water conservation practices.
Contributing Partner: UNT Libraries
Seasonal Survey of Actinomycetes in Twenty Denton County, Texas, Soils

Seasonal Survey of Actinomycetes in Twenty Denton County, Texas, Soils

Date: 1949
Creator: Hudgins, Gladys
Description: This investigation has had for its aim a further study of actinomycete flora of twenty Denton County, Texas, soils. The problem has evolved itself into, first, a seasonal analysis for the number of actinomycetes in each of the twenty soils; second, a determination of the types of soils that contain the greatest number of actinomycetes in each cultivated and uncultivated land; third, a determination of soil moisture and pH; and fourth, an attempt to correlate these factors with the number of actinomycetes found in each soil type.
Contributing Partner: UNT Libraries
A Solution for High Bacterial Counts in a Local Dairy, Denton, Texas

A Solution for High Bacterial Counts in a Local Dairy, Denton, Texas

Date: 1949
Creator: Simonds, Thomas Hugh
Description: It is the aim of this investigation to determine through routine checks if the bacterial count in the milk from Brooks Dairy Company is high and if so to determine the source. If it is found that the laboratory plate counts are unnecessarily high, it is the further purpose of this paper to make recommendations for improvements in the quality of milk produced by this dairy plant.
Contributing Partner: UNT Libraries