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Bacterial Survey of Representative Denton County Wells with Special Reference to Sanitation

Description: This thesis aimed to study the seventy-two representative wells of Denton County and to determine the possibilities of infection with typhoid organism. The sanitary survey and the test for Colon-Aerogenes bacteria show that 55% of the 72 wells studied are unsanitary, 27% are sanitary, and 18% are doubtful.
Date: June 1937
Creator: Roberts, Sally Stevens
Item Type: Refine your search to only Thesis or Dissertation
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Food Habit Analysis of the Two Species of Texas Crappie

Description: This study is based upon information taken from stomach analysis of 302 black crappie and 561 white crappie; the following data will be presented: 1. Food of adults and fingerlings; 2. Diet variation in relation to food availability; 3. Seasonal variation of feeding habits; 4. Diet variation in relation to size of crappie. Collections were made from ten lakes located in North, East, Central, and South Texas.
Date: 1941
Creator: Mitchell Glenn C.
Item Type: Refine your search to only Thesis or Dissertation
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The Phototropic Properties of Lactuca Ludoviciana (Nutt.) DC. and Silphium Laciniatum L.

Description: This paper deals with certain phases of phototropic properties of two exceptional plants, the pertinent behavior of each being decidedly individualistic and in remarkable contrast to that of herbaceous plants in general. The prickly lettuce, Lactuca ludoviciana (Nutt.) DC. and the rosinweed, Silphium laciniatum L., two common Denton County, Texas, plants, have been selected for this study.
Date: 1941
Creator: Neal, George C.
Item Type: Refine your search to only Thesis or Dissertation
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Seasonal Variations in Microflora of Four Denton County, Texas, Clay Soils

Description: This investigation has for its aim the confirmation of the correlation between soil moisture and the microflora of soils, and a lesser relation between the soil temperature and the microflora. The soils used in this study are typical clay soils of Denton County, Texas. The samples were taken from virgin pasture lands and analyses made monthly or semimonthly. The wide seasonal variation of temperature and rainfall afford a good opportunity for this study.
Date: 1941
Creator: Manire, Philip
Item Type: Refine your search to only Thesis or Dissertation
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Sanitary Aspects of the Swimming Pool of North Texas State Teachers College, Denton, Texas

Description: This investigation was conducted in order to show that insanitary conditions may exist in the swimming pool at North Texas State Teachers College provided the proper precautions are not taken; and, in contrast that this pool can be sanitary and entirely safe when operated and used according to the necessary sanitary specifications.
Date: 1943
Creator: Self, Louise
Item Type: Refine your search to only Thesis or Dissertation
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The Incidence of Escherichia Coli and other Coliform Organisms on Seventy-One Samples of Fresh Fruits and Vegetables Purchased from Eight Grocery Stores in Denton, Texas

Description: This investigation has for its aim the explanation of the incidence of colon bacteria on a number of food samples purchased in grocery stores of Denton, Texas, by an analysis of correlative sanitary factors.
Date: 1945
Creator: Scoggin, Frances Grammar
Item Type: Refine your search to only Thesis or Dissertation
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The Taxonomic Significance of the Foliar Epidermal Hairs of Several Families of Dicotyledons

Description: The present investigation deals with the study of non-glandular epidermal hairs from the leaves of two hundred representative dicotyledons of forty-eight families in the Central North Texas area. Special attention has been given to the Compositae and Leguminosae in an effort to find a possible correlation between epidermal hair morphology and the taxonomic position of the plants concerned.
Date: 1945
Creator: McCarty, Faye A.
Item Type: Refine your search to only Thesis or Dissertation
open access

A Quantitative and Qualitative Bacterial Analysis of Pecan Creek

Description: Since Pecan Creek receives sewage wastes from an obviously inadequate disposal system, it seemed possible that it could receive pathogenic bacteria. The fact that these might be present in numbers sufficient to cause epidemics, provided the proper natural vectors were present, stimulated an interest in and the pursuance of this study.
Date: 1946
Creator: Cook, Vernice
Item Type: Refine your search to only Thesis or Dissertation
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