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Uniomerus tetralasmus, Specimen #1237

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; thin shell; bluish-white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be very-long dead when collected.
Date: February 25, 1975
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum

Toxolasma parvum, Specimen #1119

Description: One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; thick shell; single looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be very-long dead when collected.
Date: February 25, 1975
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula mortoni, Specimen #1088

Description: One preserved mussel specimen including the left valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.
Date: October 24, 1973
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum

Quadrula mortoni, Specimen #900

Description: One preserved mussel specimen including the right valve only. The specimen exhibits a round shape; moderately thick shell; white internal coloring; dark brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: February 25, 1975
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum

Lampsilis hydiana, Specimen #354

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thin shell; double looped beak sculpturing; white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be recently dead when collected.
Date: October 8, 1972
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Lampsilis hydiana, Specimen #355

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits a rhomboidal shape; thin shell; double looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 100 - 120 mm in length and was assessed to be recently dead when collected.
Date: October 8, 1972
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Uniomerus tetralasmus, Specimen #1277

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.
Date: January 28, 1974
Creator: Britton, Joseph
Partner: Elm Fork Natural Heritage Museum

Uniomerus tetralasmus, Specimen #1276

Description: One preserved mussel specimen including both the left and right valves. The specimen exhibits an elliptical shape; thin shell; white internal coloring; brown external coloring; no external sculpturing. Collected in the Trinity basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.
Date: October 24, 1973
Creator: Pettit, J.
Partner: Elm Fork Natural Heritage Museum
open access

A Historical Study of Agricultural Education with Special Application to Denton County

Description: In this study the activities contributing to the welfare of the farmers of Denton County will be confined to the experiment farm or station and the county extension service. These two educational agencies have proved that adult education can be very successful. Although there is no direct relation between the two, most of the information learned in experimental research is imparted through the extension service.
Date: August 1937
Creator: Norman, Lee Weldon
Partner: UNT Libraries
open access

A Study of a Selected Group of Science Related Characteristics of Non-Science Majors

Description: The purpose of this study is to gather information related to the characteristics of two groups of undergraduate non-science majors; namely, those students who once considered science as a career and subsequently changed to a non-science major and those who have never considered a career in science. It is frequently observed that children in the elementary school have an intense interest in science. One of the principal concerns of this study is how and for what reasons has the interest in science changed between elementary school and college? It is also the purpose of this study to gather information related to the attitudes of these college students toward the science courses they have had in high school and toward their science teachers. In attempting to arrive at an answer, the group who once considered a science career and those who have never considered an occupational choice in a field of science will be compared in the following areas: 1. General information such as sex, age, size of high school attended, rank within their graduating classes, college classification and military experiences. 2. Occupations and hobbies of parents. 3. Experiences which may influence attitudes toward science such as elementary school science, high school science courses, high school science teachers, attitudes toward science requirements, high school courses liked most, high school courses liked least, and membership in science clubs. 4. College science courses completed. 5. Extent of the interviewees' present interest in science, Finally, the circumstances surrounding the tentative choice of a science career by those who once considered such a career will be discussed.
Date: August 1957
Creator: Bearden, Bennie Paul
Partner: UNT Libraries
open access

To Determine the Extent to Which the Denton County Library is Meeting the Recreational Reading Interests of the Elementary Pupils of the Rural Schools of Denton County, Texas

Description: "In order to determine the extent to which the Denton County Free Library is meeting the needs of the elementary school children for recreational reading, an analysis was made of the reading interests of the elementary-school children of twelve common school districts of Denton County, Texas. The ages of these children ranged from nine to fourteen years. A second analysis was made by checking various acceptable authors in the field of children's reading interests as read by the children in this group and age level. This information was secured by having each child in the schools check the items listed in a school survey sheet. This information was tabulated and the results are shown in tables presented in Chapter III. A third analysis was made of library material found in the reading lists that were supplied by the county; and lastly, a comparison was made of the results of the last analysis with the two preceding ones." -- leaf 3
Date: August 1948
Creator: Lambert, Benjamin Carter
Partner: UNT Libraries
open access

Parasites of the Cricket Frog, Acris Crepitans, of Denton County, Texas

Description: The purpose of this study was threefold. The literature concerning parasites of A. crepitans was to be brought up to date. Contributions to the general body of knowledge pertaining to the parasitic fauna of host specimens of A. crepitans and specifically those found in Denton County, Texas, were to be made. Finally, specimens found parasitizing host specimens of A. crepitans were to be preserved and classified.
Date: August 1968
Creator: Block, Edward F.
Partner: UNT Libraries
open access

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
Partner: UNT Libraries
open access

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.
Partner: UNT Libraries
open access

A Chemical, Physical, and Biological Investigation of the Total Suspended and Dissolved Substances in Lake Dallas with Emphasis on Sanitation

Description: The purpose of this investigation is to determine the suspended organic matter and the total phosphorus in the waters of Lake Dallas and to evaluate these findings. Since organic matter floating in lakes is largely composed of minute plants, animals, and detritus derived from animals and plants, the fertilizing effect of phosphorus must be considered as an integral part of this problem.
Date: 1942
Creator: Eads, Ewin A.
Partner: UNT Libraries
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