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Investigations on Abundance, Habits, and Distribution of Amphibians and Reptiles of Denton County, Texas

Description: The purpose of the present study of the herpetofauna was to obtain additional information regarding the vertebrates of Denton County, and to produce a well-preserved, cataloged collection of the amphibians and reptiles for the Museum of Zoology, North Texas State University. An understanding of the vertebrate life of the county also involves an investigation of the habitats within the county that may, in part, count for the distribution of these animals. It is well recognized that the environme… more
Date: January 1967
Creator: Telfair, Raymond Clark
Partner: UNT Libraries
open access

Some Effects of X-Irradiaion on the Adrenal Response to Hypothalamic Stimulation in Rats

Description: Exactly where in the hypothalamus is the adrenal-pituitary response to X-irradiation "triggered" or initiated? Moreover, does ionizing radiation act directly on specific centers in the brain or does it act indirectly via the production of some humoral agents? Finally, what role does the hypothalamus play in the radiation-syndrome? The purpose of the present study was to attempt to answer these questions by determining the effects of two stressor agents, X-irradiation and electrical stimulation … more
Date: January 1967
Creator: Agnew, Robert Laing
Partner: UNT Libraries
open access

Effects of X-Irradiation on Water and Ion Flux in Isolated Roots

Description: Due to the relatively small amount of work concerning radiation, it was thought feasible to use ionizing radiation as a tool to study the relationship between water and salt flux in isolated root systems. Moreover, the more quantitative potometric method lends itself well to such a study, since the two processes can be followed simultaneously. the aims of this study, therefore, were 1) to determine effects of X-irradiation on water, calcium and potassium flux in excised onion roots; 2) to deter… more
Date: January 1967
Creator: Wall, Malcolm J.
Partner: UNT Libraries
open access

Pleomorphism in Selected Genera of Algae

Description: It is the purpose of this study to ascertain what environmental factors might cause morphological changes exhibited by certain algae, also to determine if this variation in morphology is vegetative, reproductive, or artifactual in nature, and to show what effects these changes in morpohology might have on classification of the organisms in question.
Date: June 1967
Creator: Bruton, Barbara A.
Partner: UNT Libraries
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