This report describes the effects of methylglyoxal on several green and blue-green algae, its correlation with photosynthesis, and a possible explanation of its metabolic role in the algae.

Populations of all stages of three species of Hydropsychidae, Hydropsyche simulans, Cheumatopsyche campyla, and Cheumatopsyche lasia were sampled fro September, 1971, to August, 1972, on the Brazos River in Palo Pinto County, Texas. Supplemental observations relating to emergence, mating and oviposition, and larvae food habits were continued to July, 1973. The purpose of this study was to elucidate the life cycles and ecology of this Hydropsychidae complex.

The problem of this study is twofold: casting aluminum relief sculptures which have controlled diversified textural properties, and the development of a technical teaching process in the form of a pictorial documentation.

The composition is in seven major sections with a coda at the end. The work requires approximately fifteen minutes for performance. The discussion and analysis includes a description of the play and an explanation of the treatment of the elements of music. The work requires the following instrumentation: two flutes, two piccolos, two alto flutes, two oboes, two English horns, one bassoon, one contra-bassoon, one French horn, one trumpet, one flugelhorn, one melodion, one piano, one vibraphone, one xylophone, three timpani, mixed percussion, one solo soprano, two solo tenors, one solo bass, a choir of three women and two men, violin, and cello.

This work, Intermedia Piece, is a statement of the idea that there are common musical drives present in musicians which cannot be completely suppressed by intellectual achievement or training. the drives presented are those of basic rhythm and direct reaction to rhythm by movement. Aural and visual elements are used to make the statement. All scored events are necessary for successful performance. It is therefore a true intermedia work.

This is a sonata in four movements for violin and piano. Since certain thematic or accompanimental statements relate the four movements to each other, the sonata may be considered a cyclic work. The four movements are balanced stylistically, rhythmically, and tonally, with the first movement related to the third, and second to the fourth. Movements I and III are characterized bu "traditional" form and content, while II and IV are improvisatory in character.

The composition consists of two movements: Adagio and Moderato. The first movement is mono-thematic, and is divided into three sections. The second movement offers contrast with the first by establishing an immediate tempo, dynamic, and color change.

The Serenade for Viola and Orchestra is a one-movement composition of three connecting sections with two main themes of contrasting character. The "relatedness" of the sections does not depend on common thematic material, but rather on a system whereby motives evolve out of the thematic material and from elements in preceding sections. The sonorous timbre of the viola is exploited and becomes the central tessitura for the piece. The title is representative of the lyrical nature of the composition as a whole, especially the first and third section.

Psalm is a composition for symphony orchestra. The duration is from twelve to fifteen minutes. The form is sonata-allegro. Tonal organization is twelve-tone, although melodic development is by traditional methods rather than by row technique. Tempo modulation has replaced the traditional tonal modulation of sonata form. The first theme provides the harmonic basis for the entire work after the introduction. The second theme is used extensively in the development. The development is a fugue in which the techniques of retrograde, inversion, diminution, and augmentation are used. As a study in textures, Psalm displays variety rather than development.

Four Preludes is a musical setting of Carl Sandburg's poem, "Four Preludes on Playthings of the Wind." The music consists of four movements scored for chorus, soprano solo, baritone solo, and full orchestra. The movements are connected by orchestral interludes between each of the four verses. The total performance time is approximately twelve minutes.

A large, multi-basin reservoir (Garza-Little Elm Reservoir) in north central Texas was studied to determine the relative effects of various parameters on primary productivity. The basins were impounded several years apart, thus allowing the influence of age on water chemistry and biota to be considered. Another principal influence on water quality was secondary sewage effluent that entered one basin from a nearby source.

The dissertation consists of four recitals: one chamber music recital, two solo recitals, and one lecture recital. The repertoire of these programs was chosen with the intention of demonstrating the capability of the performer to deal with problems arising in works of varying types and of different historical periods.

This study was conducted to compare changes in self-concept and dogmatism among high school subjects at three levels of manifest anxiety following group vocational counseling. The related literature includes studies of anxiety as it affects self-concept, dogmatism, and group activities. Studies of the relationship between self-concept and dogmatism are also reported.

This study deals with the growth and development of higher education in the Canal Zone from 1933 to the present. This study uses information obtained from the special Panama Collection available at the Canal Zone Public Library, government documents, letters, and administrative memoranda on file in the Agency Record Center, interviews, personal correspondence, newspapers, Panama Canal publications, minutes of meetings held by local chapters of Association of University Professors and Advisory Council, annual reports, reports made by Middle States Association of Colleges and Secondary Schools, bulletins, and yearbooks.

Previous reports have shown that killed cells of S. aureus potentiate the lethal effect of crude staphylococcal alpha toxin for mice. In the present study this synergistic effect has been demonstrated with highly purified preparations of alpha toxin. Time studies indicate that the active principle does not appear to be released until approximately two hours following administration of the whole cells.

The investigation was concerned with characterizing effects of this tumor line on lipid metabolism in DBA/1J mice and serum protein levels and cellular changes in DBA/1J and Swiss white mice. Total lipids, lipid phosphorus, neutral lipids, and changes in fatty acids were determined in liver, spleen, skin and tumor of DBA/1J mice bearing the lymphosarcoma at various days after injection of tumor cells.

The microwave-resonant-cavity technique was employes as a probe to determine the presence of molecular ions of helium in a d.c.-discharge, helium-plasma filament placed coaxially in a TM010 mode cavity. The cavity-resonance profile was displayed on an oscilloscope, and the nature of the perturbation of this resonance was used to determine the nature of the ions present in the plasma stream.

This study was an investigation of attitudes toward perceived values of physical activity among students and faculty within the Department of Health, Physical Education, and Recreation at North Texas State University. The specific purposes of this study were to determine if a significant difference in attitudes toward each of six values of physical activity exist (1) among men at four educational levels, (2) among women at four educational levels, (3) among undergraduate men who chose to major or minor in either health, physical education or recreation. (4) among undergraduate women who chose to major or minor in either health, physical education, or recreation, (5) between part-time and full-time faculty men, (6) between part-time and full-time faculty women, (7) among graduate men who work in either elementary, secondary, college, or recreation programs, and (8) among graduate women who work in either elementary, secondary, college, or recreation programs. Finally, the study was to determine if significant differences in attitudes toward perceived values of physical activity among subjects within each of twenty-six selected groups within the professional preparation program.

The problem with which this study is concerned is that of analyzing the implementation of the stated purposes of analyzing the implementation of the stated purposes of Lon Morris College of Jacksonville, Texas from 1847 to 1973. Histories and Journals of the period, records and publications of the school and other institutions, and oral interviews of persons involved in its development provide data for the study. As a historical analysis, the study is divided according to successive periods in the school's development.

The problem of this study was the development of a model for the certification requirements for vocational office education teacher coordinators in the United States. The data for this study were obtained from library research, documents provided by the state directors of vocational education and state departments of education, 62 questionnaires returned from randomly selected businesses and office education educators, and 735 questionnaires returned from randomly selected employed vocational office education teacher-coordinators.

The problem with which this study is concerned is that of constructing a system of selection and human resource development for small retailers of apparel and accessories. The study has a twofold purpose. The first is to determine the extent to which organized selection and training practices exist in small apparel and accessory retailing establishments, and the general attitude which small retailers of apparel and accessories express toward the value of selection and training functions. The second is to construct a practical system which can be used in small apparel and accessory retailing establishments.

Electron densities and collision frequencies were obtained on a number of gases in a dc discharge at low pressures (0.70-2mm of Hg). These measurements were performed by microwave probing of a filament of the dc discharge placed coaxially in a resonant cavity operating in a TM010 mode. the equipment and techniques for making the microwave measurements employing the resonant cavity are described.

This study had three main purposes. The first was to determine the perceptions of public school administrators toward desirability and toward feasibility of accountability items. The second was to determine the perceptions of public school teachers toward desirability and toward feasibility of accountability items. The third was to compare the perceptions of administrators with those of teachers and to indicate areas where they seemed to be in agreement or disagreement.

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