The genetic structure of 26 natural populations of three species (S. tridecemlineatus, S. mexicanus, and S. spilosoma) of the Ictidomys subgenus of ground squirrels was analyzed using chromosomal and electrophoretic techniques. Chromosomal variation was not observed in S. mexicanus, and only slight karyotypic variation was found in the other two species. Chromosomal evidence indicated hybridization between S. tridecemlineatus and S. mexicanus, placing these species within the classical definition of semispecies. Analysis of electrophoretic variation at 29 genetic loci indicated close genetic relationships between these species. Evolution in Ictidomys appears to be linked with Pleistocene events, and speciation appears to have occurred within the last 155,000 years.

This thesis concerns the utility of including the art of hand lettering in a curriculum of a university advertising art program. Data secured from 155 questionnaires sent to 266 advertising firms in five states were analyzed by simple descriptive statistics including frequency counts and percentages. Two hypotheses were examined, and it is concluded that hand lettering is still needed in advertising art and should be taught in university art programs.

This investigation compares the results of three different methods of teaching tumbling, the Trampoline Method, Mental Practice, and the Traditional Method. The study also investigates whether sex and ability level significantly affect the results of the teaching methods. The subjects were the ninety members of the junior-level gymnastics classes for physical education majors at New Mexico State University during the fall and spring semesters of the 1972-1973 school year. There were forty-five female and fortyfive male subjects. A stratified random sample was constructed to insure equality of the teaching-method groups. The motor educability scores of the Johnson-Metheny Test were used to develop high-, medium-, and low-ability groups. The subjects in the ability groups were randomly selected and assigned to one of the teaching methods.

The purposes of this study were to analyze and describe leisure activities, in order to provide useful data for school administrators, teachers, and writers of textbooks for Indian children. Particular consideration will be given in this field research to the following questions: 1. What are Taos Indian children's preferences for leisure activities? 2. Do children of the same Pueblo but of different sex have similar leisure activities?