It is the purpose of this thesis to consider the growth and urbanization of the Texas population since 1880, with primary emphasis on changes which took place during the decade from 1940-1950. The problem involved, therefore, in the second part of this study is to determine the amount of urbanization which took place in Texas during the 1940-1950 decade, to determine the variations among the several regions and "size groups" of cities, and to describe some of the factors related to such increases and variations.

The purpose of this research is to provide a descriptive study of selected social and psychiatric characteristics of adolescent first admissions to a private psychiatric hospital and an analysis of some of the inter-relationships among social, ecological, demographic and psychiatric variables selected for study.

"The purpose of this thesis is to examine the age structure of the population of Texas as it existed in 1960, and insofar as possible to trace important changes and trends in the older group from 1900 to 1960. The qualification derives from the fact that at this time not all of the data from the 1960 census are available, and hence many trends can be described only through 1950. Where appropriate, the structure and trends characteristic of the total population will be described, usually for comparative purposes."-- leaf 1.

The bracero programs of the 1942-1964 period have been the subject of a large amount of controversy. One side insists that foreign workers are necessary to the production of the nation's food and fiber while the other is just as certain that native workers will do the work required when paid a reasonable wage. This thesis will attempt to explore the principal issues involved in the controversy.

The primary purpose of this thesis is a description of some of the major changes which the population of Texas has undergone, particularly in the first half of the twentieth century. Other approaches are possible. For example, it is both possible and important to develop the relationship of population change to social problems. However, it is not the purpose of this thesis to investigate these relationships. It is the purpose here to view the population problem in almost entirely a factual sense, basing observations and interpretations on strictly demographic data.

Following Hawley's point of view regarding the definition and inclusiveness of human ecology, ecological data must include both a population and its characteristics and some measurements of the environment of this population. Following Hawley, an ecological investigation must select from available data and examine at least some of the relationships that may exist among these measurable population and environmental characteristics, in an effort to find and isolate the causes of mental disorders, particularly of those now called "functional."