A novel Gram negative, capsule-forming bacterium was previously isolated in Dr. G. Roland Vela's laboratory. The distribution of this bacterium in soils from various locations was investigated. Soil samples from 188 locations around the world were examined. Isolates of the bacterium were obtained from 50 of these soils, with 48 of the isolates found in soils from the southwestern United States and northern Mexico. This suggests that this region is the natural habitat of the bacterium. The other two isolates were obtained from Madrid, Spain and Taipei, Taiwan. None were found in soils from South America or Australia. A lack of variation in morphology and physiological properties in the isolates suggests that a homogeneous population exists, even from widespread geographical locations.

The focus of this thesis is the relationship between immigration historiography and the history of Basque migration to the United States. The depictions of immigration presented by historians Oscar Handlin, Marcus Lee Hansen, and John Higham have been influential in immigration historiography and are presented in the first chapter. The second chapter contains a description of Old World Basque culture and the third chapter presents a brief history of Basque migration to the United States. The fourth chapter discusses to what extent the immigration theories presented in chapter one match the Basque experience in the New World. The concluding chapter contains some observations on the nature of immigration historiography, on the Basques, and on new directions for research.

Castilian law developed during the Reconquest of Spain. Women received certain legal rights to persuade them to move to the villages on the expanding frontier. These legal rights were codified in Las Siete Partidas, the monumental work of Castilian law, compiled in the thirteenth century. Under Queen Isabella, Castilian law became the law of all Spain. As Spain discovered, explored, and colonized the New World, Castilian law spread. The Recopilacidn de Los Leyes de Las Indias complied the laws for all the colonies. Texas, as the last area in North America settled by Spain, retained Castilian law. Case law from the Bexar Archives proves this for the Villa of San Fernando(present-day San Antonio). Castilian laws and customs persisted even on the Texas frontier.