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 purpose of this study is to expound the dilemma that, in spite of the huge wealth of Saudi Arabia, its drive for development and modernization is stumbling. This situation is due to a large extent to the country's severe administrative limitations.

"The Texas Failure sets forth the thesis that environmental problems are essentially a product of political decisions and that in Texas the political system has failed to respond to environmental problems because it is dominated by polluter-oriented special interests. The argument advanced is that polluter-oriented interests are well protected by state politicians in both the legislature and regulatory agencies of state government. The thesis is organized around an analysis of such political factors as ideology, leadership, decision making and law as they relate to a political consideration of Texas environmental conditions."-- leaf 1.

This essay attempts to fill some of the gaps in our knowledge of Corral's public life, especially for the period of his vice-presidency. It is divided into three parts, covering Corral's career in state and national politics and in exile.

Ramón Corral, Vice-President of Mexico from 1904 to 1911, was a crucial figure in the fall of the Porfiriato. As a politician, he worked diligently to preserve the Díaz regime. As the heir-apparent to the presidency after Díaz's death, Corral became a symbol against whom the opponents of the dictatorship of Díaz could rally. In spite of Corral's importance, he has been ignored by post-revolutionary Mexican historians - no biography of Crral has appeared since 1910. The secondary sources for the Porfiriato are inadequate to a study of Corral's career. Therefore, research centered mostly on primary sources, chiefly those in the Colección General Porfirio Díaz (Cholula, Puebla), Mexico City Newspapers, the Corral Papers in the Centro de Estudios Históricos (Mexcio City), and the Archivo General del Estado and Archivo Histórico in Hermosillo, Sonora. The Colección General Porfirio Díaz at the University of the Americas was the most important since this depository is the most extensive collection of materials on the Porfiriato and the one used least by scholars. This essay attempts to fill some of the gaps in our knowledge of Corral's public life, especially for the period of his vice-presidency. It is divided into three parts, covering Corral's career …

With the rising tensions and strains created by modern America, historians have sought diligently to discover the answers to industrial America's problems. One answer lay in American reform movements, and as the New Deal reforms came under fierce attack in the 1950's, liberal historians sought diligently to give to reform movements historical authenticity.