An acknowledged expert on the history of modern pharmacology and drug therapy, John Parascandola here brings together 19 of his most important papers on these subjects. The book is divided into three topical sections. In the first group of articles, devoted to pharmacological theory, Dr. Parascandola sheds new light on our understanding of the history of such key pharmacological concepts as receptor theory, structure-activity relationships, and the role of stereochemistry in physiological action. The second section focuses on the discipline of pharmacology and offers insights into the pivotal role played by John J. Abel in the shaping of the field, the development of pharmacology in schools of pharmacy and in the Federal Government, and the national pharmacological society's membership ban on pharmacologists working in industry. The final section on drug therapy discusses various drugs from antibiotics to sulfones, and their use in the treatment of diseases such as leprosy and syphilis.