This volume contains the papers presented at the meeting of the Association of American Physicians in 1960. A wide variety of subjects is covered, and the quality of the research and writing is maintained at a high level. Anyone interested in recent advances in experimental medicine should find that at least some of the subjects touched on are of his special interest. Many of the papers are illustrated, all are accompanied by a list of references, and most are followed by a brief discussion. A complete list of members, past and present, the constitution of the organization, and the minutes of the meeting are included in the front of the book. There is an index.