This is the latest volume in a series that began in 1939. Since 1962, the reports have been published each year and have been uniformly excellent in selection of essayists and material. This is true also of the present volume. In essence, the book is composed of four parts with an introduction by Kallos. In a delightfully conversational preface, he relates the more impressive investigative events of the year involving problems of hypersensitivity and immunology.
The author of the first section, "Mediators of the Arthus and Related Reactions," is Charles G. Cochrane, who points out that great strides are being made in the analysis of host's factors which, after activation by inciting agents, react sequentially to bring about tissue damage. The three immunological reactions that have been studied comprehensively thus far and which indicate a sharing of the host mediators responsible for tissue injury are the Arthus reaction, acute glomerulitis