It is difficult to write a short review on a book so replete with factual statements and covering such a vast field. In the general part the author discusses focal infections, their localization and relation to joint diseases, dissemination, immunity, and the curative effect of removal of foci. Then follows a review of the field of allergy in relation to chronic arthritis, the blood picture and sedimentation time, the general roentgenologic appearance of arthritis, and a classification. The second part is devoted to a thorough presentation of the clinical pathology and pathologic anatomy of the different forms of arthritis. In the infectious type (group 1) the primary and secondary chronic arthritis, including Still's disease, are described; the noninfectious type (group 2), or arthrosis, is divided into osteo-arthrosis deformans in the stricter sense and the arthrosis due to metabolic changes and glandular deficiency, neurogenic arthrosis, the primary osseous arthrosis. There is