The problem of rheumatic diseases has become such an important one that in many countries, as in the United States, special committees have been formed to organize and correlate researches and to foster conferences presenting the results. This volume contains the proceedings of the third German conference, held at the Rheuma-Forschungs-Institut in Aachen, March 22 to 24, and is a sequel to the proceedings of the first and second conferences of 1928 and 1930, published in 1929 and 1931 respectively. It is edited by Dr. Walter Krebs, chief of the government spa and of the Rheuma-Forschungs-Institut, and contains the following papers by its distinguished contributors: investigations on the causes of rheumatic myocarditis, Ludwig Aschoff, Freiburg; the significance of bodily constitution in the disease picture of rheumatism, Ernst Edens, Düsseldorf; roentgen therapy for diseases of joints, Rudolf Grashey, Cologne: a contribution on the relationship of periosteum and fibrous tissue to rheumatic