Publications have been issued from the different countries regarding the incidence of gallstones and the correlation of gallstones with various diseases. Up to the present there has been no such publication from Sweden, and it was principally for this reason, on the request of Prof. F. Henschen, of the pathologic department at the Karolinska Institute, that I undertook the preparation of this article. MATERIAL This treatise embraces the incidence of gallstones observed at autopsy at St. Erik's Hospital, Stockholm, Sweden, during a period of ten years, from the beginning of 1925 to the close of 1934, clinical symptoms observed in cases of gallstones, taken from the records of this hospital, and data on the distribution of the clinical cases of gallstones in Sweden during the same period, obtained from the annual reports of the public hospitals. The postmortem study was based on 6,575 autopsies, of which 3,351 were performed on