It has been known for some years that a were Norwegian residents carefully of Oslo in 1890-1910 planned re-study was being made in Oslo of Boeck's patients). The (1.404 actual collection of data was famous the results preceded by extensive group of untreated syphilitics, of study of possible sources of which have been recently in full information, published (Gjestland, orderly methods of tracing, and careful A and 1955). recent preview by Clark Danbolt provision for the collection and recording of infor- (1955) indicates that Gjestland's monograph com- mation, together with an outline for the analysis prises 500 pages, 83 Tables, and twelve illustrations of the data to be collected. To these meticulous with an with annex of seventy pages thirty Tables epidemiological techniques may be attributed the and two illustrations. The re-study is comprehen- highly successful achievement of obtaining usable sive, uses a modern epidemiological approach, and information in about 80 per cent. of the main study is reported to be a model of meticulously planned group of 1,404 persons. Among other items, and carefully conducted retrospective field research. Gjestland's study has provided answers respecting Between 1890 and 1910, Boeck, then Professor of the incidence of clinical relapse, benign late syphilis, Venereology and Dermatology in Oslo, hospitalized cardiovascular and neurosyphilis, and the role of about 2,000 patients with primary and syphilis in the morbidity and secondary mortality of syphilitics. syphilis until their lesions healed without He estimates that between sixty and specific seventy out of treatment. He adopted this policy...