The introduction of smallmouth black bass (Micropterus dolomieu) into lakes of Saskatchewan has been attempted unsuccessfully over a period of forty years but never in freshwater lakes of the Churchill River drainage. The need for better game fish in the newly established Prince Albert National Park led to the present experiment which was carried on under close observation. Adult bass were brought from Eastern Canada, confined in rearing enclosures screened off in protected bays and provided with artificial nests. Stocking was begun in 1936 and continued for five summers with some interruption. A total of 1,500 adults was transported and 260,000 fry have been reared. These have been released in Waskesiu and the Heart Lakes.