The flow of the boiling water is quite constant throughout the year and the temperature is constant. My thermometer registered 95°C in the runway. Considerable steam rises from the water and when the air is still it is most difficult to obtain an unclouded photograph. The water is impregnated with hydrogen sulfid and a little carbon dioxid. This is true of most of the hot springs in the country. On our return to the city we passed near the Leper Hospital, an excellent modern structure located near the sea. None but physicians are allowed admission to visit. While the Teutonic races are quite free from this ancient disease, nevertheless it does exist in Norway, around the shores of the Baltic, in Iceland, Scotland and in those portions of the United States settled by Scandinavians. It seems to effect islands and sea-coasts and because of this it is often stated that the disease in Iceland has been perpetuated by eating tainted fish in times of famine. Credit is due the physicians of Iceland in not only controlling the plague but in actually obtaining a steady decrease. This disease goes hand in hand with tuberculosis, that is, lepers are usually tubercular. Until recently tuberculosis was prevalent in Iceland owing to the damp and unventilated houses especially on the farms. Thanks to the energetic crusade of the Icelandic doctors the conditions are rapidly improving and both leprosy and tuberculosis are decreasing. The Surgeon-General, Guðmundur Björnsson, told me with considerable pride that the percentage of tuberculosis in Iceland was now less than in Europe or the United States.