Arab and other travellers unaccustomed to the country at first suffer from the climate, which must not, however, be condemned. They complain of the tourbillons, the swarms of flies, and the violent changes from burning heat to piercing cold, which is always experienced in that region when the thermometer sinks below 60°-55° F. Their thin tents, pitched under a ragged calabash, cannot mitigate the ardour of an unclouded sun; the salt-bitter water, whose nitrous and saline deposits sometimes tarnish a silver ring like the fumes of sulphur, affects their health; whilst the appetite, stimulated by a purer atmosphere and the coolness of the night air, is kept within due bounds only by deficiency in the means of satisfying it. Those who have seen Africa further west, are profuse in their praises of the climate on their return-march from the interior. The mukunguru, or seasoning fever, however, rarely fails to attack strangers. It is, like that of the second region, a violent bilious attack, whose consequences are sleeplessness, debility, and severe headaches: the hot fit compared with the algid stage is unusually long and rigorous. In some districts the parexia is rarely followed by the relieving perspiration; and when natural diaphoresis appears, it by no means denotes the termination of the paroxysm. Other diseases are rare, and the terrible ulcerations of K’hutu and Eastern Usagara are almost unknown in Ugogo. There is little doubt that the land, if it afforded good shelter, purified water, and regular diet, would be eminently wholesome.