The poor creature sprang to its feet, and screaming with agony, dashed at full gallop across the desert in a frantic state, with the fire scorching its flesh, and doubtless making it uncomfortable for the maggots. Fire is the Arabs' vade mecum; the actual cautery is deeply respected, and is supposed to be infallible. If internal inflammation should attack the patient, the surface is scored with a red-hot iron. Should guinea-worm be suspected, there is no other course to pursue than to burn the suffering limb in a series of spots with a red-hot iron ramrod. The worm will shortly make its appearance at one of these apertures after some slight inflammation and suppuration. This fearful complaint is termed Frendeet in the Soudan, and it is absorbed into the system generally by drinking foul water. At the commencement of the rainy season, when the ground has been parched by the long drought of summer, the surface-water drains into the hollows and forms muddy pools. The natives shun such water, as it is almost certain to contain the eggs of the guinea-worm. These in some mysterious manner are hatched within the body if swallowed in the act of drinking, and whether they develop in the stomach or in the intestines, it is difficult to determine, but the result is the same. The patient complains of rheumatic pains in one limb; this increases until the leg or arm swells to a frightful extent, accompanied by severe inflammation and great torment. The Arab practitioner declares that the worm is at work, and is seeking for a means of escape from the body. He accordingly burns half a dozen holes with a red-hot iron or ramrod. In a few days the head of the guinea-worm appears; it is immediately captured by a finely-split reed, and by degrees is wound like a cotton thread by turning the reed every day. This requires delicate manipulation, otherwise the worm might break, and a portion remain in the flesh, which would increase the inflammation. An average guinea-worm would be about three feet in length. Animals do not appear to suffer from this complaint, although they are subject to the attacks of great varieties of parasites. Elephants are frequently troubled with internal worms. I witnessed a curious instance of the escape of such insects from the stomach through a hole caused by a bullet, nevertheless the animal appeared to be in good condition.