GUINEA WORM. 155 several feet long. Great cleanliness is said to be a preventive ; Dr. Horton recommends thirty drops of the tincture of assafoetida to be given three times a day to persons suffering from the worm. It certainly has no ill-effects, and may be beneficial.

Single worms, though causing much pain and annoyance, do not seem to be fatal ; but when twenty and thirty are present, as I saw in some cases, the prognosis is very bad. Travellers in districts infested by the worm should be most careful in drying themselves after being in the water, and should avoid resting their arms or legs on the bare ground. I may mention that the natives use a plant called Goak. A strong solution of the leaves is taken daily ; moreover, the part affected is washed with the solution.

The people at Djour Ghattas suffer from severe fevers, which are usually intermittent. I treated many of these cases, and found in some instances that quinine was of little use, but Warburg's tincture was very beneficial in several bad attacks.

It may be interesting to describe how a small-pox patient is treated by the Bongo and Djour tribes.

The person is promptly isolated, being placed in a hut apart from others, the floor of which is covered with sand, and kept constantly very warm by fires.

The diet of the patient is milk and water, or small quantities of gruel made of dhurra grain. As soon as the pustules are well formed, each is opened