marshes being within an hour's march. These salt marshes extend from the Lufubu to the westward, to the Lualaba to the eastward. The salt from this district supplies the whole country from Tanganyika to Kasai. I visited, among others, a rather curious salt-pit at the bottom of a dark narrow gorge of triangular shape.

Through this marsh, hot black brine was bubbling out of the ground over almost the whole surface; yet down the middle ran a stream of pure cold water, which had been banked up by the natives to prevent the fresh water diluting the brine. Two eagles on the cliff above looked as if they were stuffed; everything was hot and still; and even the men spoke only in whispers. In the middle of the silence half a dozen bullets suddenly hissed round, and the far side of the gorge filled almost instantaneously with