this time — early in April — not within many feet of the highest watermark. This river empties itself directly into the Lualaba. There is no sign whatever of Lake Lanchi, which is marked in so many maps at this point.

Nor is there even a broadening of the Lualaba which could be mistaken for a lake either above or below the mouth of the Lukuga. We found the mouth of the river, which here forked, partially blocked by a delta about half a mile wide and a mile and a half long. The river above the delta was about ten feet deep, with perfectly clear water, and varied from a mile and a quarter to a mile in width, with the same depth right across. Long grass was growing in a great portion of it, and there were no signs of swamp about its banks. Some miles up the river we were brought almost to a standstill by the