Keeping well out toward the centre of the stream, and paddling steadily, we now made rapid progress in a northerly direction, the river gradually widening and shoaling as we went, until, by the time of sunset, we found ourselves progressing up a comparatively narrow deep-water channel with wide expanses of shallow water on either side of us, dotted here and there with dry patches of mud or sand upon which crocodiles lay basking, in some cases in groups of as many as six or eight together, while occasionally the great head of a hippopotamus appeared for a moment, only to vanish again with a little eddying swirl of the mud-charged water as the creature dived.
