great volume over its flanks, which comes rushing to meet that which is ejected by the eddy. The meeting of these two forces causes one to overlap the other, and in the conflict one advances or recedes continually, and the baffled volumes create vortices, around which are wheeling bodies of water of great velocity, until the cavities are filled, when the whole becomes replaced by watery masses rising like mounds. Every minute in endless and rapid succession these scenes transpire. Such a one commenced before our terrified eyes. A whirlpool had ceased revolving for a brief moment, and in its place there rose one of those mounds whose rising volumes and horrid noise inspired the desire to flee the scene. Fearing we should be unable to escape, I doffed coat, shoes, and belt, and motioning to Uledi to keep off, I shouted to the boat’s crew to do their best or die. Even had my actions not been sufficiently significant of our dangerous position, the stunning uproar would have informed them that we had been rash to approach the terrible scene. Therefore, following the upheaved and ejected waters, we retreated from the aqueous mound, for in its sudden subsidence lay danger, but were halted on the verge of the fatal pit which had now begun to replace the mound, and which angrily yawned behind the stern of our boat. Desperately we rowed, happily maintaining our position until a second convulsion occurred, by the efflux of which we finally escaped. The boat was by this time half full of water. Our repairs were found to have been utterly insufficient, and we resolved therefore upon returning to camp to renew the attempt in the new _Jason_, as its swiftness would enable us to force our way against the current of the eddy, and reach Massassa. When we returned to Mowa it was ten o’clock, and the boat-boys were fatigued with their desperate exertions, and, probably unwilling to risk the terrors of the river without fortifying themselves, had scattered to search for food. But, unable to control my anxiety about the reception of the Expedition by the Zinga chiefs, I concluded that, in the absence of Frank, it would be unwise to delay appearing at the new camp and secure their goodwill while we should be engaged with the passage of the several falls. I accordingly delivered my instructions to Manwa Sera, who had always shown himself a trustworthy man, saying, “When the boat’s crew have returned, give them that best light canoe—the _Jason_; tie ropes along the sides, with strong cables at each end. Tell them to keep close to the Mowa side, and pick their way carefully down river, until they come to Massassa. On arriving there Uledi will be able to judge whether it can be passed in a canoe, or whether we shall have to take the canoes over the rocks. Above all things tell him to be careful, and not to play with the river.”