On the way back I passed a magnificent waterfall which I had not previously heard of. The whole volume of the river roared and tumbled in great masses of foam over the naked black rock, plunging down some twelve or fifteen feet in a yeasty smother, accompanied by a thunderous roar which effectually precluded any attempt at conversation in the immediate vicinity. At the foot of the fall the water boiled and swirled in a great pool. Waves several feet high were thrown against each other by the violence of the water, which was seemingly gathering strength for its fierce mad rush through the only outlet from the pool, a narrow channel with perpendicular sides, and about 60 feet across, cut through the solid rock. Large rugged trees hung over the falls and round the edges of the pool, their leaves dripping moisture from the hissing clouds of spray cast high in the air upon every side, the whole forming a scene of savage grandeur, wonderfully impressive, and not easily forgotten. CHAPTER XXI. (CONCLUSION.) _FROM THE RIVER TANA TO NAIROBI._ Arrival at the Tana river—A visit to M’biri—Crossing the Tana—Smallpox—I give Ramathani a fright—Peculiar method of transporting goods across the river practised by the Maranga—Kati drowned—The safari across—M’biri—Disposal of the sheep—We resume the march—The Maragua once more—The Thika-Thika—The swamps—Kriger’s Farm—Nairobi. Early the next morning we sallied forth from our tents and spent an hour and a half in the water of the brook, getting the sheep across. They were unable to face the stream, and each separate animal required to be passed across from hand to hand, the labour involved being very great. We then went on to the Tana and camped beside the ford. In the afternoon we got our Alpine rope out, and with considerable trouble and some risk succeeded in getting one end of it across the river and made fast to a tree on the opposite bank, Jumbi with two or three other men and myself swimming across the river for the purpose. It was not until I was actually in the water that I realized the tremendous power of the current. We had to go a long way up stream before plunging in, as the swift current carried us rapidly down river, and, but for this precaution, would have swept us past the only landing-place on the other side. This made rather a long swim of it. I was horribly afraid of the presence of crocodiles, but fortunately they were conspicuous by their absence.