The portions of the river called Shigogo and Shipanga are bordered by a low level expanse of marshy country, with occasional clumps of palm-trees and a few thorny acacias. The river itself spreads out to a width of from three to four miles, with many islands, among which it is difficult to navigate, except when the river is in flood. In front, a range of high hills from the north-east crosses and compresses it into a deep narrow channel, called the Lupata Gorge. The Portuguese thought the steamer would not stem the current here; but as it was not more than about three knots, and as there was a strong breeze in our favour, steam and sails got her through with ease. Heavy-laden canoes take two days to go up this pass. A current sweeps round the little rocky promontories Chifura and Kangomba, forming whirlpools and eddies dangerous for the clumsy craft, which are dragged past with long ropes. The paddlers place meal on these rocks as an offering to the turbulent deities, which they believe preside over spots fatal to many a large canoe. We were slily told that native Portuguese take off their hats to these river gods, and pass in solemn silence; when safely beyond the promontories, they fire muskets, and, as we ought to do, give the canoe- men grog. From the spoor of buffaloes and elephants it appears that these animals frequent Lupata in considerable numbers, and--we have often observed the association--the tsetse fly is common. A horse for the Governor of Tette was sent in a canoe from Quillimane; and, lest it should be wrecked on the Chifura and Kangomba rocks, it was put on shore and sent in the daytime through the pass. It was of course bitten by the tsetse, and died soon after; it was thought that the _air_ of Tette had not agreed with it. The currents above Lupata are stronger than those below; the country becomes more picturesque and hilly, and there is a larger population.