Zambesi Expedition | Page 7

as surveyor, we reached the East Coast in the following May.
Our first object was to explore the Zambesi, its mouths and tributaries, with a view to their being used as highways for commerce and Christianity to pass into the vast interior of Africa. When we came within five or six miles of the land, the yellowish-green tinge of the sea in soundings was suddenly succeeded by muddy water with wrack, as of a river in flood. The two colours did not intermingle, but the line of contact was as sharply defined as when the ocean meets the land. It was observed that under the wrack--consisting of reeds, sticks, and leaves.--and even under floating cuttlefish bones and Portuguese "men-of-war" (Physalia), numbers of small fish screen themselves from the eyes of birds of prey, and from the rays of the torrid sun.
We entered the river Luawe first, because its entrance is so smooth and deep, that the "Pearl," drawing 9 feet 7 inches, went in without a boat sounding ahead. A small steam launch having been brought out from England in three sections on the deck of the "Pearl" was hoisted out and screwed together at the anchorage, and with her aid the exploration was commenced. She was called the "Ma Robert," after Mrs. Livingstone, to whom the natives, according to their custom, gave the name Ma (mother) of her eldest son. The harbour is deep, but shut in by mangrove swamps; and though the water a few miles up is fresh, it is only a tidal river; for, after ascending some seventy miles, it was found to end in marshes blocked up with reeds and succulent aquatic plants. As the Luawe had been called "West Luabo," it was supposed to be a branch of the Zambesi, the main stream of which is called "Luabo," or "East Luabo." The "Ma Robert" and "Pearl" then went to what proved to be a real mouth of the river we sought.
The Zambesi pours its waters into the ocean by four mouths, namely, the Milambe, which is the most westerly, the Kongone, the Luabo, and the Timbwe (or Muselo). When the river is in flood, a natural canal running parallel with the coast, and winding very much among the swamps, forms a secret way for conveying slaves from Quillimane to the bays Massangano and Nameara, or to the Zambesi itself. The Kwakwa, or river of Quillimane, some sixty miles distant from the mouth of the Zambesi, has long been represented as the principal entrance to the Zambesi, in order, as the Portuguese now maintain, that the English cruisers might be induced to watch the false mouth, while slaves were quietly shipped from the true one; and, strange to say, this error has lately been propagated by a map issued by the colonial minister of Portugal.
After the examination of three branches by the able and energetic surveyor, Francis Skead, R.N., the Kongone was found to be the best entrance. The immense amount of sand brought down by the Zambesi has in the course of ages formed a sort of promontory, against which the long swell of the Indian Ocean, beating during the prevailing winds, has formed bars, which, acting against the waters of the delta, may have led to their exit sideways. The Kongone is one of those lateral branches, and the safest; inasmuch as the bar has nearly two fathoms on it at low water, and the rise at spring tides is from twelve to fourteen feet. The bar is narrow, the passage nearly straight, and, were it buoyed and a beacon placed on Pearl Island, would always be safe to a steamer. When the wind is from the east or north, the bar is smooth; if from the south and south-east, it has a heavy break on it, and is not to be attempted in boats. A strong current setting to the east when the tide is flowing, and to the west when ebbing, may drag a boat or ship into the breakers. If one is doubtful of his longitude and runs east, he will soon see the land at Timbwe disappear away to the north; and coming west again, he can easily make out East Luabo from its great size; and Kongone follows several miles west. East Luabo has a good but long bar, and not to be attempted unless the wind be north-east or east. It has sometimes been called "Barra Catrina," and was used in the embarkations of slaves. This may have been the "River of Good Signs," of Vasco da Gama, as the mouth is more easily seen from the seaward than any other; but the absence of the pillar dedicated by that navigator to "St. Raphael," leaves the matter in doubt. No Portuguese live within eighty miles of any mouth