The country, as usual, dead flat, and very marshy on the east bank, upon which side I see no signs of habitations. Course this morning south. Arrived at the river Sobat junction at 12.40 P.M., and anchored about half a mile within that river at a spot where the Turks had formerly constructed a camp. Not a tree to be seen; but dead flats of prairie and marsh as far as the eye can reach. The Sobat is not more than a hundred and twenty yards in breadth. I measured the stream by a floating gourd, which travelled 130 yards in 112 seconds, equal to about two miles and a half an hour. The quality of the water is very superior to that of the White Nile--this would suggest that it is of mountain origin. Upward course of Sobat south, 25 degrees east. Upward course of the White Nile west, 2 degrees north from the Sobat junction. 4th Jan.--By observation of sun's meridian altitude, I make the latitude of the Sobat junction 9 degrees 21 minutes 14 seconds. Busy fishing the yard of the "Clumsy," and mending sails. The camels and donkeys all well--plenty of fine grass--made a good stock of hay. My reis and boatmen tell me that the Sobat, within a few days' sail of the junction, divides into seven branches, all shallow and with a rapid current. The banks are flat, and the river is now bank-full. Although the water is perfectly clear, and there is no appearance of flood, yet masses of weeds, as though torn from their beds by torrents, are constantly floating down the stream. One of my men has been up the river to the farthest navigable point; he declares that it is fed by many mountain torrents, and that it runs out very rapidly at the cessation of the rains. I sounded the river in many places, the depth varying very slightly, from twenty-seven to twenty-eight feet. At 5 P.M. set sail with a light breeze, and glided along the dead water of the White Nile. Full moon--the water like a mirror; the country one vast and apparently interminable marsh--the river about a mile wide, and more or less covered with floating plants. The night still as death; dogs barking in the distant villages, and herds of hippopotami snorting in all directions, being disturbed by the boats. Course west. 5th Jan.--Fine breeze, as much as we can carry; boats running at eight or nine miles an hour--no stream perceptible; vast marshes; the clear water of the river not more than 150 yards wide, forming a channel through the great extent of water grass resembling high sugarcanes, which conceal the true extent of the river. About six miles west from the Sobat junction on the north side of the river, is a kind of backwater, extending north like a lake for a distance of several days' boat journey: this is eventually lost in regions of high grass and marshes; in the wet season this forms a large lake. A hill bearing north 20 degrees west so distant as to be hardly discernible.