"March 7.--Much difficulty in ascending the river, but upon arrival at the dry ground (called the 'dubba'), we found the No. 8 steamer and the whole fleet assembled, with the exception of six that are in sight. "March 8.--The other vessels arrived; I have thus thirty-four sail, including the two steamers. The entire country is swamp, covered with immensely high water-grass, beneath which the depth is considerable. The reputed main channel of the river is supposed to come from S.W., this is only denoted by a stream three or four feet broad, concealed by high grass, and in places choked by the Pistia Stratiotes. These surface plants, which resemble floating cabbages with fine thready roots, like a human beard of sixteen inches in length, form dense masses which are very difficult to clear "Our guides are useless, as we cannot depend upon their contradictory statements. We are in a deplorable position--the whole fleet in a cul-de-sac; the river has disappeared; an unknown distance of apparently boundless marsh lies before us; there is no wood, and there is no possibility of moving without cutting a channel. "I have ordered thirty vessels to form in line, single file, and to cut a canal. "March. 9.--The men worked famously, but I much fear they will be laid up with fever if kept at such an unhealthy task. To-day a force of 700 men cut about a mile and a half. They are obliged to slash through with swords and knives, and then to pull out the greater portion of the grass and vegetable trash; this is piled like artificial banks on either side upon the thick floating surface of vegetation. I took a small boat and pushed on for a mile and a half. I found a very narrow stream, like a small brook, which gave hopes of lighter labour for to-morrow. I shall therefore try to force the steamer through. Thirty-two men reported on the sick list this evening. "March 10.--A fine north wind for about half an hour, when it suddenly chopped round to the S.E. We cut on far ahead, so that I was able to push on the steamers and the whole fleet for a distance of about five miles. I had a touch of fever. "March 11.--Frightful stinking morass. All stopped at a black muddy pond in the swamp. The river is altogether lost. We have to cut a passage through the morass. Hard work throughout the day. One soldier died of sunstroke. No ground in which to bury him. "It is a curious but most painful fact that the entire White Nile has ceased to be a navigable river. The boundless plains of marsh are formed of floating rafts of vegetation compressed into firm masses by the pressure of water during floods. So serious is this obstacle to navigation, that unless a new channel can be discovered, or the original Nile be reopened, the centre of Africa will be entirely shut out from communication, and all my projects for the improvement of the country will be ruined by this extraordinary impediment.