"March 12.--I think I can trace by telescope the fringe of tall papyrus rush that should be the border of the White Nile; but this may be a delusion. The wind is S.W., dead against us. Many men are sick owing to the daily work of clearing a channel through the poisonous marsh. This is the Mahommedan festival of the Hadj, therefore there is little work to-day. "March 13.--Measured 460 yards of apparently firm marsh, through which we plumbed the depth by long poles thrust to the bottom. "Flowing water being found beneath, I ordered the entire force to turn out and cut a channel, which I myself superintended in the advance boat. "By 6 p.m. the canal was completed, and the wind having come round to the north, we sailed through the channel and entered a fine lake about half a mile wide, followed by the whole fleet with bugles and drums sounding the advance, the troops vainly hoping that their work was over. The steamers are about a mile behind, and I have ordered their paddles to be dismounted to enable them to be towed through the high grass in the narrow channel. "March 14.--At 6 a.m. I started and surveyed the lake in a small rowing boat, and found it entirely shut in and separated from another small lake by a mass of dense rotten vegetation about eighty yards in width. I called all hands, and cleared it in fifty-five minutes sufficiently to allow the fleet to pass through. Upon an examination of the next lake, I found, to my intense disappointment, that not only was it closed in, but there was no outlet visible even from the mast-head. Not a drop of water was to be seen ahead, and the entire country was a perfect chaos, where the spirit of God apparently had not yet moved upon the waters. There was neither earth nor clear water, nor any solid resting-place for a human foot. Now and then a solitary bittern rose from the marsh, but, beyond a few water-rails, there were no other birds. The grass was swarming with snakes, and also with poisonous ants that attacked the men, and greatly interfered with the work. "It is easier to clear a passage through the green grass than through the rotten vegetation. The former can be rolled in heaps so as to form banks, it is then secured by tying it to the strong grass growing behind it; the rotten stuff has no adherence, and a channel closes up almost as fast as it is made, thus our labour does no permanent good. I am in great anxiety about Mr. Higginbotham; it will be impossible for him to proceed by this route, should he arrive with a comparatively small force and heavily-laden vessels. "As the channel closes so rapidly, I must wait until the steamers can form a compact line with the fleet.