26th Dec.--Good breeze at about 3 A.M.; made sail. I have never seen a fog in this part of Africa; although the neighbourhood of the river is swampy, the air is clear both in the morning and evening. Floating islands of water-plants are now very numerous. There is a plant something like a small cabbage (Pistia Stratiotes, L.), which floats alone until it meets a comrade; these unite, and recruiting as they float onward, they eventually form masses of many thousands, entangling with other species of water-plants and floating wood, until they at length form floating islands. Saw many hippopotami; the small hill in the Dinka country seen from the masthead at 9.15 A.M.; breeze light, but steady; the banks of the river, high grass and mimosas, but not forest as formerly. Water lilies in full bloom, white, but larger than the European variety. In the evening the crew and soldiers singing and drumming. 27th Dec.--Blowing hard all night. Passed the Dinka hill at 3.30 A.M. Obliged to take in sail, as it buried the head of the vessel and we shipped much water. Staggering along under bare poles at about five miles an hour. The true banks of the river are about five hundred yards distant from the actual stream, this space being a mass of floating water-plants, decayed vegetable matter, and a high reedy grass much resembling sugarcanes; the latter excellent food for my animals. Many very interesting water-plants and large quantities of Ambatch wood (Anemone mirabilis)--this wood, of less specific gravity than cork, is generally used for rafts; at this season it is in full bloom, its bright yellow blossoms enlivening the dismal swamps. Secured very fine specimens of a variety of helix from the floating islands. In this spot the river is from 1500 yards to a mile wide; the country, flat and uninteresting, being the usual scattered thorn bushes and arid plains, the only actual timber being confined to the borders of the river. Course, always south with few turns. My sponging-bath makes a good pinnace for going ashore from the vessel. At 4.20 P.M. one of the noggurs carried away her yard--the same boat that met with the accident at our departure; hove to, and closed with the bank for repairs. Here is an affair of delay; worked with my own hands until 9 p.m.; spliced the yard, bound it with rhinoceros thongs, and secured the whole splice with raw bull's hide. Posted sentries--two on each boat, and two on shore.