Towards evening, hundreds of pretty little hawks (_Erythropus vespertinus_) are seen flying in a southerly direction, and feeding on dragon-flies and locusts. They come, apparently, from resting on the palm-trees during the heat of the day. Flocks of scissor-bills (_Rhyncops_) are then also on the wing, and in search of food, ploughing the water with their lower mandibles, which are nearly half an inch longer than the upper ones. At the north-eastern end of the marsh, and about three miles from the river, commences a great forest of palm-trees (_Borassus AEthiopium_). It extends many miles, and at one point comes close to the river. The grey trunks and green tops of this immense mass of trees give a pleasing tone of colour to the view. The mountain-range, which rises close behind the palms, is generally of a cheerful green, and has many trees, with patches of a lighter tint among them, as if spots of land had once been cultivated. The sharp angular rocks and dells on its sides have the appearance of a huge crystal broken; and this is so often the case in Africa, that one can guess pretty nearly at sight whether a range is of the old crystalline rocks or not. The Borassus, though not an oil-bearing palm, is a useful tree. The fibrous pulp round the large nuts is of a sweet fruity taste, and is eaten by men and elephants. The natives bury the nuts until the kernels begin to sprout; when dug up and broken, the inside resembles coarse potatoes, and is prized in times of scarcity as nutritious food. During several months of the year, palm- wine, or sura, is obtained in large quantities; when fresh, it is a pleasant drink, somewhat like champagne, and not at all intoxicating; though, after standing a few hours, it becomes highly so. Sticks, a foot long, are driven into notches in the hard outside of the tree--the inside being soft or hollow--to serve as a ladder; the top of the fruit-shoot is cut off, and the sap, pouring out at the fresh wound, is caught in an earthen pot, which is hung at the point. A thin slice is taken off the end, to open the pores, and make the juice flow every time the owner ascends to empty the pot. Temporary huts are erected in the forest, and men and boys remain by their respective trees day and night; the nuts, fish, and wine, being their sole food. The Portuguese use the palm-wine as yeast, and it makes bread so light, that it melts in the mouth like froth.