Towards evening, as the stream narrowed, the spectacle was imposing. The avenues and trees stood up like walls, but living walls; and in places their billowy bulges seemed about to burst upon us like Cape-rollers. Every contrast was there of light and dark, short and tall, thick and thin; of age and death with lusty youth clinging around it; of the cocoa's drooping frond and the aspiring arm of bombax, the silk-cotton-tree, which rains brown gossamer when the wind blows; of the sloth-tree with its topping tuft, and the tangled mantle of the calamus or rattan, a palm like a bamboo-cane. The bristly pod of the dolichos (_pruriens_) hangs by the side of the leguminosae, from whose flattened, chestnut-coloured seeds snuff-boxes are made further east. It was also a _floresta florida_, whose giants are decked with the tender little blossoms of the shrub, and where the bright bracts and yellow greens of this year's growth light up the sombre verdure of an older date. The type of this growth is the red camwood-tree, with its white flower of the sweetest savour. Imagine an English elm studded with pinks or daisies, gardenias or hyacinths. There is nothing more picturesque than the shiftings and changes of aspect upon these African streams, which at first seem so monotonous. After dawn the smoking water, feeling tepid to the hand and warmer than the atmosphere, veils the lower levels and makes the forest look as if based on air. Noon brings out every variety of distance with startling distinctness, and night, especially moonlit night, blurs with its mists long tracts of forest, rains silver over the ridges, and leaves the hollows in the blackest shade. Seen from above, the sea of trees looks like green water raised to waves by the wind, and the rustling in the breeze mimics the sound of distant surf. A catamaran of four cork-trees, a cranky canoe, the landing-place of a bush-road, a banana-plantation, and a dwarf clearing, where sat a family boiling down palm-nuts for oil, proved that here and there the lowland did not lack lowlanders. The people stared at us without surprise, although this was only the fourth time they had seen a surf-boat. The river-bed, grid-ironed with rocky reefs, showed us twenty-two turns in a few miles; some were horseshoe-bends, sweeping clean round to the south, and one described a curve of 170º. After slow and interrupted paddling for an hour and a half, at 6 P.M., when night neared, we halted at the village of Esubeyah, or 'Water-made;' [Footnote: The radical of water is 'su,' curiously corresponding with Turkish and with that oldest of the Turkish tongues, Chinese.] and my companion made sure of his distances by a latitudinal observation of Canopus.