The Ogobay is formed by the junction of two considerable streams of the interior—the Rembo Ngouyai and the Rembo Okända. The first I partly explored; of the Rembo Okända I know only by report of the natives, who state tbat it is much larger than the Ngouyai, and that its navigation is in some places partly obstructed by vast rocky boulders, which, scattered about the hill-sides and on the higher plains of the in¬ terior, form a very remarkable and peculiar feature of the land¬ scape