and 206 Deg., giving an elevation of not much more than two thousand feet above the level of the sea.

We had descended above two thousand feet in coming to it from Kolobeng.

It is the southern and lowest part of the great river system beyond, in which large tracts of country are inundated annually by tropical rains, hereafter to be described.

A little of that water, which in the countries farther north produces inundation, comes as far south as 20d 20', the latitude of the upper end of the lake, and instead of flooding the country, falls into the lake as into a reservoir.

It begins to flow down the Embarrah, which divides into the rivers Tzo and Teoughe.