. Missionary travels and researches in South Africa : including a sketch of sixteen years' residence in the interior of Africa, and a journey from the Cape of Good Hope to Loanda, on the west coast, thence across the continent, down the river Zambesi, to the eastern ocean. by its rushing waters; the trees are graduallydriven by the winds to the opposite side, and become embeddedin mud. The water of the lake is perfectly fresh when full, but brackishwhen low; and that coming down the Tamunakle we found tobe so clear, cold, and soft, the higher we ascended, that the ideaof melting snow was sugge
. Missionary travels and researches in South Africa : including a sketch of sixteen years' residence in the interior of Africa, and a journey from the Cape of Good Hope to Loanda, on the west coast, thence across the continent, down the river Zambesi, to the eastern ocean. by its rushing waters; the trees are graduallydriven by the winds to the opposite side, and become embeddedin mud. The water of the lake is perfectly fresh when full, but brackishwhen low; and that coming down the Tamunakle we found tobe so clear, cold, and soft, the higher we ascended, that the ideaof melting snow was suggested to our minds. We found thisregion, with regard to that from which we had come, to be clearlya hollow, the lowest point being Lake Kumadau; the point of theebullition of water, as shown by one of Newmans barometric ther-mometers, was only between 207|° and 206°, giving an elevationof not much more than two thousand feet above the level of thesea. We had descended above two thousand feet in comino- to itfrom Kolobeng. It is the southern and lowest part of the greatriver system beyond, in which large tracts of country are inundatedannually by tropical rains, hereafter to be described. A little ofthat water, which in the countries farther north produces inunda-. M P •n A <i •a , P, M a p o Is m Chap. III. THE NGAMI. 67 tion, comes as far south as 20° 20, the latitude of the upper endof the lake, and, instead of flooding the country, falls into thelake as into a reservoir. It begins to flow down the Embarrah,which divides into the rivers Tz5 and Teoughe. The Tzo dividesinto the Taniunakle and Mababe; the Tamunakle dischargesitself into the Zouga, and the Teoughe into the lake. The flowbegins either in March or April, and the descending waters findthe channels of all these rivers dried out, except in certain pools intheir beds, which have long dry spaces between them. The lakeitself is very low. The Zouga is but a prolongation of theTamunakle, and an arm of the lake re
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