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Its longest leg, called the White Nile, pours out of Lake Victoria through Uganda's Owen Falls Dam, drops swiftly to the Sudan, where it snarls itself in the tangled vegetation of the Sudd�50,000 sq. mi. of swamp, amidst whose 14-ft.-papyrus thickets and convoluted blue ambatch flowers the river loses half its water in evaporation and drainage.

The bright yellow flowers of the ambatch, and of a tree resembling a laburnum, are in great profusion.

Reeds, similar in appearance to bamboos but distinct from them, big water-grass, like sugarcanes, excellent fodder for the cattle, and the ever-present ambatch, cover the morasses.

The natives navigate the river in two kinds of canoes-one of which is a curious combination of raft and canoe formed of the Ambatch wood, which is so light, that the whole affair is portable.

Marshes and ambatch, far as the eye can reach.