The flora of the surrounding country is very picturesque: tamarinds, mimosas, climbing plants, the papyruses, and the euphorbias thrive in unchecked luxuriance, as they have thriven for countless centuries, and blend together their thick growth of various foliage. The colouring of the flowers is often so intense that the eye aches in contemplating it. It should be added that the euphorbia, which is very common in this region, yields a poisonous milky juice, in which the natives dip their arrows. A scratch from one of these envenomed weapons will rapidly prove mortal. Beyond Lake Nû, the White Nile breaks into an intricate series of curves and meanders, pouring its waters downwards with violent swiftness. Such, indeed, was the strength of the flood, that the steamer was compelled to throw off the towing-rope of the two dahabiehs, and the sailors and servants landed in order to haul them against the stream. But in the greatest stress of the current the rope broke, and the boats, drifting away, were threatened with destruction. Osman Aga, a resolute and courageous soldier, who was on the deck of the steamer, seized another rope and leaped instantly into the river. With vigorous strokes he made for the shore. He had almost gained it, and had flung the rope to his expectant comrades, when he suddenly disappeared. After a while his dead body was found, and immediate preparations were made to give it an honourable burial. Wrapped round, according to the custom of the country, with twenty yards of calico, it was interred, in the presence of the whole crew, at the foot of a patriarchal tree, on the trunk of which was cut a commemorative inscription. Some days after this melancholy event, the expedition ascended the river to Heiligenkreuz, where some Austrian Catholic missionaries have founded a settlement. Remaining there until the 15th of September, Alexina Tinné made a short excursion into the interior, crossing rivers, traversing forests, and meeting with numerous villages, half hidden in leafiness.