Merotoe — Aim Hamed. 37 At Meshra El Abiad there is a difficult, narrow passage between two rocky islands, with a very sharp turn.. Water very rapid, which continues until Um Deras Island is reached.

N.B. — The cataract marked on the official map as El Dermi was not recognisable at this time of the year. Um Deras Island is practically at the foot of what is termed the Gab El Abd, or 4th Cataract. It was from thence that a course by the left bank was followed by the river column in 1884-85. This channel was found to be so difficult and dangerous at high Nile, it was decided to examine thp channel by the right bank. This was found to be more easily navigable for steamers at this time of the year. It should, however, be noted that this channel, though navigable for steamers at high Nile, and undoubtedly the only channel to be followed with safety at that time, would be impassable at any other time of the year. As at low Nile, many parts of it are dry.

From Um Deras Island to the point marked Khor Abu Herejil (north bank) (A),* no great difficulties are encountered. At this point all guns, ammunition stores, and heavy gear of every description were taken out of the steamers and portaged to the camp of El Bana, a distance of about 2 miles.

The following arrangements were then made for passing the steamers over this cataract : — A wire hawser was fastened round the ship. Two hawsers were then led out of the steamer, one for hauling, and other to serve as a guy to steady her, and to prevent her bow from being taken round by the force of water.

About 600 yards up-stream, at the junction of a smaller channel (B), these hawsers were slipped, and the steamer reached the southernmost point of the next bend (C).

From this point to a point 1,100 yards up-stream (D) the greatest difficulties were met with, owing to the necessity of passing ropes on to the island 300 yards up-stream (E). As many men as could swim had to cross over to this island. The steamer was then hauled up to the southern end of the island.

The rope had now to be passed from the island (E) to point (D). At point (D) the haulage became very difficult, as the river thence, for 600 yards, to point (G), in mid-stream, is intersected by isolated rocks, upon which it was necessary to have groups of men in order to pass the rope from one rock to another. From point (G) the hawser was then led to the mainland. Guy ropes were used throughout.

After passing the rock marked (G) powerful steamers, of the " Zafir " class, were able to steam, without further haulage, to El Bana, but otherwise is was necessary to use ropes for hauling up to El Bana.

On leaving El Bana, the channel on the right bank was followed, and though the water was rapid in places, rushing between numerous small islands, no great difficulty was encountered until arrival at the foot of the Geridu (Geriddo) Rapids (;3J miles up). Here it was necessary to tie up to the bank in order that each steamer might pass over the rapid separately.

It will be seen that the channel takes a very sharp turn here (between points A and B) ; a large volume of water rushes with considerable force between an island (440 yards long, with a rock at the west end) and the south bank (a promontory on the south bank), where a rope was attached to a rock, and then gradually eased off to let the bow go round. From Geridu to Hosh El Geruf the channel is devoid of obstacles.

The channel taken was by the right, until El Shwadiyat was reached, whence it crosses to the left bank, and continues thus as far as Rakabat El Gamal ; here the river becomes a maze of small islands. The channel continues by the left (?) bank of Dulka Island (known by the natives as Dirbi), smaller islands being left on the starboard side.

The current thence became very strong, and continued so until Kirbekan Rapids was reached. At the bottom of these rapids the steamers were stopped, but the cataract, after examination, having been considered passable without haulage, each steamer went over it separately, in order to prevent any risk of one hampering another.

The main stream was then followed as far as Uss Rapids ; here the volume of water was very great. From the top of Uss Rapids the channel followed was by the left bank as far as Sherari Island, whence it passes by the right bank of that island, and thence between it and Shirri Island to the right bank of the river.

The river now becomes very broad, and navigation is practicable on either bank from Salamat to Hebi. From Hebi to Abu Selem the channel is by the left bank. In Huella Rapids there was a strong rush of water.

The river now becomes much intersected by small islands, and, though navigation is not very difficult, skilful pilotage is necessary.

Wood was found in the following places : — El Bana. Salamat. Hosh El Geruf. Abu Selem.

Uss village. Left bank, just below Mograt Island.

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