50 John Hogg, Esq., on the Geography and 



Proceeding from St Paul's to the SE., for near 15 miles, 

 the line of the primitive mountains is reached on the left, 

 whilst the secondary chain of Gebel Kallala, consisting of 

 limestone with ammonites, is continued on the right, or west. 

 South of Wadi Dthahal micaceous *cA2>^ approaching to ;^wem 

 occurs, and a little further, the primitive and sandstone, or 

 gritstone rocks join. Thence the secondary, or cretaceous 

 mountains, diverging to the south and south-west, gradually 

 decrease in altitude. 



Again, southwards, some more ancient copper-works are 

 noticed; and then, Gebel Horvashia, whose formation is 

 granite, rises a few miles off to the SE. ; in its natural basin 

 much good water is retained after rain. Wadi Abu Hadth 

 next attracts attention from its possessing a good deal of 

 fine herbage, and many gum-arabic trees. Of the granite 

 mountains in this region, Gebel Agrib, or Garib, or Gharib 

 (*' camel's hump ") is the loftiest, as it elevates itself to 

 about 6000 feet above the sea level ; and from its position it 

 forms a conspicuous landmark far out at sea. 



The ascent of this majestic mountain, from its steepness 

 and numerous ravines, is found to be fatiguing. Mr J. Wil- 

 kinson* describes it as follows : — 



" The first evening we reached the base of the highest cone, 

 where we slept, and ascended the next morning to the summit, from 

 which we had a view of the mountains on either side of the sea, and 

 the different plains. We tracked the gazelles very nearly to the 

 summit, and every now and then in the ravines found some solitary 

 plants growing under the shade of a projecting stone. The peaks of 

 this mountain resemble the Aiguilles near Mount Blanc ; but, to 

 equal that mountain in beauty, it requires the lower parts to be 

 covered with the woods and verdure of the Alps, and the desert plain 

 below to bo exchanged for the green meadows of Switzerland. I 

 calculate the height to be 5513 feet above the ravine in the plain 

 below, which is a few hundred feet above the level of the sea." 



About ten miles southward, Bir-el- Dara— the " Well of 

 Dara," below the mountain of that name, occurs ; there, like- 

 wise, copper scoriw, smelting furnaces, and miners' houses, 

 are observed. 



* Jottrnal of the Royal Geographical Society, vol. ii. p. 39. 



