266 John Hogg, Esq., on (he Geography and 



trees, and under their shade. The last author observes, 

 {ibid, p. 14), " the water is beautifully clear, but it has a 

 slight sulphureous smell, with a strong saline and bitter taste. 

 On immersing a Fahrenheit's thermometer, it rose to 86°." 

 But Captain Newbold says (p. 71), he found the temperature 

 of this well, " 90°- 5', at the surface, and 91°-6', where the 

 water bubbles up from the limestone — (temperature of air 

 in shade = 84°). A few gaseous bubbles escape from the 

 bottom, which have but a very slight odour of sulphuretted 

 hydrogen, yet the water has very little saline taste." 



Again, he continues, — " the temperature of two wells which 

 lie on the other side of the town, viz., — Bir Eshesh, and Bir 

 Mussact, did not quite reach 80°.' ' 



Other mineral springs have been noticed in Wadi Araba, 

 which appear to contain salt and sulphur, but their waters, as 

 far as I can ascertain, have never been analysed. 



Whilst the wells in a great part of the peninsula afford 

 extremely bad water, being so frequently impregnated with 

 common salt : those, according to the testimony of Captain 

 Newbold, " which rise in the granite regions, are usually pure 

 and good. The water of the Mount Sinai district is de- 

 liciously cool and refreshing ;" it is, moreover, very abundant 

 throughout the entire year. 



The following are the heights of some of the principal 

 mountains, table-lands, plains, and valleys, or Wadis, chiefly 

 taken from Russegger's work : — 



English feet 

 above Sea. 



Gebel Jaraf in north of the desert El Tyh, . . 1300 



Level of Wadi Khereir on south side of the preceding mountain, 1080 



Gebel Eshrim, ...... 1700 



W. el Agaba, at south-west foot of do., . . . 1264 

 Station of Nakhl about half-way across the desert El Tyh on the 



pilgrim route, ..... 1488 



W. Woalechan, about 10 miles SSW. of Nakhl, . 1889 

 Elevation of the plain east of G. Heiyalah, and at nearly half of 



the distance between Nakhl and G. el Egmeh, . 2010 

 Regimm, situate 15-20 miles north-west of the Pass of Mureikhi, 26.56 



El Tyh summit nearly adjoining to Gebel-el-Egmeh, . 4615 



Convent on the present Mount Sinai, . . . 5451 



Gebel Mousa, ...... 7564 



Gebel Katherin, ..... 8705 



Gebel Masrud, ...... 8700 



G. um Schomar, ..... 8850 



