ANNOTATIONS AND ADDITIONS. ] 13 



coast and the interior for parallel chains constituting a 

 greater and a lesser Atlas? All travellers familiar with 

 geognostical views, who have visited Algeria since it has 

 been taken possession of by the French, contest the meaning 

 conveyed by the generally received nomenclature. Among 

 the parallel chains, that of Jurjura is generally supposed 

 to be the highest of those which have been measured ; 

 but the well-informed Fournel, (long Ingenieur en chef des 

 Mines de rAlgerie), affirms that the mountains of Aures, 

 near Batnah, which were still found covered with snow at 

 the end of March, are higher. Fournel denies the 

 existence of a Little and a Great Atlas, as I do that of a 

 Little and a Great Altai (Asie Centrale, T. i. p. 247-252). 

 There is only one Atlas, formerly called Dyris by the Mauri- 

 tanians, and "tins name is to be applied to the " foldings/' 

 ("rides") or succession of crests which form the division 

 between the waters flowing to the Mediterranean, and those 

 which flow towards the Sahara lowland, ,The strike or 

 direction of the Eastern Mauritanian portion of the Atlas 

 is from east to west ; that of the elevated Atlas of Morocco 

 from north-east to south-west. The latter rises into summits 

 which, according to Renou, (Exploration Scientifique de 

 rAlgerie de 1840 a 1842, publiee par ordre du Gouverne- 

 ment, Sciences Hist, et Geogr. T. viii. 1846, p. 364 and 373), 

 attain an elevation of 10,700 Fr. (11400 Eng.) feet; 

 exceeding, therefore, the height of Etna. A singularly 

 formed highland of an almost square shape, (Sahab el 

 Marga), bounded on the south by higher elevations, is 

 situated in 33 lat. From thence towards the sea to 



VOL. I. I 



