mountain tribes, those of Ida Mahmoud, to the east of the valley, taking part with Mtouga, and those of Ida Ziki, on the west side, holding with Haha. It was impossible to get any reliable information as to the nature of the country along the mountain road. According to one informant the distance to Tarudant may be traversed in two days, while another declared that time to be necessary to reach the summit of the pass. It seems certain that the main chain in approaching its western termination has a less regular structure than in the part nearer Marocco. It throws out numerous diverging ridges; the peaks, while inferior in absolute height, are more isolated; and the valleys, or at least that of Imintanout, now opening in front of us, seem to be more deeply excavated. We certainly heard the names of the two mountains mentioned above, which appear on Beaudouin’s map; but no name at all resembling Djebel Aithadius, which M. Balansa gives for one of the higher snow-seamed peaks in this part of the range. We were here again struck by the difficulty of catching the sounds from native lips, a feat to be achieved only by repeated trials. At a first essay two Europeans will often write down a name in ways so utterly different that they cannot be recognised as intended to represent the same sound. Though some of the Shelluhs understand and use the word _Gebel_ (or _Djebel_) for a mountain, the native word, at least in this district, seems to be certainly _Ida_, probably connected with _Idrarn_, the plural form of _Adrar_, a mountain. Idrarn Drann is the name given by the Shelluhs to the whole, or some considerable portion, of the Atlas range; and etymologists, when they come to know more of the Bereber dialects, may consider whether the name Dyris, by which this part of the Atlas was known to the Romans, is connected with the same root. Captain Beaudouin, the author of the French map, seems to have been misled by natives of this region, who would sometimes call a great mountain well known to them by the generic name _Ida_, and sometimes by a special local name, and was thus led to consider these as alternative names. Thus he writes the names of three mountains, Ida _ou_ Ziki, Ida _ou_ Mahmoud, and Ida _ou_ Mahmed.