MOUNTAINS OF ATLAS. 98 Marocco to the foot of Atlas ; and it is two days' journey from the foot of Atlas to the snow, which constantly covers the summit of these immense mountains. They are thus seen at a distance of 245 miles : SO miles from land at sea. ISO do. Mogodor to Marocco. 35 do. Marocco to the foot of I the mountains. 70 do. the foot of Atlas to the snow.

seen at S45 miles distance.

In this calculation, the direct distance in the ascent of the mountain, is less than the travelling distance; but without taking notice of the distance from the border of the snow to the summit of this lofty mountain, which is said to be another day's journey, the one may balance the other : we may therefore calculate 70 miles as the direct longitudinal distance, although I am persuaded it is much more from the foot to the summit of that part of the Atlas which is visible at sea.

H. T. Colebrooke, Esq., in a paper inserted in the Asiatic Transactions, vol. xii. asserts, that it requires an elevation of 28,000 feet, for an object to be visible at the distance of 200 geographical miles ; now 245 English miles are equal to 211-J- geographical miles ; consequently, if Mr. Colebrooke be correct, the summit of Atlas, east of Marocco and Dimenet, which is