town does not exceed 7,000, which, however, is doubled when the peasantry return from their fields in the neighbourhood.

To travellers coming from the north, who are accustomed to houses with

Fig. 93. — Dongola and the Third Cararact.
Scale 1: 800,000,

terraces, Dongola offers a great surprise. They notice the inclined roofs, which immediately point out the change in the climate, the transition from the dry zone to that of the periodical summer rains. They also observe the incessant work of