Another massive tower, of a conical form, surmounts the front wall. It is about thirty feet high. On the dome, projecting pieces of wood are perceptible, the use of which seems to be to unite the masonry.
The roof of the mosque has a terrace like that of the tower, and is moreover surrounded with a parapet eighteen inches high.
The roof of the building is supported by rafters, formed of the trunks of the ronnier tree split into four, and placed at the distance of a foot from each other. Pieces of salvadora wood, brought from Cabra, where it grows in great abundance, cut to the length of the intervals between the rafters, are placed obliquely in double rows, crossing each other. Over these are laid mats made of the leaves of the ronnier, which are covered with earth.
This mosque has five gates of different sizes on the eastern side, three on the south side, and two on the north. On the western side the ruins form at once the boundary of the mosque and of the city. On the eastern and northern sides, the floor of the building is level with the ground; but on the south is an ascent of four steps.
On the eastern wall, in the interior of the building, there are some ornaments made of yellow clay. They are in the form of a chevron or triangular festoon, two feet high, with an opening of a foot and a half. They commence about eighteen inches above the ground. The pillars supporting the arcades in front, have some ornaments of the same material tolerably executed, but very much defaced. A kind of niche, in the centre of the eastern wall, is destined for the marabout who officiates at prayers. In another similar niche there is a large wooden pulpit, into which the priest ascends by two or three steps, on the days when he reads certain passages of the Koran. The floor of the mosque was covered with mats, on which the people kneel during prayers.
Conceiving that the description alone would not convey an adequate idea of the construction of this mosque, I ventured to make a sketch of it, as well as of the town; both would, I thought, convey a better idea than words alone of the objects with which I wish to make the reader acquainted[8].
To make my sketch of the mosque, I sat down in the street in front of it, and, covering myself in my large wrapper which I folded over my knees, I held in my hand a sheet of white paper close to a leaf of the Koran. When I perceived any one approaching, I hid my drawing, and looking at the leaf of the Koran I appeared to be absorbed in devotion. The passers-by, far from suspecting me, regarded me as one of the elect, and applauded my zeal[9].
The eastern mosque is much smaller than that on the western side. It is surmounted by a square tower, similar in form and dimensions to that of the western mosque. The walls are entirely stripped of their parget. Many buttresses have been erected to support the building. It has three arcaded avenues. The galleries are six feet wide and thirty feet long.
