268. Plan of Church at Djemla. Scale 50 ft. to 1 in.
tained on the subject. Meanwhile too much attention can hardly be bestowed upon it, as it is by means of these early specimens of architectural art that we shall probably be best able to recover the primitive forms of the Christian liturgical observance. One of the most ancient as well as interesting of the African churches which has yet been brought to light is that at Djemla. It is a simple rectangle, internally 92 ft. by 52, divided longitudinally with three aisles, the centre one of which terminates in a square cella or choir, which seems to have been enclosed up to the roof; but the building is so ruined that this cannot be known for a certainty. Though so exceptional, it is not difficult to see whence the form was derived. If we take such a plan, for instance, as that of the Maison Carre at Nimes (Woodcut No. 187), and build a wall round and put a roof over it, so as to make a building which was originally appropriated to external worship suitable for internal religious purposes, we should have exactly such a result as this. The cella must be diminished in extent, the pillars more widely spaced, and the front row converted into a wall in which the entrances would be usually placed. In this instance the one entrance, for some local reason, is lateral. The whole floor of the church is covered with a mosaic so purely classical in style of execution as to leave no doubt as to its early date.
A more common form is shown in the annexed woodcut, representing a small church at Announa, likewise in Algeria, about 45 ft. square, divided into three aisles, and with a projecting apse. If we turn to the plan of the Temple of Mars Ultor (Woodcut No. 186), we see at once whence this form was derived. It only requires the lateral columns to be brought slightly forward to effect the requisite change. When the building was to be used by a congregation, and not merely for display, the pillars would require to be more widely spaced.
A third form, from Ibrim in Nubia, shows the peculiarity of the apse being internal, which became very fashionable in the Eastern, though not so much so in the Western, churches, but still sufficiently so to make its introduction at this early age worthy of notice. The building
269. Plan of Church at Announa. Scale 50 ft. to 1 in.
