Double fonts evolution of the baptismal rite. Cases are known in various regions of double baptismal fonts, generally of different depths and dimensions. In some cases they represent two successive phases. At S. Pereto in Majorca Baleari, P. de Palol supposes that two cruciform fonts may have been used together. When a small font is joined to a large pool, some have thought in terms of a basin for preliminary ablutions, for the oil of anointing, for baptism of children; the question remains open. In Spain, some composite fonts made up of a main pool and minor additional fonts suggest, according to Th. Ulbert, an evolution which a study of the liturgical texts seems to confirm; there may have been a change from immersion to effusion pouring and then back to immersion, and the age for baptism changed. Composite fonts would have been made for the immersion both of adults and of the newborn and would be late 6th c.. In any case the different dimensions and depths according to times and regions point to a great variety of rites. 6. Secondary installations, annexes, crossings.
The baptistery itself might contain a table for placing oil used for anointing or even an altar, sometimes in a small apse e.g., Grado in N Italy, Casa Herrera in Spain. Sometimes this apsidiole seems intended rather for the episcopal cathedra see above. It quite often happened, esp. in Africa, that a room or an apsed chapel provided with a presbyterial bench or an altar Dermech at Carthage was added to the baptistery. Some think, without proof, that this installation was intended for the preliminary education of the catechumens catechumeneum, or for the anointing of the newly baptized by the bishop consignatorium. Some baptisteries were supplemented by a thermal installation, esp. in Africa, and by rooms with no particular furnishings sometimes benches, thought to be changing rooms or waiting rooms for catechumens Spanish texts call them sheepfolds. The arrangement of the different rooms, connected to each other and to the church, and the arrangement of the doors or of the steps for entering and leaving the pool, allow us in some cases to recognize the route of the processions of catechumens and clergy during the ceremony attempts by E. Dyggve for Salona, N. Duval for Africa, Th. Ulbert for Spain.