[Illustration: PLATE XXIX. (1) S. ANDREW IN KRISEI. IN THE CLOISTER ON THE SOUTH SIDE OF THE CHURCH, LOOKING EAST. (2) S. ANDREW IN KRISEI. THE CHAIN ON THE WITHERED TREE IN THE COURT ON THE WEST OF THE CHURCH. _To face page 116._] If we stand in the northern lateral apse and face the mihrab the reason for the alterations is evident. The original Christian orientation is ignored, and the apses, in place of being lateral, are terminal. To the left is the old apse left unaltered; to the right, the original filling of the dome arch forms a 'nave-arcade' similar to that of the mosque of Sultan Bayazid; while by means of the additional apses the building has been converted into a miniature imperial mosque of the S. Sophia type, a distinctly clever piece of Turkish alteration. In its original form the central dome was surrounded by an 'ambulatory' of one story formed by the aisles and 'inner narthex.' Such a plan is common to both the domed basilica type and the domed cross type, the difference depending upon the treatment of the cross arms above. In both types, however, the side dome arches are invariably filled in with arcades similar to that filling in the western arch of S. Andrew. We are therefore justified in restoring such arcades here. The type thus restored differs from the domed cross church in that the cross arms do not extend to the outer walls, and from the domed basilica in that the western dome arch is treated in a similar manner to the lateral arches. To this type the term 'ambulatory church' may be applied. Adjoining the west end of the church is the fine cloister of the Teké of dervishes, probably on the lines of the old monastery. All the columns around the court are Byzantine, and one of them bears the inscription: the (column) of, Theophane--[Greek: hê tês Theôphanês] (Fig. 69). In the south wall is built a beautiful Byzantine doorway having jambs and lintel decorated on the face with a broad undercut scroll of flat leaves and four-petalled flowers, running between two rows of egg and dart, while on the intrados are two bands of floral ornaments separated by a bead moulding. One of the bands is clearly a vine scroll. The method employed here, of joining leaves to a centre so as to form spiral rosettes, is found also on some of the small capitals in S. Sophia. Similar rosettes appear in the decoration of the doorway to the Holy Sepulchre on the ivory in the Trivulce collection at Milan.[178] [Illustration: Fig. 36.--THE CHURCH OF S. ANDREW IN KRISEI (RESTORED PLAN).] [Illustration: PLATE XXX. S. ANDREW IN KRISEI. THE DECORATED DOORWAY IN THE CLOISTER. _To face page 118._] [Illustration: FIG. 37.] [Illustration: FIGS. 38 AND 39.] [Illustration: Fig. 40.] [144] Pachym. ii. pp. 35, 123. [145] _Itin. russes_, p. 122. [146] Synax., October 17. [147] Pachym. ii. p. 133.