The transepts of Thomas's church appear to have been without aisles. The remains in the crypt show that there were two eastern apses to these transepts close to the central tower, and Professor Willis deduces from the position of these apses that they left no room for eastern aisles. There is no instance in existence of a transept having western without eastern aisles. One may therefore conclude that aisles were entirely wanting. Professor Willis thinks it possible that an additional pair of apses may have existed on the east side of these transepts, to the north and south respectively of these already discovered. This was certainly the case in St. Mary's Abbey. As has been mentioned, considerable doubts still exist as to the size and character of the choir of Thomas's church. On the one hand we have positive testimony that Thomas rebuilt the whole church; on the other, the walls of the crypt, as they existed up to the time of Roger's choir, are a part of the Saxon church. Their masonry is Saxon, and they mark the lines of a chancel far too narrow to have been that of Thomas, even if we suppose that his choir was necessarily small, from the want of funds at his command, and the wasted condition of the diocese. This would seem to support the theory that Thomas left the Saxon choir as it was, and contented himself with rebuilding the ruined nave and transepts. In that case, of course, the Saxon choir remained until the time of Roger. The alternate theory is that Thomas rebuilt an enlarged, but still a small, choir, leaving the Saxon crypt as it remains to this day; and that even this choir proved too small for the magnificent ideas of Roger, who utterly demolished it to make room for his own great building, leaving no trace of it above ground. This is the more probable supposition, and it is supported by the fact that the inner wall of the crypt is composed of fragments of masonry, buildings, etc., of early Norman date, which might well be parts of Thomas's choir, if it was destroyed, as we suppose. Some of the stones are covered with white plaster, showing they are parts of the interior of a building, and they are of the same red sandstone as the remains of the transept apse, which was undoubtedly built by Thomas.