From the arched form of the stone it seems most likely to have been a chancel arch, a feature which would scarcely be expected in Scotland in the eighth century. The primitive church may, however, have been rebuilt, possibly in the tenth century, when a church with a chancel would more probably be erected, having the stone in question for its chancel arch. The small upright animal in the centre of the arch, having a cross in front of it, seems to represent the Paschal lamb; while the other nondescript animal at the feet of the king may be an early example of the practice usual in mediæval monuments of resting the feet of the effigy on an animal.[267] On the Ruthwell Cross the figure of the Saviour appears standing on the heads of two animals. [Illustration: Sculptured Stone from Ruins of Ancient Church at Forteviot, Perthshire.] APPENDIX. The following is a statement by Mr. W. Galloway in defence of his views regarding the date of the walls of St. Blane’s Church, Bute:[268]-- “Objections are taken in the notice of St. Blane’s Chapel, Bute (Vol. I. p. 297), to the views advanced by me in the _Archæologia Scotica_ (Vol. V. p. 217) as to the priority in date and construction of the rubble part of the chancel, over the Romanesque structure conjoined with it. These are specially summarised under three heads, in the first of which exception is taken to the fact of there being a base, topped with a small splayed freestone course, with rubble above and below, which is supposed to contravene the ideas ordinarily entertained as to Celtic practice. This practice, however, was strictly dependent upon and fixed by the nature of the building materials that happened to be available in any particular locality. In out of the way districts and far-off islands, where freestone was unknown or not procurable, the builder had to be content with the stone that came most readily to hand, necessity, not choice, compelling his selection. This is proven by the avidity with which the Celt took to freestone whenever it could be got. “No better illustration can be selected than Oransay Priory (Vol. III. pp. 372-381). There the south cloister arcade, the door to the church adjoining it, with the chapel projecting at the north-east angle (and to these may be added the _Teampul na ghlinne_, on the Colonsay side of the strand), are examples of rubble building, in the local schist, where arches are turned and openings formed without a trace of freestone or any material that could be hewn. The portion of a mullion of transitional date found in the ruins proves that freestone had been imported to the island by the close of the twelfth century, and was in constant use thereafter.