In the great work on _The Ecclesiastical Architecture of Ireland_, which I have just quoted--a work, let me add, overflowing with the richest and ripest antiquarian lore, and yet written with all the fascination of a romance--Dr. Petrie, after describing the two houses I speak of, St. Kevin's and St. Columba's, farther states his belief that both of these buildings "served the double purpose of a habitation and an oratory."[70] They were, in this view, the residences, as well as the chapels, of their original inhabitants; and subsequently the house of St. Kevin at Glendalough, of St. Flannan at Killaloe, etc., were publicly used as chapels or churches.[71] In all probability the _capellula_ of the hermit on Inchcolm was, in the same way, at once both the habitation and the oratory of this solitary anchorite, and apparently the only building on the island when Alexander was tossed upon its shores. The sacred character of the humble cell, as the dwelling and oratory of a holy Columbite hermit, and possibly also the interest attached to it as an edifice which had afforded for three days such welcome and grateful shelter to King Alexander and his suite, would in all probability--judging from the numerous analogies which we might trace elsewhere--led to its preservation, and perhaps its repair and restoration, when, a few years afterwards, the monastery rose in its immediate neighbourhood, in pious fulfilment of the royal vow.[72] Indeed, that the holy cell or chapel of the Inchcolm anchorite would, under the circumstances in question, be carefully saved and preserved by King Alexander I., is a step which we would specially expect, from all that we know of the religious character of that prince, and his peculiar love for sacred buildings and the relics of saints. For, according to Fordun, Alexander "vir literatus et pius" "erat in construendis ecclesiis, et reliquis Sanctorum perquirendis, in vestibus sacerdotalibus librisque sacris conficiendis et ordinandis, studiosissimus." For the antiquity of the Inchcolm cell there yet remains an additional argument, and perhaps the strongest of all. I have already stated that, in its whole architectural type and features, the cell or oratory is manifestly older, and more rude and primitive, than any of the diverse monastic buildings erected on the island from the twelfth century downwards. But more, the Inchcolm cell or oratory corresponds in all its leading architectural features and specialities with the cells, oratories, or small chapels, raised from the sixth and eighth, down to the tenth and twelfth centuries, in different parts of Ireland, and in some districts in Scotland, by the early Irish ecclesiastics, and their Irish or Scoto-Irish disciples and followers, of these distant times and dates.