Sir Henry Dryden recognises the following styles in the building:—1st style, 1137 to 1160; 2d style, 1160 to 1200; 3d style, 1200 to 1250; 4th style, 1250 to 1350; 5th style, 1450 to 1500. (Guide to St. Magnus’ Cathedral by Sir H. Dryden, Daventry, 1871.) Footnote 178: Magnus Helga Saga (edidit Jonæus: Hafniæ, 1780), pp. 536, 538. Footnote 179: The present church of St. Olaf’s, which is not older than the 16th century, and is said by Wallace to have been built by Bishop Reid, in all probability stands on the site of the older one. The veneration of St. Olaf extended both to Scotland and England. There was a church dedicated to him at Cruden, and among the articles enumerated in an inventory of the treasury of the cathedral of Aberdeen in 1518, there is “a small image of St. Olaf of silver decorated with precious stones.”—(Regist. Episc. Aberdonense, ii. p. 172.) Footnote 180: Neale, in his Ecclesiological Notes (p. 116), states that Earl Rögnvald’s remains were first interred in the church of Burwick, South Ronaldsay, but gives no authority for the statement. The Saga, on the other hand, states expressly that his remains were taken to Kirkwall, and interred in the cathedral. It is not likely that the founder of the cathedral would have been interred anywhere else. Footnote 181: See p. liii, _antea_. Footnote 182: In the engraving given of this church by Hibbert, the church and tower are both represented as covered by a stone roof, that of the tower being a conical cap resembling the usual termination of the Irish Round Towers. Footnote 183: In Jo. Ben’s description of the islands (1529) it is said that the church of Egilsey was dedicated to St. Magnus. But as he adds that St. Magnus was born in Egilsey, and brought up there from his infancy, and that he gave a piece of ground to his nurse, on which she made an underground house with all its furniture of stone, it is plain that he is merely repeating the absurd traditions of the time. Footnote 184: There were three towered churches in Shetland (see p. ci.) Footnote 185: “Its style of architecture,” says Sir Henry Dryden, “discarding certain indications of an earlier date, prevents our assigning to it a date later than the beginning of the 12th century. When we contrast it with the Kirkwall Cathedral begun in 1137, we are forced to give an earlier date than that to Egilsey, and this opinion is corroborated by the churches at Orphir and Brough of Birsay.”—(Ruined Churches in Orkney and Shetland, in the _Orcadian_ of 1867.) Footnote 186: