Owen was himself canonized, and this cross became an object of veneration at Haddenham, where pilgrims from Cambridge crossed the Ouse. During the eighteenth century its mutilated base was brought into the cathedral from Haddenham, where it had long served as a horsing-block. It is now more worthily placed, and we can still read the inscription in Latin which runs as follows (the name of Owen being Latinized almost out of recognition), LUCEM TUAM OVINO DA DEUS ET REQUIEM. AMEN. Grant O God to Owen Thy light and rest. Amen. A little further on, still in the south aisle, we come to the "Monks' Door," with its strange outer carvings of dragons, its one door-post enriched with spiral fluting, a sister doorway to the prior's, but by no means a twin. Almost touching it is the half of an ancient arched doorway now walled up, its door-post spirally and deeply sculptured. In both doorways one door-post is hidden by the masonry of a great buttress built here by Alan of Walsingham to support his central tower. We are here in the last remnant of Ely's cloisters, and let us not fail to observe the recessed archway for books in the southern wall of the nave mentioned above. Before leaving the aisle we should notice that its windows are for the most part late insertions, the original Norman fenestration being replaced by Perpendicular. We now come to the wonder of Ely, of which we have already heard much, its Octagon Tower and Lantern. Other features in the cathedral we may meet with elsewhere, but this central feature was not itself a copy, nor has it served as a pattern--it remains alone, a brilliant make-shift, a great Necessity having proved the mother of a great Invention. We can hardly here enter into the details of this Octagon Tower as an engineering feat, but we can remind our readers how, by enlarging the base of his steeple, by making it rest on eight supporting piers, instead of on four like its fallen predecessor, Alan of Walsingham gave it greatly increased stability. [Illustration: _The Tower from the Cloisters._] Thomas Fuller, whom we have quoted before, thus racily describes the Lantern at Ely, as it was at the close of the Commonwealth, and draws from it the lesson he loved to find underlying outward things. After speaking of the beauty of the minster, he goes on to say, "The lanthorn therein, built by Bishop Hotham, is a masterpiece of architecture. When the bells ring the woodwork thereof shaketh and gapeth (no defect but perfection of structure) and exactly chocketh into the joints again; so that it may pass for the lively emblem of the sincere Christian who, though he has _motum trepidationis_ of fear and trembling, stands firmly fixed on the basis of a true faith."