Before leaving the Octagon the visitor would do well to contemplate this portion of the building, as affording an extraordinary example of the skill and judgment of the man who designed and carried into effect so grand and unique a specimen of architecture, covering, as it does, a large area without supporting columns; no heavy mass of stone-work meets the eye, but the pillars, though strong and of great height are so constructed as to give an appearance of lightness and elegance; the vaulting is rich though simple, and the lantern above deserves notice from its singular position, apparently without support, but starting as it were from the ends of the ribs of the groining: taken as a whole it may be fairly considered as without parallel in this country. The architectural views from the Octagon in every direction are exceedingly fine, and will repay the visitor for a pause of a few minutes to notice them; on all sides are examples of great beauty and variety. There are many other points in the Cathedral which afford attractive scenes as shewn in the effects of light and shade, the intersections of arches, perspective, &c., which may be found by the visitor in his survey, if watched for, but we cannot undertake to point them out. * * * * * The next portion of the building to which our attention is attracted is +The Choir,+ which, previous to 1322 was under the central Tower, and extended, including the rood-loft, from the second column at the eastern end of the Nave, as it now is, (it then extended one bay further eastward,) to about the same distance, or rather more, on the opposite side; and after the erection of the Octagon was again placed there; in 1770 it was removed to the six eastern arches of the Cathedral, the space under the Octagon and the two bays eastward of it being used as a sermon-place.[38] It was again removed in 1852, and now commences at the eastern side of the Octagon, extending to the length of seven bays, (the stalled portion occupying three of them,) leaving the two eastern bays as a retro-choir. [Footnote 38: Previous to the last removal, the custom was that only one sermon was preached in the morning to the congregations severally from the Choir, St. Mary's Church, and Holy Trinity Church, who assembled together, and occupied generally seats provided by themselves, in the Octagon and the two bays east of it, the third being taken up by the screen dividing it from the Choir with the organ loft over. The sermons were usually preached by the Canon in residence at the time.] This will be better understood by reference to the accompanying plans, (for the use of which we are indebted to the kindness of the Editor of the "Architectural Quarterly Review,") one shewing the position of the Choir previous to the year 1770, and the other the arrangement made at the last alteration. [Illustration: GENERAL PLAN: