Nevertheless, the oak is not English, but probably Norwegian, which seems to be richer in the grain than our own native tree. It is clear that the wood must have been carefully cut in such a way as to show as much "figure" as possible--the cuttings being, with this distinct object, as nearly as possible radiating from the centre of the trunk of the tree--the "medullary rays" of the wood being, in fact, sliced through, instead of intersected transversely. This has the effect of displaying the largest amount of the grain. Window Sashes of the Staircase. The visitor should notice the difference in the sashes of the two windows on the left-hand side of the stairs as you go up, as compared with the other two on the landing at the top. The first two windows have had large panes of glass--2 feet 1 inch high by 1 foot 2-1/2 inches wide--and thin bars, substituted for the original smaller panes--12-1/2 inches high by 9-1/2 inches wide--and the thick moulded bars, which still remain in the landing windows. This side by side comparison enables us to estimate how deplorable and stupid was the want of taste, which led to the destruction here, as elsewhere in this Palace, of the picturesque, well-proportioned spacings of the window panes, to insert instead ill-proportioned panes and thin bars. Not until the time of George II. did this foolish, inartistic fancy come into vogue. Wren, of course, knew what he was about when he selected the sizes of the spaces and bars. He determined them on definite principles of scale and proportion, according to the sashes they were intended to fill, and according, also, to the dimensions of the room, and the plan and shape of the surrounding wainscot. He had, in fact, eight or ten different types of sashes--the mouldings, as well as the widths and sizes of the bars varying, and the shapes of the panes--square or upright--varying also; not like your ingenious modern builder, who runs out "mouldings" at so much a foot, mitres them up into equal spaces, and, regardless of scale and proportion, sticks in the same sized sashes, panes, and bars everywhere, in large lofty rooms or small low ones--all alike. The dimensions of this staircase are 24 feet 3 inches long by 22 feet 10 inches wide, and 25 feet high. =Queen Mary's Gallery.= Queen Mary and Queen Anne are the sovereigns with whom this gallery is mainly associated; and indeed, it is now--since the restorations of the last twelve months, which have mainly consisted in repairing the panelling, and removing the paint with which it was all smeared over in the reign of George I.--to be seen for the first time for a hundred and seventy-four years, exactly as it appeared in their time. It remains, indeed, more intact than any other room in the Palace; and with its beautiful deep-toned oak panelling, its richly-carved cornice, its low-coved ceiling, and its closely-spaced, thick-barred window-sashes, it has a most comfortable, old-fashioned air.