But many asked, in the correspondence just mentioned, Why did they break through the wall? Why did they not go through the window? Simply because there was at that time no glazed window on the western front of the hall. A great window was at the “upper end,” probably that toward Westminster. There was, also, it is probable, a central window looking into the palace court on the eastern side. But toward “the street of Whitehall” there were no open windows, all being built up—as, indeed, the lowest tier remained until a couple of years ago. It is unlikely, though some have asserted it, that the upper tier had been opened and glazed at this time. In any case, these upper windows, if they existed, which is unlikely, would have been of no use to the contrivers of the King’s death. They were too high up and inaccessible except through a narrow balcony within the hall, where one man might have successfully resisted hundreds. The window “at the upper end” may have given light enough, as the hall was not built for use in daylight. It remained in this twilight condition until George I. opened it as a chapel about 1724. Then windows on the first floor became necessary. At first, as on the eastern side, only the centre window was opened. As late as 1761, the third and fifth were still built up. It was probably not until 1830, when the hall was “thoroughly restored” by Sir John Soane, that all the windows on the western side were opened, except those on the ground floor. The ground floor windows were opened first for the United Service Institution. It was asserted in the daily papers that they were re-opened, but, as a fact, they never were opened before. If we schedule these notes we may safely conclude that the lowest tier of windows was only glazed in our own day; that those of the middle—the Ionic storey—were still unglazed in 1649; and that in Silvestre’s view, taken about fifty years after the great tragedy, there was not a single glazed window on this, the western, front. All the apparent openings were filled with masonry.