It was the sort of window which was common in Paris about the end of the seventeenth century. It was high, mullioned, with a broad transom across the centre, and above the middle of the transom a tiny coat of arms three caltrops gules upon a field argent let into the diamond-paned glass. Outside there projected a stout iron rod, from which hung a gilded miniature of a bale of wool which swung and squeaked with every puff of wind.