The tower in general form is a parallelogram, measuring about forty-five feet by thirty; the strongly-grouted walls are surmounted by an overhanging parapet, with a watch-turret projecting from each angle, giving it the character of a fortalice—as, indeed, it was in the troublous times when watch and ward and beacon lights were necessary safeguards against sudden assaults. In an angle of the thick walls is a spiral stone staircase, communicating with the upper chambers and the roof—the latter, in its original state, having been flat and covered with lead. The masonry, though of great strength, is plain and of the simplest character, the only carved work being the small square-headed windows in the upper stories, which have foliated lights, divided by a mullion, and are apparently of later date than the main structure, having probably been inserted about the close of the long reign of Edward III. In one of these windows the arms and crests of the Harringtons and Stanleys were formerly to be seen, but they were some years ago removed for safety, and are now placed in a window of the adjacent farmhouse. One of the small diamond panes has the well-known Stanley crest—an eagle, with wings endorsed, preying upon an infant in its cradle, with the addition of the fret or Harrington knot—_nodo firmo_—at each angle. On another pane are the letters Q (the equivalent of W) H, with the fret above and below—the initials being probably those of Sir William Harrington, who, according to Dr. Whitaker, fell mortally wounded on the plains of Agincourt, on that memorable St. Crispin’s Day in 1415[17]. A third pane has depicted upon it an eagle’s claw, a cognizance of the Stanleys, with a fleur de lis on each side. [Note 17: This is an error on the part of the learned historian, for Sir William Harrington’s death did not occur until 1450.]