Outside the wall of the prison M. Foulley had to rely probably on the description of others, as from within the wall the prisoners could only gaze at its dismal brick surface. Of what was beyond he could have no personal knowledge during the long years of his captivity, unless he was fortunate enough on occasions to be a delegate to the market without the Eastern Gate. Hence probably it arises that the buildings representing the quarters of the military guarding the prison are huddled together, in confused order, which bears no relation to that which was their actual position. Although the model is not, as a whole, made accurately to scale, the reader will appreciate its size from the fact that the caserns are modelled on a scale of about 1 to 171—the actual length of each casern was 100 feet, the length in the model is nearly 7 inches. A key plan of the model and M. Foulley’s description are given with the photograph in chapter xii., p. 251. To avoid confusion in following the description, the reader must bear in mind that the Washingley Pictorial Plan, Major Kelly’s plans, and Lieut. Macgregor’s plan are all east elevations—that is, the observer is supposed to face the west, with the Peterborough Road to his left hand—whereas in the plan copied by Mr. Hill the figures and their references are all placed to be read as the observer looks east, with the Peterborough Road on his right hand; therefore the left-hand bottom corner (where the military hospital was situated) in Mr. Hill’s Plan is the right-hand upper corner in the three other plans. The site was a right-angled oblong, with a small space sliced off at the north-west angle. It measured in its long diameter from east to west 500 yards (1,500 feet)—that is, 60 yards more than a quarter of a mile—while across from north to south it was 412 yards (1,236 feet), or 28 yards short of a quarter of a mile. The space enclosed was 42 acres, 7 poles, which is about six times the area of Lincoln’s Inn Fields, London, and about four times that of Trafalgar Square. To the south it was bounded in its whole length by the Peterborough Road, on its other three sides it was surrounded with fields. A strip of land (B B in Mr. Hill’s plan), crossed by a wide roadway leading to the West Barracks, and varying in depth from 125 yards at the Norman Cross corner to 40 yards at the north-west corner, intervened between the western boundary of the site and the North Road. The prison itself occupied 22 acres in the centre of the space. It was enclosed by an octagonal brick wall. Originally the structure was a strong stockade fence, but about the year 1805 the fence was replaced by the brick wall, of which 30 yards are still standing.