The accompanying chart, drawn from a coloured design sent to the English Government in February, 1567, ought to be _reversed_, as in a mirror. So regarded, we are facing Kirk o’ Field, and are looking from south to north. At our left hand, or westward, is the gate or port in the town wall, called ‘the Kirk o’ Field Port.’ If we pass through it, if the chart be right we are in Potter Row. Just from the Port of Kirk o’ Field, the town wall runs due north, for a few yards: then runs due east, enclosing the church yard of Kirk o’ Field, on the north, and the church itself, shown in ruins, the church, as usual, running from east to west. After running west to east for some fifty yards, the town wall, battlemented and loopholed, turns at a right angle, and runs due south to north, being thus continued till it reaches the northern limit of the plan. Now this wall, here running due south to north, is not the ‘wall of the town decayed and fallen down on the south side of the Provost of Kirk o’ Field’s lodgings,’ as described in the Burgh Records of May 7, 1567. This wall, on the other hand, leaves the collegiate quadrangle of Kirk o’ Field inside it, on the _east_, and the ruined gable of Darnley’s house, a gable running from east to west, abuts on this wall, having a door through the wall into the Thieves’ Row. It is true that one of Darnley’s servants, Nelson, who escaped from the explosion, declared that the gallery of Darnley’s house, and the gable which had a window ‘through the town wall,’ ran _south_. But, by the contemporary chart, the only part of Darnley’s house which was in contact with the town wall ran east to west, and impinged on the town wall, which here ran south to north. Again, in the map of 1647, the wall of that date no longer runs south to north, but is continued ‘lineally’ from that short part of the town wall, in the chart of 1567, which _did_ run west to east, forming there the northern wall of the church yard of Kirk o’ Field. This continuation was ordered to be made by the Town Council on May 7, 1567, three months after Darnley’s murder. Further, in 1646, Professor Crawford wrote that the lodgings of the Provost of Kirk o’ Field, in 1567, ‘had a garden on the _south_, betwixt it and the _present_ town wall.’[126] Now the ruins of Darnley’s house, in the map of 1647, have a space of garden between them and ‘the _present_ town wall,’ the wall of 1647. But, in 1567, the gable of Darnley’s house actually impinged on, and had a window and a door through the town wall on, the _west_ according to the chart.