It is not easy for those who know modern Edinburgh to make a mental picture of the Kirk o’ Field. To the site of that unhappy dwelling the Professors now daily march, walking up beneath the frowning Castle, from modern miles of stone and mortar which were green fields in Mary’s day. The students congregate from every side, the omnibuses and cabs roll by through smoky, crowded, and rather uninteresting streets of shops: the solid murky buildings of the University look down on a thronged and busy populace which at every step treads on history, as Cicero says men do at Athens. On every side are houses neither new enough to seem clean, nor old enough to be interesting: there is not within view a patch of grass, a garden, or a green tree. The University buildings cover the site of Kirk o’ Field, but the ghosts of those who perished there would be sadly at a loss could they return to the scene. In Mary’s time whoever stood on the grassy crest of the Calton Hill, gazing on Edinburgh, beheld, as he still does, Holyrood at his feet, and, crowning the highest point of the central part of the town, the tall square tower of the church of St. Mary in the Fields, on the limit of the landscape. In going, as Mary often went, from Holyrood to Kirk o’ Field, you walked straight out of the palace, and up the Canongate, through streets of Court suburb, with gardens behind the houses. You then reached the gate of the town wall, called the Nether Port, and entered the street of the Nether Bow, which was a continuation of the High Street. By any one of the lanes, or wynds, which cut the Nether Bow at right angles on the left, you reached the Cowgate (the street of palaces, as Alesius, the Reformer, calls it), running from the Castle parallel to the High Street and its continuation, the Nether Bow. From the Cowgate, you struck into one or other of the wynds which led to the grounds of what were, in Mary’s time, the ruined church and houses of the Dominican monastery, or Black Friars, and to Kirk o’ Field.