The Professor had been no passive spectator of the exciting and momentous events which were taking place in the Church of Scotland in the years which immediately preceded and followed his entrance on the work of the ministry; and in his address as Moderator of the General Assembly, four decades afterwards, he gives a graphic account of the impressions made upon him by his visits to the Supreme Court of the Church during that period of acrimonious controversy and painful separation. He says: "My first view of the General Assembly was gained in 1840, where from the public gallery of the Tron Church, in near proximity to Dr John Ritchie, of the Potterrow (whose thoughts were already running in the same direction as those of his successors are now), I listened to the thrilling eloquence of Chalmers, and the calm, thoughtful utterances of Cook, and witnessed the first of those titanic encounters between Cunningham and Robertson, which the pen of Hugh Miller and the histories of the period have made classical. My next glimpse of the Assembly was in 1843, when, from the students' gallery of St Andrew's Church, beside my friend William Smith, afterwards of North Leith, I witnessed that sad sight which was never to fade from our memories, nor cease to influence the course of our thought and action--the scene when Welsh, Chalmers, Gordon, and many more good and devoted ministers, abandoning in despair the contest of ten years, withdrew from the Church of their fathers, to rear another in which they hoped to enjoy greater freedom and peace. My next view of the Assembly was in 1848, when, along with Dr Tulloch, and two or three other college friends, I took my place for the first time as a member of the House, and when my old preceptor, then Professor of Church History in St Mary's College, filled the chair. The Church at that time was but slowly recovering from the staggering blow she had received in '43, and the great Dr Robertson was shaping out the splendid scheme which was to constitute her mission for the immediate future, and give to her the consciousness and confidence of reviving life. There were plenty of aged men there, whose lives had been honourably worn out in her service; a goodly band of young men, with not a little of the ardour and enthusiasm of youth; not a few of riper years, who, after weary waiting, had at last been promoted to pastoral charges. But that class which is the mainstay of a Church--the men who have attained to experience by years of labour in her service, and are still able to bear the burden and heat of the day--was more scantily represented."