From St. Andrews, we drove over Magus Muir. My father had announced we were "to post," and the phrase called up in my hopeful mind visions of top-boots and the pictures in Rowlandson's DANCE OF DEATH; but it was only a jingling cab that came to the inn door, such as I had driven in a thousand times at the low price of one shilling on the streets of Edinburgh. Beyond this disappointment, I remember nothing of that drive. It is a road I have often travelled, and of not one of these journeys do I remember any single trait. The fact has not been suffered to encroach on the truth of the imagination. I still see Magus Muir two hundred years ago; a desert place, quite uninclosed; in the midst, the primate's carriage fleeing at the gallop; the assassins loose-reined in pursuit, Burley Balfour, pistol in hand, among the first. No scene of history has ever written itself so deeply on my mind; not because Balfour, that questionable zealot, was an ancestral cousin of my own; not because of the pleadings of the victim and his daughter; not even because of the live bum-bee that flew out of Sharpe's 'bacco-box, thus clearly indicating his complicity with Satan; nor merely because, as it was after all a crime of a fine religious flavour, it figured in Sunday books and afforded a grateful relief from MINISTERING CHILDREN or the MEMOIRS OF MRS. KATHATINE WINSLOWE. The figure that always fixed my attention is that of Hackston of Rathillet, sitting in the saddle with his cloak about his mouth, and through all that long, bungling, vociferous hurly-burly, revolving privately a case of conscience. He would take no hand in the deed, because he had a private spite against the victim, and "that action" must be sullied with no suggestion of a worldly motive; on the other hand, "that action," in itself, was highly justified, he had cast in his lot with "the actors," and he must stay there, inactive but publicly sharing the responsibility. "You are a gentleman - you will protect me!" cried the wounded old man, crawling towards him. "I will never lay a hand on you," said Hackston, and put his cloak about his mouth. It is an old temptation with me, to pluck away that cloak and see the face - to open that bosom and to read the heart. With incomplete romances about Hackston, the drawers of my youth were lumbered. I read him up in every printed book that I could lay my hands on. I even dug among the Wodrow manuscripts, sitting shame-faced in the very room where my hero had been tortured two centuries before, and keenly conscious of my youth in the midst of other and (as I fondly thought) more gifted students. All was vain: that he had passed a riotous nonage, that he was a zealot, that he twice displayed (compared with his grotesque companions) some tincture of soldierly resolution and even of military common sense, and that he figured memorably in the scene on Magus Muir, so much and no more could I make out. But whenever I cast my eyes backward, it is to see him like a landmark on the plains of history, sitting with his cloak about his mouth, inscrutable. How small a thing creates an immortality! I do not think he can have been a man entirely commonplace; but had he not thrown his cloak about his mouth, or had the witnesses forgot to chronicle the action, he would not thus have haunted the imagination of my boyhood, and to-day he would scarce delay me for a paragraph. An incident, at once romantic and dramatic, which at once awakes the judgment and makes a picture for the eye, how little do we realise its perdurable power! Perhaps no one does so but the author, just as none but he appreciates the influence of jingling words; so that he looks on upon life, with something of a covert smile, seeing people led by what they fancy to be thoughts and what are really the accustomed artifices of his own trade, or roused by what they take to be principles and are really picturesque effects. In a pleasant book about a school- class club, Colonel Fergusson has recently told a little anecdote. A "Philosophical Society" was formed by some Academy boys - among them, Colonel Fergusson himself, Fleeming Jenkin, and Andrew Wilson, the Christian Buddhist and author of THE ABODE OF SNOW. Before these learned pundits, one member laid the following ingenious problem: "What would be the result of putting a pound of potassium in a pot of porter?" "I should think there would be a number of interesting bi-products," said a smatterer at my elbow; but for me the tale itself has a bi-product, and stands as a type of much that is most human. For this inquirer who conceived himself to burn with a zeal entirely chemical, was really immersed in a design of a quite different nature; unconsciously to his own recently breeched intelligence, he was engaged in literature. Putting, pound, potassium, pot, porter; initial p, mediant t - that was his idea, poor little boy! So with politics and that which excites men in the present, so with history and that which rouses them in the past: there lie at the root of what appears, most serious unsuspected elements.