It would be well if we might believe that the story of his betrothal to Highland Mary was, as Lockhart seems to have thought, previous to and independent of the incidents just mentioned. But the more recent investigations of Mr. Scott Douglas and Dr. Chambers have made it too painfully clear that it was almost at the very time when he was half distracted by Jean Armour's desertion of him, and while he was writing his broken-hearted _Lament_ over her conduct, that there occurred, as an interlude, the episode of Mary Campbell. This simple and sincere-hearted girl from Argyllshire was, Lockhart says, the object of by far the deepest passion Burns ever knew. And Lockhart gives at length the oft-told tale how, on the second Sunday of May, 1786, they met in a sequestered spot by the banks of the River Ayr, to spend one day of parting love; how they stood, one on either side of a small brook, laved their hands in the stream, and, holding a Bible between them, vowed eternal fidelity to each other. They then parted, never again to meet. In October of the same year Mary came from Argyllshire, as far as Greenock, in the hope of meeting Burns, but she was (p. 028) there seized with a malignant fever which soon laid her in an early grave. The Bible, in two volumes, which Burns gave her on that parting day, has been recently recovered. On the first volume is inscribed, in Burns's hand, "And ye shall not swear by My Name falsely, I am the Lord. Levit. 19th chap. 12th verse;" and on the second volume, "Thou shalt not forswear thyself, but shalt perform unto the Lord thine oath. Matth. 5th chap. 33rd verse." But the names of Mary Campbell and Robert Burns, which were originally inscribed on the volumes, have been almost obliterated. It has been suggested by Mr. Scott Douglas, the most recent editor who has investigated anew the whole incident, that, "in the whirl of excitement which soon followed that Sunday, Burns forgot his vow to poor Mary, and that she, heart-sore at his neglect, deleted the names from this touching memorial of their secret betrothal." Certain it is that in the very next month, June, 1786, we find Burns, in writing to one of his friends about "poor, ill-advised, ungrateful Armour," declaring that, "to confess a truth between you and me, I do still love her to distraction after all, though I won't tell her so if I were to see her." And Chambers even suggests that there was still a third love interwoven, at this very time, in the complicated web of Burns's fickle affections. Burns, though he wrote several poems about Highland Mary, which afterwards appeared, never mentioned her name to any of his family. Even, if there was no more in the story than what has been here given, no wonder that a heart like Burns, which, for all its unsteadfastness, never lost its sensibility, nor even a sense of conscience, should have been visited by the remorse which forms the burden of the lyric to Mary in heaven, written three years after. (p. 029)