Sacred Texts has a long essay about Robert Kirk's Secret Commonwealth up:
http://www.sacred-texts.com/neu/celt/sce/sce02.htmWith a different description of what happened to him than the "Walker Between Worlds" site:
He died (if he did die, which is disputed) in 1692, aged about fifty-one; his tomb was inscribed--
ROBERTUS KIRK, A.M.
Lingu? Hiberni? Lumen.
The tomb, in Scott's time, was to be seen in the cast end of the churchyard of Aberfoyle; but the ashes of Mr. Kirk are not there. His successor, the Rev. Dr. Grahame, in his Sketches of Picturesque Scenery, informs us that, as Mr. Kirk was walking on a dun-shi, or fairy-hill, in his neighbourhood, he sunk down in a swoon, which was taken for death. " After the ceremony of a seeming funeral," writes Scott (op. cit., p. 105), "the form of the Rev. Robert Kirk appeared to a relation, and commanded him to go to Grahame of Duchray. 'Say to Duchray, who is my cousin as well as your own, that I am not dead, but a captive in Fairyland; and only one chance remains for my liberation. When the posthumous child, of which my wife has been delivered since my disappearance, shall be brought to baptism, I will appear in the room, when, if Duchray shall throw over my head the knife or dirk which he holds in his hand, I may be restored to society; but if this is neglected, I am lost for ever.'" True to his tryst, Mr. Kirk did appear at the christening and "was visibly seen;" but Duchray was so astonished that he did not throw his dirk over the head of the appearance, and to society Mr. Kirk has not yet been restored. This is extremely to be regretted, as he could now add matter of much importance to his treatise. Neither history nor tradition has more to tell about Mr. Robert Kirk, who seems to have been a man of good family, a student, and, as his book shows, an innocent and learned person.
And I thought this was interesting as well:
Our study of Mr. Kirk's little tractate must have a double aspect. It must be an essay partly on folk-lore, on popular beliefs, their relation to similar beliefs in other parts of the world, and the residuum of fact, preserved by tradition, which they may contain. On the other hand, as mental phenomena are in question--such things as premonitions, hallucinations, abnormal or unusual experiences generally--a criticism of Mr. Kirk must verge on "Psychical Research." The Society organised for that difficult subject certainly takes a vast deal of trouble about all manner of odd reports and strange visions. It "transfers" thoughts of no value, at a great expense of time and of serious hard work. But, as far as the writer has read the Society's Proceedings, it "takes no keep," as Malory says, of these affairs in their historical aspect. Whatever hallucination, or illusion, or imposture, or the "subliminal self" can do today, has always been done among peoples in every degree of civilisation. An historical study of the topic, as contained in trials for witchcraft, in the reports of travellers and missionaries, in the works of the seventeenth-century Platonists, More, Glanvill, Sinclair, and others, and in the rare tracts such as The Devil in Glen Luce and The Just Devil of Woodstock, not to mention Lavater, Wierus, Thyr?us, Reginald Scott, and so on, is as necessary to the psychologist as to the folklorist. 1 If there be an element of fact in modern hypnotic experiments (a matter on which I have really no opinion), it is plain that old magic and witchcraft are not mere illusions, or not commonplace illusions. The subliminal self has his stroke in these affairs. Assuredly the Psychologists should have an historical department. The evidence which they would find is, of course, vitiated in many obvious ways, but the evidence contains much that coincides with that of modern times, and the coincidence can hardly be designed--that is to say, the old Highland seers had no design of abetting modern inquiry. It may be, however, that their methods and ideas have been traditionally handed down to modern "sensitives" and "mediums." At all events, here is an historical chapter, if it be but a chapter in "The History of Human Error." These wide and multifarious topics can only be touched on lightly in this essay; the author will be content if he directs the attention of students with more leisure and a better library of diablerie to the matter. But first we glance at The Secret Commonwealth as folk-lorists.
The Walker Between Worlds site with the original work, in case anybody is looking for it:
http://www.dreampower.com/Kirk_WBW/This is one of my favorite works about the fairy belief, in that it really captures a great deal of the lore and thought of a time long past, and allows us to see that the supernatural realm & people's reaction to it's possibilities were quite different from modern conceptions of what the past was like.