It was long the fashion with antiquaries to receive as an established and altogether incontrovertible position the Druidical origin of all symmetrical groups of standing stones in the British Isles. The more careful researches of later writers into the early history of the Orkney and Shetland Isles, and of their intimate connexion with Scandinavia prior to the Christian era, have led to a revision of this opinion, and to an almost universal abandonment of a Druidical for a Scandinavian origin of the great Temple of Stennis, and the numerous other corresponding structures in the north of Scotland and the Western Isles. Barry, Hibbert, Scott, and Macculloch have each assailed the old Druidical fancies with considerable learning and ability. "Dr. Macculloch," says Dr. Hibbert, "has wielded the hammer of Thor with very signal success in aid of the demolition of the Druidic theory." But notwithstanding so powerful an array of authorities in support of this newer line of argument, I venture to think, that when the exclusive Scandinavian theory shall have been demolished with equally signal success, we shall be nearer the truth than has been yet attained. The common Gaelic phrase--_Am bheil thu dol do'n chlachan_,--Are you going to the stones? by which the Scottish Highlander still inquires at a neighbour if he is bound for church, seems in itself no doubtful tradition of ancient worship within the monolithic ring. Yet it has already been shewn that some of these were not temples but sepulchral monuments; nor is their uniformity sufficiently marked to prove a common origin for all. Sir Walter Scott remarks, in his Abstract of the Eyrbiggia Saga:[136]--"The Temple of Thor is described as a circular range of upright stones, within which one more eminent marked the Stone of Thor, where human victims were immolated to the Thunderer, by breaking or crushing the spine. And this description may confute those antiquaries who are disposed to refer such circles exclusively to the Celtic tribes, and their priests, the Druids." Dr. Hibbert has quoted this paragraph as a refutation of those who would contend that the Temples of Orkney had been used by Celtic tribes, before they were occupied and dedicated anew by later Scandinavian worshippers. But it unfortunately happens in this, as in too many other instances, that the "Abstract" furnishes a very partial rendering of the original saga; where the Temple of Thor is described as a vast inclosed edifice, with chambers constructed of wood, and a chancel or sacrarium specially dedicated to the Deity, of which the stone circle formed only one of its complicated features.[137] Doubtless in some at least of the monolithic groups still standing, we see but the skeleton of structures which have outlived many no less indispensable features of the original plan, formed of more perishable materials. Modern agricultural operations have occasionally brought to light very obvious evidences of this. An intelligent observer