One piece of evidence rather points in this direction. The Australian stone churinga are shaped like the wooden churinga, and these are shaped like the _tundun_, or 'bull-roarer.' Now the bull-roarer (which occurs in Australia where stone churinga do not) is a sacred oval piece of wood, not to be seen by women, which is whirled at the mysteries, and makes a windy, roaring noise. The same object is used, for the same purpose, at the mysteries in America, Africa, and, of old, in Greece.[16] The roaring noise is taken to be the voice of Tundun, son of Mungan-ngaur, 'Our Father' in the heavens, among the Kurnai, and of gods or culture heroes of other names in other tribes. Now, in Celtic Scotland (as also in England) this instrument, the tundun, occurs as a mere toy, in Gaelic named _strannam._ Does it descend from a sacred object of savage mysteries, and are the Australian stone churinga--in shape like the tundun, and like the tundun tabooed to women--mere lapidary modifications of the wooden tundun? However this may be, the _strannam_ looks like a link in the long chain which binds us to the prehistoric past. While correcting the proof-sheets of this article I read, in the _Glasgow Herald_ (January 7, 1899), an article on Dumbuck and Dunbuie, by Dr. Munro, the eminent authority on crannogs, or pile-dwellings, and, generally on prehistoric Scotland. Dr. Munro, as I understand him, does not regard Dumbuck as an older than mediæval site, nor as a true crannog. The incised stones he looks on either as of most singular character (if genuine) or as forgeries of to-day, the opinion which he seems to prefer. He was then unacquainted with similar objects in any part of the world. I have here provided references to similar objects from Central Australia, and I suggest examination of the _apparently_ similar Irish objects, figured in 'Proceedings of Scottish Society of Antiquaries,' 1893, p. 299, figs. 6 and 7. Not having seen these stones I can only offer the hint suggested by the illustrations in 'Proceedings.' Why a forger should forge such unknown objects, and place them at Dunbuie, in 1895, before the Central Australian stones had been described, I cannot guess. Nor can I enough deplore the stupidity of the same hypothetical forger in not 'salting' Dunbuie and Dumbuck with neolithic implements, whether antique or made by some Flint Jack of to-day. Both his sins of omission and of commission _donnent furieusement à penser_. Dr. Munro, however, as I gather from his article on Dumbuck in 'The Reliquary' (April 1901), still declines to recognise the Dumbuck decorated portable stones as of genuine antiquity. [1] For India see _Archaic-logical Notes on Ancient Sculpturings on Rocks in Kumaon, India_, by Mr. J. H. Bivett-Carnac, Calcutta, 1883. The form of the Jew's harp is common to India and Scotland. [2] _Proceedings S.A.S_., June 1875. 'Ohio Rock Markings.' [3] _Ancient Sculpturings of Cups, Circles, &c_. Edinburgh, 1871.