It has been objected to the map theory that in the parts of Scotland and England where circle-and-channel scorings occur most numerously, no raths or forts, or, if any, very few, are to be found. But it may be urged that the early British strongholds, corresponding to our raths, duns, and stone forts, were very frequently composed of perishable materials, such as timber stockades, or the interwoven branches of trees, of which, in the course of a few centuries at most, no trace would remain. [Illustration: Rock Scribings, Mevagh, Co. Donegal. (Scale, one-fourth.)] [Illustration: Scribings on sides of Knockmore Cave, near Derrygonnelly, Co. Fermanagh. (Scale, one-third.)] Only a small portion of the rubbings and drawings made of the rock scribings by Bishop Graves was published by him. Mr. Robert Day has published some interesting examples taken from a scored rock of red sandstone on the road between Bantry and Ballydehob. The scribings consist of circles, cup-shaped cavities, penannular rings, and V-shaped markings.[12] The late George Du Noyer describes at length some which he found in various parts of the country[13]; and other antiquarians have largely added to the list. Amongst these is Mr. G. H. Kinahan, whose descriptions and illustrations of the scribings on rocks in Wicklow and Wexford, and in the Mevagh and Barnes districts (Co. Donegal), deserve attention.[14] A stone now in the Grainger collection of the Museum, Belfast, and which once stood on a hill near Broughshane, Co. Antrim, furnishes an instance of elaborate scoring within a roughly shield-shaped outline. The stone is stated to have been originally found covering a cist. A similar example of scorings was found in a sepulchral chamber at Cloverhill, near Sligo.[15] Mr. Wakeman discovered, near Boho, Co. Fermanagh, about nine miles from Enniskillen, a cluster of large rocks bearing a number of the cup-and-circle devices.[16] In the same neighbourhood were similar markings on the living rock. They occur a little to the south of Lough Blocknet, on the slope of the hill. [Illustration: ‘Shield pattern’ Rock-sculpture, from Broughshane, Co. Antrim.]