[Illustration: Loch Kinnord] A number of hill-forts, more or less disintegrated, are traceable in the higher ground in the vicinity of Lochs Kinnord and Davan. These show concentric lines of circumvallation, with stronger fortifications at various points. Vitrified forts, where the stones have been run together by the application of heat, are found at Dunnideer near Insch, and on the conical summit of Tap o’ Noth near Rhynie. The Barmekin at Dunecht encloses an area of more than two acres, and consists of five concentric walls, three of earth-works and two of stone. Numerous cairns, barrows or tumuli exist all over the county, at Aberdour on the coast, at Birse, Bourtie, Rhynie, Turriff, and elsewhere. Human remains have been found in most of these; and as a rule flint arrow-heads and other implements are also associated with them. 18. Architecture—(_a_) Ecclesiastical. The history of Scotland from an architectural point of view does not reach very far back into the past. Till the tide of civilisation flowed into Scotland from the south in the eleventh and twelfth centuries, there existed in the country no architecture worthy of the name. When the Normans became the ruling power in Britain, they brought architectural ideas with them and these superseded the crude attempts at church building hitherto made. The Scottish churches built under the influence of Columba were simple and rude, consisting of a small oblong chamber with a single door and a single window. The Norman style, which obliterated these structures, dates from the twelfth century and, being carried along the coast of lowland Scotland, gradually changed the manner of building. It is characterised by simple, massive forms and especially by arches of a semi-circular shape, sometimes enriched by zig-zag, and by the use of nook shafts and cushion capitals. Of this period the remains in Scotland are not numerous, and they are very few in Aberdeenshire. The earliest specimen we can point to is the ancient church of Monymusk, which contains some Norman building incorporated in the modern church erected on the old site. Monymusk is on Donside seven miles up the river from Kintore. It is a place of great antiquity. The Culdees first appear there in the twelfth century, and the Earl of Mar built a convent for them on condition that they should submit to canonical rule. The lower part of the church tower and the chancel arch are of the Norman style. The tower has been entirely rebuilt except the lower doorway, which has a round arch-head with a hood mould enclosing it. These small fragments suggest that they were part of the convent erected by the Earl of Mar very early in the thirteenth century.