When the Romans garrisoned rather than occupied southern Scotland, and made reconnoitring expeditions into the north, its fastnesses were stoutly defended by fierce Caledonians, woodland savages, and Picti, painted warriors, who may or may not have been the same people. If the same, they may well have split into hostile tribes, warring against each other like the kindred Mohawks and Hurons, sometimes amalgamated by conquest, sometimes uniting to make raids on richer Lowland clearings. After the false dawn of Roman annals ceases to throw a glimmer on those hardy barbarians, darkness again falls over mountain and forest, lit only by the twinkling lamp of adventurous missionaries. Then the twilight of middle-age history shows a Pictish kingdom seated in Charlemagne’s age on the Tay and its tributaries, but there presently overthrown by pushful invaders. These were the Dalriad Scots from Ireland, who began their independent career by getting precarious foothold on the nearest coastland promontory of North Britain. Baffled, as it seems, in an attempt thence to master the country of their origin, then driven, perhaps, from their coast settlements by a stronger swarm of Scandinavian hornets, this stirring race shoved their way across the western Highlands to take a firmer stand in the heart of Scotland, when Kenneth MacAlpine overthrew the Pictish kingdom at Scone, its capital. Buchanan reports two successive battles, the scene of the former a few miles off, at Forteviot, where he makes Kenneth act on the motto of the Celtic Society, _Olim Marte, nunc arte_. His chiefs, we are told, not being very keen for the encounter, while they lay snoring off their drink, the king worked upon them by means of a young cousin of his, disguised as an angel in phosphorescent fish-skins, and equipped with a sort of primitive megaphone, through which he roused the sleepers by a promise of victory, then slipped off his celestial raiment to disappear in the darkness before these heavy-headed warriors were wide awake. It is not often we are taken so well behind the scenes of a miracle.