destroyed culture of St. Columba, 130;
enslaved aborigines in their colonies, 130;
their place-names in Scotland, 131;
settled on coasts and lower valleys, 14, 131;
subdued by Scots in north, 131;
Gaelic language adopted by, 131;
few monuments in Scotland, 132;
domestic and ecclesiastical buildings of wood or stone, 132, 133, 134;
York Powell on, 134;
discovery of America, and Africa, 136.