We now proceed to indicate the method by which these changes were effected, apart from any displacement of race. Our explanation finds a parallel in the process which has changed the face of the Scottish Highlands within the last hundred and fifty years, and which produced very important results within the "sixty years" to which Sir Walter Scott referred in the second title of _Waverley_.[8] There has been no racial displacement; but the English language and English civilization have gradually been superseding the ancient tongue and the ancient customs of the Scottish Highlands. The difference between Skye and Fife is that the influences which have been at work in the former for a century and a half have been in operation in the latter for more than eight hundred years. What then were the influences which, between 1066 and 1300, produced in the Scottish Lowlands some of the results that, between 1746 and 1800, were achieved in the Scottish Highlands? That they included an infusion of English blood we have no wish to deny. Anglo-Saxons, in considerable numbers, penetrated northwards, and by the end of the thirteenth century the Lowlanders were a much less pure race than, except in the Lothians, they had been in the days of Malcolm Canmore. Our contention is, that we have no evidence for the assertion that this Saxon admixture amounted to a racial change, and that, ethnically, the men of Fife and of Forfar were still Scots, not English. Such an infusion of English blood as our argument allows will not explain the adoption of the English tongue, or of English habits of life; we must look elsewhere for the full explanation. The English victory was, as we shall try to show, a victory not of blood but of civilization, and three main causes helped to bring it about. The marriage of Malcolm Canmore introduced two new influences into Scotland--an English Court and an English Church, and contemporaneously with the changes consequent upon these new institutions came the spread of English commerce, carrying with it the English tongue along the coast, and bringing an infusion of English blood into the towns.[9] In the reign of David I, the son of Malcolm Canmore and St. Margaret, these purely Saxon influences were succeeded by the Anglo-Norman tendencies of the king's favourites. Grants of land[10] to English and Norman courtiers account for the occurrence of English and Norman family and place-names. The men who lived in immediate dependence upon a lord, giving him their services and receiving his protection, owing him their homage and living under his sole jurisdiction, took the name of the lord whose men they were.