The policy or advantage of [immigration] taking place in a...

The policy or advantage of [immigration] taking place in a body (I mean the settling of them in a body) may be much questioned; for, by so doing, they retain the language, habits, and principles (good or bad) which they bring with them. Whereas by an intermixture with our people, they, or their descendants, get assimilated to our customs, measures, and laws: in a word, soon become one people.