The map is a large one; it is a chart of the world.

He knows the capes and the bays; he has sailed round them, and knows their relative distance, and at last becomes aware of the magnitude of the whole.

Object after object becomes more familiar.

He can estimate the population; he compares the amount of it with that of countries that he is acquainted with, and finds that this one town contains within it nearly as great a number of souls as all British North America.

He estimates the incomes of the inhabitants, and finds figures almost inadequate to express the amount.