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AN ESSAY ON THE

more left them than went to them. In the year 1760, they were increased to half a million. They had therefore all along doubled their own number in twenty-five years. In New Jersey the period of doubling appeared to be twenty-two years; and in Rhode island still less. In the back settlements, where the inhabitants applied themselves solely to. agriculture, and luxury was not known, they were found to double their own number in fifteen years, a most extraordinary instance of increase[1]. Along the sea coast, whichwould

  1. In instances of this kind the powers of the earth appear to be fully equal to answer it the demands for food that can be made upon it by man. But we should be led into an error if we were thence to suppose that population and food ever really increase in the same ratio. The one is still a geometrical and the other an arithmetical ratio, that is, one increases by multiplication, and the other by addition. Where there are few people, and a great quantity of fertile