Agriculture and population the truest proofs of the welfare of the people; or, An essay on public happiness : Investigating the state of human nature through the several periods of history. From the earliest date to the present times. From the French of the Marquis de Chastelux, major-general in the French Army, serying under the count de Rochambeau, in America; and member of the National Assembly. A work recommended by the late Doctor Franklin. - Chastellux, François Jean (Printed for J. Caddel, in the Strand, 1792)