A new and complete system of book-keeping, by an improved method of double entry : adapted to retail, domestic and foreign trade: exhibiting a variety of transactions which usually occur in business. The whole comprised in three sets of books; the last set, being a copy o the second according to those systems most generally in use, is given in order to exhibit, by a comparative view, the advantages of the system now laid down. To which is added, a table of the duties payable on goods, wares and merchandise, imported into the United States of America. The whole in dollars and cents. By William Mitchell.