In Three Parts. Part 1, Showing, Theoretically And Practically, The Nature Of Commerce, With Its Various Kinds And Subdivisions; The Duties Of The Several Persons Engaged In It; And The Nature And Forms Of Bills Of Exchange, Bills Of Lading, Charter Parties, Invoices, Account Sales, Accounts Current, Insurance Accounts, Average Statements, Etc. Part 2, Containing A Practical Treatise On Foreign Exchanges, And Operations In Specie And Bullion, And Teaching How Calculations Thereof Are Performed By The Chain Rule. Part 3, Being An Introduction To Bookkeeping By Single Entry And Double Entry, Both On The Italian And English Systems.