The scales of commerce and trade : ballancing betwixt the buyer & seller, artificer and manufacture, debitor and creditor the most general questions, artificial rules, and usefull conclusions incident to traffique comprehended in two books : the first states and ponderates to equity & custome all usuall rules, legall bargains and contracts in wholesale or retail ... : the second book treats of geometricall problems and arithmeticall solutions ... : Architectonice, or, The art of building discovered /