Rules for the port of London [electronic resource] : or, the water-side practice. Wherein is shewn, the method to compute the customs by the Book of Rates. Likewise the Manner of making Entries, paying Custom, Free, or by Certificate. Penalties in several Acts of Parliament, relating to Imports and Exports. The Tares and Draughts allowed by the King to the Merchants. With the Fees due to the Officers. And many other things, necessary in customhouse dispatches. Composed from the most Authentick Pieces. By Richard Hayes, Accomptant and Writing-Master, for the use of his Scholars.