The young merchant's assistant [electronic resource] : or, his business at the Custom-House made easy. Containing The Method of Computing all Manner of Duties, their Discompts, and Drawbacks, by several Ways practiced by the Merchants and Custom-House Officers. Also Instructions for such People that are design'd for Employments, as Masters of Ships, or in Husbanding the same; their whole Business of Reporting and Working a Ship; forming Freight-Notes; the Method of keeping a Freight-Book, and making up an Account of a Ship's Freight. Likewise the Manner of Proceeding in Cases of Single Entries, Entries of several Sorts of Merchandize, Post-Entries, Over-Entries, Warrants, Certificates, Debentures, Bounty-Money, &c. with Examples and Instructions throughout the whole. By Richard Hayes, Accomptant and Writing-Master. Never before Publish'd.