The hop-Planter's assistant [electronic resource] : containing, an accurate and exact collection of useful tables, shewing the price of any quantity of hops, &c. from One Pound to Twenty Hundred Weight, by the Addition of One Shilling from Twenty Shillings per Hundred to Ten Pounds per Hundred, all Fractional Parts (of no Importance in Trade) only omitted. Intended Not only for the Use of Those that deal in Hops, but for Those likewise who are concern'd in divers other Branches of Trade and Commerce: to which is added, an useful table, for those that deal in clover-seed, which being usually bought by the Bushel, shews the Price of One Hundred, by the Addition of Six-Pence from Eight Shillings per Bushel to Forty Shillings per Bushel. By John Rogerson.