The negociator's magazine [electronic resource] : Or, The most authentick account yet published, of the monies, weights, and measures, of the principal places of trade in the known world. Also an account of the European exchanges in general, customs of merchants relating thereto; and rules and examples to cast them up by; with the nature and use of simple and compound arbitrations; and an history of the English gold and silver coins, for near 500 years past. To which are added, curious calculations of great use in the West-India Carolina, and New-England traders; and tables, shewing the intrinsick value of any foreign gold, or silver coin. All of great use of merchants and traders; and entirely necessary to those who would understand merchants accompts. The fifth edition, with many alternations, and great additions. By Richard Hayes, teacher of merchants accompts; late of Princes-street near the Bank of England, now of Queen-street near Cheapside.