The irish comes commercii, [electronic resource] : or trader's-companion. Containing Exact and Useful Tables, shewing the Value of any Quantity of Goods or Wares ready cast up, more adapted to Merchants Use, than any other extant. Calculated mostly by Edward Hatton, Gent. To which are prefixed, The New Table of Coin, as the same was made current by the Lords Justices Proclamation, since the 8th Day of July, 1751: And a Table of the Number of Yards in the several Scores of Linen, from 1 to 150. These last Calculated originally, and the whole book cast up in manuscript, and corrected at the press, by John Watson, Bookseller.