The merchants map of commerce wherein the universal manner and matter relating to trade and merchandize are fully treated of, the standard and current coins of most princes and republicks observ'd, the real and imaginary coins of accounts and exchanges express'd, the natural products and artificial commodities and manufactures for transportation declar'd, the weights and measures of all eminent cities and towns of traffick in the universe, collected one into another, and all reduc'd to the meridian of commerce practis'd in the famous city of London / by Lewis Roberts, merchant.

CHAP. CCCCXXII. Of the Exchanges of Palermo and Mesina with Naples.

* 1.1PAlermo and Mesina doth Exchange with Naples, and gives posito Pomitos 166½ of 8 Picolis to have one Ducat of 5 Taries, I demand then, for Ounces 1053, Taries 6, and 2 Grains how many Ducats must I have? First multiply the said sum of Ounces by 30, to make them Taries, and then by 20 to make them Grains, adding to the multiplication 6 Taries, and 2 Grains which accompany the Ounces, and then they make Grains 631922, out of which to make them Pomitos take out the ¼, because that the Grain is worth 6 Picolis, and the Pomito is worth 8 Picolis, of which the 2 Picols overplus is the ¼ of 8, and then they make Pomitos 473942, which must be divided by the said 166½ the price of the Exchange, reducing them into ½ Picolis both on the one and on the other side, and by division they will make Ducats of Naples, multiplying the remainder by 100, and adding of two Cyphers, to bring them into Grains, because that the Ducat is 100 Grains, and the same will be Ducats 2846; and for the Grains 49, Tarics 2, and Grains 9, of Taries 5 per Ducat, which is to be rendred at Naples for the said sum of Ounces of money of Palermo; Example: 〈 math 〉〈 math 〉

* 1.2The proof of this account is seen when that Nuples doth Exchange for either Palermo or Mesina.

Notes

• * 1.1

  Exchanges of Palermo, &c. with Naples.
• * 1.2

  Proof.