We have seen that ducats fluctuate in their value, having no legal denomination, which obliged us to state the current value of a marc of them at 71.687 ducats, not being able to express that value in florins; because of the unsettled denomination of that species. Let us now specify that value in florins, upon three suppositions. The first, that the ducat is worth what it passes for among the people, to wit, 5_f._ 5_st._ The second, at the value of new ducats from the mint, to wit, 5_f._ 4⅜_st._ The last, at the merchant price of good ducats, which have circulated, to wit, 5_f._ 4⅜_st._ In the first case (the ducat at 5_f._ 5_st._) 71.687 ducats are worth 376.35 florins, this being the value of a marc of fine gold in ducats, and the marc containing 5120 aces; divide the last by the first, you have 13.604 aces of fine gold for the florin. In the second case (the ducat at 5_f._ 4⅝_st._) 71.687 ducats are worth 375.04 florins; by which number divide 5120 as before, you have 13.651 aces of fine gold for the florin. In the last case (the ducat at 5_f._ 4⅜_st._) 71.687 ducats are worth 374.11; by which number dividing 5120, you have 13.685 aces of fine gold for the florin, which comes within a trifle of the florin in riders. [Sidenote: by which it appears that the late war has raised the value of gold, and set the market price of the metals in Holland at 1 to 14.785.] But now (in June 1762) I learn, that the course of new ducats from the mint in the Holland-market, is got up to 5_f._ 5½_st._ In this case, 71.687 ducats are worth 378.1 florins; by which number dividing 5120, as before, you have 13.541 aces of fine gold for the florin. If we seek here the proportion between the gold and silver, we must state thus. If a florin in ducats contain 13.541 aces of fine gold, and a florin in silver coin contain as above 200.21 aces of fine silver, then 13.541 : 200.21 :: 1 : 14.785. So the effect of this war has already been to raise the value of gold 1.12 _per cent._ above what it was esteemed to be, when the riders were coined. The proportion as to riders is, as before, 1 to 14.62. [Sidenote: Which is a rise upon the value of gold of 1.12 per cent.] The present proportion as to ducats is 1 to 14.785. 14.62 : 100 :: 14.785 : 101.12.