I have not, however, concluded with equal certainty that the rising and sinking in the value of bullion, _with respect to coin_, ought to imply any change upon the value of the money-unit; because I have not been able to determine whether prices ought to be considered as most attached to the denominations of the coin, or to the grains of the metals: except indeed in one case, to wit, when the quantity of the metals comes to be augmented or diminished in the coin. In that case, I have not hesitated to decide that, sooner or later, the influence of trade must operate a rise or a fall in the current value of the specie, which will be marked by an apparent rise or fall in the price of all commodities. [Sidenote: In speaking, we do not distinguish between pure metal and that which is mixed with alloy.] _3tio_, Our comparing the value of silver sometimes with the pure metal, sometimes with that compounded with alloy, involves us frequently in a language which is hardly to be understood. Says one, a pound of silver, troy, is worth 67 shillings. He means a pound of fine silver. We in England, says another, coin our pound troy of silver into 62 shillings. He means the pound of standard silver, which contains 18 penny weights of copper. Says a third, our pound of silver, which we coin into 62 shillings, is not worth 57_s._ 6_d._ He understands the shillings of fine silver of the same weight with those of standard silver. Another affirms, that an ounce of standard silver, which, at the mint, and in the coin, is worth no more than 5_s._ 2_d._ is worth in the market 5_s._ 6_d._ He means, that one must pay at that rate for silver bullion, when they purchase it with over-rated gold. At last comes Mr. Cantillon, who, as a proof of the decline of the English commerce, affirms to us, in his Analysis of trade, p. 133. that both silver and gold bullion are dearer in the London market than in the coin: at the same time, he might have discovered the cause of it, from the lightness of the gold and silver currency at the time he wrote; since the phænomenon could proceed from nothing else: the new guineas must then have been sent abroad. Says a Frenchman, one of our crowns of 3 livres, which passes for 60 sols, is intrinsically worth no more than 56½ sols. He means, that the fine silver it contains is worth no more than 56½ sols, according to the mint price of the fine metals. [Sidenote: Of the abuse of terms relative to the denomination of coins.] _4to_, Another cause of perplexity in the money-jargon, is the prodigious abuse of the terms which express the denominations of the coin, or the numerary unit. French historians write familiarly of sums of money in livres and crowns, through all the stages of the monarchy. English writers (for the most part) do the same, in speaking of pounds sterling. Nothing however is more different than the ideas expressed by the same term. [Sidenote: This illustrated by an example.]