It can only swallow up a sum equal to what is necessary for circulating the payments of the city of Amsterdam. Were a sum exceeding that to be shut up in the bank, and were the credits written in the books of the bank to exceed that proportion, it is plain, that the value of the bank money would sink immediately. The reason is obvious: the credits transferable are of no use to those who have no occasion to transfer; that is, to pay, lend, or exchange at Amsterdam. So soon, then, as all the demand of Amsterdam is satisfied, the proprietors of the overplus will seek to realize their superfluous credit, in order to invest the value arising from it, in some other place where a demand may arise. In order to realize, they must sell their bank credit for coin; because the bank pays only in transfer. Coin then would be demanded preferably to credit in bank; consequently, coin would rise in its proportional value to bank money, or bank money would lose, which is the same thing. This fluctuation between bank money and coin, leads me to explain what is called the agio of the bank. ------------------------------------------------------------------------ CHAP. XXXVIII. _Of the Agio of the Bank of Amsterdam._ We have pointed out one motive for establishing a bank of deposit at Amsterdam, viz. that of fixing the residence of trading men in that city. Another was, to prevent the inconveniencies to which a small state was exposed, by the introduction of bad coin, from all the neighbouring countries in Europe, with whom they traded. In the territory of Holland there are no mines of gold and silver; consequently all they have comes from other countries, as the return of a favourable balance upon their commerce. At the time the bank was established, the republic was in a state of infancy; and any coin they had, was that of their old masters the Spaniards. This was unequally coined; many pieces were light; many had been clipped and washed. As they extended their traffic, they were obliged to receive great quantities from Germany, which was still worse. In order then to prevent the circulation of such coin, and the perplexities occasioned by it in all accounts, they established a bank, and fixed the standard upon a silver coin called the ducatoon, to which they gave the denomination of 3 florins or guilders bank money. But as this coin also was unequal, like all the rest of the specie in Europe, before the introduction of milled coin, and the policy of weighing piece by piece at the mint, the bank appointed the ducatoons to be received in bags of 200 pieces, weighing together 26 marcs 5 ounces 10 engles of Amsterdam troes, or gold weight; which being reduced to aces, (the lowest denomination in this weight) make 136,640 aces. This divided by 200, gives, for the weight of 1 ducatoon, 683.2 aces.