Being usually a promise to pay coin, on demand, it can, in one sense, be considered honest only when the promise is kept. If the issues are excessive,--that is, if by increasing the volume of the money as a whole its value is lowered so that the coin is worth more in some other country than as a part of that money system,--the coin will leave the country, as has been explained in regard to gold. The paper simply acts as so much gold or silver would act if added to the currency, forcing out a certain amount of coin. Where both metals are used with the paper, the one to go would depend on which was worth the most, relatively, in other countries. If the issues of paper are continued long enough, all the coin will leave the country, and, if still continued, the value of the money will sink below that of the coin, as the paper will not leave the country, but will accumulate, lowering the value with each new issue. The system will then have changed to an inconvertible paper system, the value of the money being no longer dependent on the value of the coin on which it is based, and no longer affected by changes of money value in other countries, but determined wholly by the amount issued, relative to the demands of business in the country of issue. If the issues continue in excess of demand, the value will lower, even to the point of utter worthlessness; but if properly controlled and limited, the value of the money can be maintained at any point desired far more readily and easily than in the case of a convertible paper and coin system, since many variable forces are excluded when the convertibility is dropped. The amount of paper money that can be kept at par with coin under a convertible system bears no fixed relation to the amount of the coin. By a proper control of the volume of paper issues their value can be kept equal to coin value, with almost no coin in circulation, or in reserve. An excessive issue of the paper will cause coin to be exported, but this export may be checked, and an import produced by withdrawing some of the paper.