Neither the annual supply of gold nor the total amount used as money is the principal factor in determining its value. It cannot be doubted that if all the nations now using the gold system were to abandon it, the value of the metal would be but a fraction of its present value, and on the other hand, if all the nations now using silver and paper, in whole or in part, as money, were to change to the gold standard, its value would be increased to many fold what it is now. The legislation, therefore, of all countries is the great factor determining coin value, not alone in the country legislating, but also in all other countries using gold and silver as a basis for their system. The factor next in importance is the extent to which credit is used in the place of money. The total production of gold is so small beyond the amount used in the arts and sciences that it would require a great change in its value, and years of time, for any increased production due to higher value to affect materially the quantity of gold coin in use. The production of gold depends more on chance, and less on its labour cost, than the production of almost any other commodity; and though it would be, and is, stimulated somewhat by a higher value, there is no such certainty of its increased production being commensurate with the increased labour expended on it as there is in the case of most commodities. _The Silver Standard._ When the money system of a country is based on silver, and that metal has free and unlimited coinage in the mints, as gold has in countries using the gold standard, the same laws apply as in the case of gold. Exactly the same forces operate to affect the volume and value of the money except that the production of silver, its use by other nations, etc., are the factors, instead of gold supply and use. The coin and the bullion are equal in value, weight for weight, and Gresham's law applies the same as it does to gold to regulate the flow of silver from one silver-standard country to another. In some silver-standard countries, however, the coinage is not free and unlimited, the government purchasing the silver at its market rate and coining it in such quantities as it sees fit. In this case the bullion value does not coincide with the coinage value: the latter depends entirely on the amount that is coined, relative to the demand for money, and is independent of the bullion value of the silver. The coin will be of higher value than the bullion, and will not be exported to other countries, as the bullion is equally valuable for that purpose and less costly. It is evident that the value of money is just as dependent on chance,--that is, on a variety of causes too intricate and uncertain to be controlled,--in the case of the silver standard with free coinage as in the case of gold; but as some of the forces acting on silver are different from those acting on gold, one standard may be much more stable than the other. _Bi-metallism._