We must, in the next place, give an account of the ores of brass,1216 a metal which, in respect of utility, is next in value; indeed the Corinthian brass comes before silver, not to say almost before gold itself. It is also, as I have stated above,1217 the standard of monetary value;1218 hence the terms “æra militum,” “tribuni ærarii,” “ærarium,” “obærati,” and “ære diruti.”1219 I have already mentioned for what length of time the Roman people employed no coin except brass;1220 and there is another ancient fact which proves that the esteem in which it was held was of equal antiquity with that of the City itself, the circumstance that the third associated body1221 which Numa established, was that of the braziers.