Romans, in the time of their greatest grandeur, for rare birds and fishes, may in this manner easily be accounted for. These prices were not the effects of the low value of silver in those times, but of the high value of such rarities and curiosities as human industry could not multiply at pleasure. The real value of silver was higher at Rome, for some time before and after the fall of the republic, than it is through the greater part of Europe at present. Three sestertii, equal to about sixpence sterling, was the price which the republic paid for the modius or peck of the tithe wheat of Sicily. This price, however, was probably below the average market price, the obligation to deliver their wheat at this rate being considered as a tax upon the Sicilian farmers.

When the Romans, therefore, had occasion to order more corn