Thus, in 1436, it was enacted, that wheat might be exported without a licence when the price was so low as six shillings and eightpence: and in 1463, it was enacted, that no wheat should be imported if the price was not above six shillings and eightpence the quarter: The legislature had imagined, that when the price was so low, there could be no inconveniency in exportation, but that when it rose higher, it became prudent to allow of importation. Six shillings and eightpence, therefore, containing about the same quantity of silver as thirteen shillings and fourpence of our present money (one-third part less than the same nominal sum contained in the time of Edward III), had, in those times, been considered as what is called the moderate and reasonable price of wheat.
In 1554, by the 1st and 2nd of Philip and Mary, and in 1558, by the 1st of Elizabeth, the exportation of wheat was in the same manner prohibited, whenever the price of the quarter should exceed six shillings and eightpence, which did not then contain two penny worth more silver than the same nominal sum does at present. But it had soon been found, that to restrain the exportation of wheat till the price was so very low, was, in reality, to prohibit it altogether. In 1562, therefore, by the 5th of Elizabeth, the exportation of wheat was allowed from certain ports, whenever the price of the quarter should not exceed ten shillings, containing nearly the same quantity of silver as the like nominal sum does at present. This price had at this time, therefore, been considered as what is called the moderate and reasonable price of wheat. It agrees nearly with the estimation of the Northumberland book in 1512.
That in France the average price of grain was, in the same manner, much lower in the end of the fifteenth and beginning of the sixteenth century, than in the two centuries preceding, has been observed both by Mr Dupré de St Maur, and by the elegant author of the Essay on the Policy of Grain. Its price, during the same period, had probably sunk in the same manner through the greater part of Europe.