“When the price of cattle, for example, rises so high that it is as profitable to cultivate land in order to raise food for them as in order to raise food for man, it cannot well go higher. If it did, more corn land would soon be turned into pasture. The extension of tillage, by diminishing the quantity of wild pasture, diminishes the quantity of butcher's meat which the country naturally produces without labour or cultivation, and by increasing the number of those who have either corn, or, what comes to the same thing, the price of corn, to give in exchange for it, increases the demand. The price of butcher's meat, therefore, and consequently of cattle, must gradually rise till it gets so high that it becomes as profitable to employ the most fertile and best cultivated lands in raising food for them as in raising corn. But it must always be late in the progress of improvement before tillage can be so far extended as to raise the price of cattle to this height; and till it has got to this height, if the country is advancing at all, their price must be continually rising. There are, perhaps, some parts of Europe in which the price of cattle has not yet got to this height. It had not got to this height in any part of Scotland before the union. Had the Scotch cattle been always confined to the market of Scotland, in a country in which the quantity of land which can be applied to no other purpose but the feeding of cattle is so great in proportion to what can be applied to other purposes, it is scarce possible, perhaps, that their price could ever have risen so high as to render it profitable to cultivate land for the sake of feeding them. In England, the price of cattle, it has already been observed, seems, in the neighbourhood of London, to have got to this height about the beginning of the last century; but it was much later probably before it got to it through the greater part of the remoter counties; in some of which, perhaps, it may scarce yet have got to it. Of all the different substances, however, which compose this second sort of rude produce, cattle is, perhaps, that of which the price, in the progress of improvement, first rises to this height.”