In ancient times, too, it was usual to attempt to regulate the profits of merchants and other dealers, by regulating the price of provisions and ether goods. The assize of bread is, so far as I know, the only remnant of this ancient usage. Where there is an exclusive corporation, it may, perhaps, be proper to regulate the price of the first necessary of life; but, where there is none, the competition will regulate it much better than any assize. The method of fixing the assize of bread, established by the 31st of George II. could not be put in practice in Scotland, on account of a defect in the law, its execution depending upon the office of clerk of the market, which does not exist there. This defect was not remedied till the third of George III. The want of an assize occasioned no sensible inconveniency; and the establishment of one in the few places where it has yet taken place has produced no sensible advantage. In the greater part of the towns in Scotland, however, there is an incorporation of bakers, who claim exclusive privileges, though they are not very strictly guarded. The proportion between the different rates, both of wages and profit, in the different employments of labour and stock, seems not to be much affected, as has already been observed, by the riches or poverty, the advancing, stationary, or declining state of the society. Such revolutions in the public welfare, though they affect the general rates both of wages and profit, must, in the end, affect them equally in all different employments. The proportion between them, therefore, must remain the same, and cannot well be altered, at least for any considerable time, by any such revolutions. CHAPTER XI. OF THE RENT OF LAND.