The Wealth of Nations by Part 1 Chapter 10 Page 55

cultivated and worse inhabited, the greater part of landlords and farmers could not otherwise provide themselves with the extraordinary number of hands which country labour requires at certain season. The daily or weekly recompense which such labourers occasionally received from their masters was evidently not the whole price of their labour. Their small tenement made a considerable part of it. This daily or weekly recompense, however, seems to have been considered as the whole of it, by many writers who have collected the prices of labour and provisions in ancient times, and who have taken pleasures in representing both as wonderfully low.

The produce of such labour comes frequently cheaper to market than would otherwise suitable to its nature. Stockings in many parts of Scotland are knit much cheaper than they can