The Wealth of Nations by Part 4 Chapter 8 Page 34

pasture, and upon the management and cleanliness of the sheep, during the whole progress of the growth of the fleece, the attention to these circumstances, it may naturally enough be imagined, can never be greater than in proportion to the recompense which the price of the fleece is likely to make for the labour and expense which that attention requires.

It happens, however, that the goodness of the fleece depends, in a great measure, upon the health, growth, and bulk of the animal; the same attention which is necessary for the improvement of the carcase is, in some respects, sufficient for that of the fleece. Notwithstanding the degradation of price, English wool is said to have been improved considerably during the course even of the present century. The improvement might perhaps have been greater if the price had been