"Wheat, Barley, and Oats may be very expeditiously cleaned in great Perfection. When all the Barley is... screened, it is ready to put into Sacks for Market; but, in case some Seeds of Darnel should be left among the Barley, as if often happens, because these Seeds are so near the Bigness of a Barley-Corn, that they cannot be easily separated, it is not of great Importance or Damage to the Barley; for that this Seed is of such a Nature, as to add a Strength to the Liquor, and make the Beer or Ale, brewed from such Malt, the more potent. But the main Matter is to free it off its Ails and Tails; for, if these are left, in any Quantity, among the Barley, there will a lower Price be bid for it, than others that are free from such Trumpery. It is this that makes the Cleaners of Barley oftentimes walk on the thrashed Barley, to tread on and break oft these Ails; and sometimes neither Thrashing nor Treading will thoroughly break off these Ails enough to make the Parcel intirely clear of them. One Man will sometimes thrash and clean six or eight Bushels of Barley in one Day..."