Frequently the same proprietor in the same year plowed up pasture land for corn and laid arable to pasture. Tawney cites a case in which ninety-five acres of ancient pasture were brought under cultivation while thirty-five acres of arable were laid to grass.[30] In 1630 the Countess of Westmoreland enclosed and converted arable, but tilled other land instead.[31] The enclosure movement, then, did not end at the time when it is usually thought to have ended. Since it is difficult to suppose that the price of wool could have been advancing constantly throughout two centuries, without causing such a readjustment in the use of land that no further withdrawal of land from tillage for pasture would be necessary, the continuance of the conversion of arable to pasture in the seventeenth century throws suspicion upon the whole explanation of the enclosure movement as due to the increased demand for wool. Miss Leonard, indeed, advances the hypothesis that the price of wool ceased to be the cause of enclosure during the seventeenth century, but that other price changes had the same effect: The increase in pasture in the sixteenth century was rendered profitable by the rapid increase in the price of wool, but, in the seventeenth century, this cause ceases to operate. The change to pasture, however, continued, partly owing to a great rise in the price of cattle, and partly because the increase in wages made it less profitable to employ the greater number of men necessary for tilling the fields.[32]