sentences:  Instead lay purchasers of appropriated tithes, termed 'impropriators', were required in these instances both to nominate a clergyman to the diocesan bishop to serve the cure, and also to provide a fixed stipend of appropriate annual value to support the new perpetual curacy.In practice, most of the nominated incumbents to the new perpetual curacies were the canons or stipendiaries who had been serving those cures before the dissolution.Over the years, the arrangement by which the impropriator acted as both patron and paymaster of a perpetual curacy proved liable to break down, especially as the original cash stipend could be reduced to a small part of its former value through inflation.