The greatest of the successors of Knox was Andrew Melville. Two years after Knox's death Melville came fresh from a training among the French Huguenots to take up and carry forward his work. With less prophetic fire than his master he possessed as fierce a boldness, a greater disdain of secular compromises, a lofty pride in his calling, a bigoted faith in Calvinism that knew neither rest nor delay in its full establishment throughout the land. As yet the system of Presbyterian faith and discipline, with the synods and assemblies in which it was embodied, though it had practically won its hold over southern Scotland, was without legal sanction. The demand of the ministers for a restitution of the Church lands and the resolve of the nobles not to part with their spoil had caused the rejection of the Book of Discipline by the Estates. The same spirit of greed secured the retention of a nominal episcopacy. Though the name of bishops and archbishops appeared "to many to savour of Papistry," bishops and archbishops were still named to vacant dioceses as milch-cows, through whom the revenues of the sees might be drained by the great nobles. Against such "Tulchan-bishops," as they were nicknamed by the people's scorn, a "Tulchan" being a mere calf-skin stuffed with hay by which a cow was persuaded to give her milk after her calf was taken from her, Knox had not cared to protest; he had only taken care that they should be subject to the General Assembly, and deprived of all jurisdiction or authority beyond that of a Presbyterian "Superintendent." His strong political sense hindered a conflict on such a ground with the civil power, and without a conflict it was plain that no change could come. The Regent Morton, Calvinist as he was, supported the cause of Episcopacy, and the fact that bishops formed an integral part of the estates of the realm made any demand for their abolition distasteful to the large mass of men who always shrink from any constitutional revolution. [Sidenote: Presbyterianism established.]