414 The Period of Constitution This was perhaps a bit of political theorising by the antibaronial party. But it is significant that such a theory could have been formulated. Supposing, how- ever, this theory to have become realised most perfectly, it could still only have meant that the king had to obtain the consent of Parliament to measures he himself pro- posed; there was nothing in it to interfere with the monopoly of initiating measures which he had always possessed. No assembly can progress at all hopefully in the direction of any kind of legislative activity that is to give it an independent position in the state unless it has the means and the power to introduce measures of its own. To understand how the English Parliament gained these another side of its early history must be examined. As the knights and burgesses began to sit more regularly, for part of the session at least, with the great council, now usually called a parliament, it was as a rule in a ses- sion of parliament when that body performed its regular duties as a high court.1 This judicial side of the work continued and has never wholly passed away. This work came to Parliament in the form of petitions. These petitions were received without charge and were of the most varied sort, most of them from individuals. Many of them alleged the law's delay or stated some other bur- den or disadvantage under which the petitioner found himself; some of them were because the Chancellor could not issue a new writ which the case seemed to demand or presented some other phase of novelty or difficulty. These petitions came first to the "receivers and triers" who were often appointed in advance of a session of Parliament. The receivers were clerks whose work was merely mechanical; the triers were judges plus, ordinarily, some earls and barons. The triers dealt finally with many petitions, sending them to the ordinary courts where they belonged, which was a virtual rejection, send- ing them to the courts with an order for some special 1 See above, pp. 397, 398.