Charles I assented to the Petition of Right and promised to observe it, but no provision was made for any tribunal independent of the king to determine whether his acts were in violation of any article of the Petition. Consequently, when afterward in the matter of the tonnage and poundage tax Parliament remonstrated against the imposition of the tax as a violation of the royal promise in assenting to the Petition of Right, the king abruptly ended the session and in his speech of prorogation denied the right of Parliament to interpret the Petition and asserted that it was for him alone to determine "the true intent thereof." Again, the legality of the imposition by the king of the "ship money" tax without the consent of Parliament was hopelessly questioned. The king procured from the judges an opinion that he could lawfully impose such a tax without awaiting the assent of Parliament, when necessary for the defense of the kingdom, and that he was the judge of the necessity and proper amount of the tax. But this was not the opinion of an independent judiciary. The judges at that time could be promoted, removed, or "recalled" at any time at the king's sole pleasure, and they well knew the king's obstinate insistence in the matter. Their opinion simply gave expression to the king's will, and hence inspired no respect. Finally, for want of an independent tribunal empowered to determine authoritatively between king and subject "the true intent" of the Petition of Right, the legal extent and limitation of the royal power, the lawfulness of its exercise upon the subject in a given case, the issues between them had to be submitted to the arbitrament of civil war, with the result that the monarchical system of government was overthrown. Its successor, an unchecked parliament, was no less arbitrary in many of its acts, and was in turn overthrown and the monarchy restored. The restored dynasty, however, obeying the impulse of all possessors of governmental powers, soon began again to claim and exercise autocratic power, to encroach upon the rights and liberties thought to have been secured to the subject by the royal assent to the Petition of Right and vindicated by successful resistance, and also to suspend the operation of the laws at his pleasure. Unfortunately again there was as yet no impartial, independent tribunal in England to determine authoritatively the line between the royal power and the specified rights of the subject. The judges were still removable at the king's sole pleasure. James II did not hesitate to use this power to obtain such opinions and decisions as he desired. Preparatory to the trial of the Quo Warranto case against the City of London to procure the forfeiture of its charter, the king removed Chief Justice Pemberton and appointed in his place the servile Saunders who had drawn the writ in the case and had conducted all the proceedings in behalf of the crown as its counsel to