Franklin lost no time, after reaching London, in waiting upon Lord Grenville, then president of the council, and held with him a conversation which he deemed of so much importance that he made a record of it immediately upon returning to his lodgings. Nor did he exaggerate its importance, for in it were the germs of the revolt and independence of the North American colonies. "You Americans," said Grenville, "have wrong ideas of the nature of your constitution; you contend that the king's instructions to his governors are not laws, and think yourselves at liberty to regard or disregard them at your own discretion. But those instructions are not like the pocket instructions given to a minister going abroad for regulating his conduct in some trifling point of ceremony. They are first drawn up by judges learned in the law; they are then considered, debated, and perhaps amended in council, after which they are signed by the king. They are then, so far as they relate to you, the _law of the land_, for the king is the legislature of the colonies." Franklin frankly told his lordship that this was new doctrine,--that he understood from the colonial charters that the laws of the colonies were to be made by their assemblies, approved by the king, and when once approved the king alone could neither alter nor amend them. Franklin admits that he was alarmed by this conversation, but he was not as much alarmed as he had reason to be, for it distinctly raised the issue between the king and a fraction of his people which was to require a seven years' war to decide. Franklin next sought an interview with the brothers Penn to lay before them the grievances of the assembly. Finding them entirely inaccessible to his reasonings, he supplied the material for an historical review of the controversy between the assembly and the proprietaries, which made an octavo volume of 500 pages. The success of Franklin's mission thus far was not encouraging, for he appealed to a class largely interested in the abuses of which he complained. Meantime, Governor Denny, who had been recently sent out to the province by the proprietaries, tired of struggling with the public opinion which was surging about him in Pennsylvania, and in disregard of his instructions, assented to the passing of laws which taxed equally the entire landed property of the province, and assumed that the assembly was the proper judge of the requirements of the people it represented. An equivalent in paper money was issued upon the faith of this tax. The proprietaries were very angry with the governor, recalled him, and threatened to prosecute him for a breach of his instructions. But they never carried their threat into execution.