According to Quaker custom, Penn kept his hat on before the mayor, and this so maddened that official, that he said the prisoner "should have his hat pulled off, for all he was Admiral Penn's son." Then he went on to abuse the Admiral himself, saying that he had starved the sailors of his fleet, and repeating other stories that were popular among the Admiral's enemies. He threatened to send young William to Bridewell Prison, and see that he was soundly whipped! Finally Penn was taken to a certain jail known as the Black Dog, where he was locked up with a number of other Quakers and Baptists and Independents, who had all been holding meetings in despite of the law. From the Black Dog William wrote to his father. "I am very well," said he, "and have no trouble upon my spirits, besides my absence from thee, especially at this juncture, but otherwise I can say, I was never better; and what they have to charge me with is harmless." Penn and a man named William Mead were put on trial in the Old Bailey early in September, 1670, charged with having preached at an unlawful meeting, thereby causing a great concourse and tumult, to the disturbance of the king's peace and the great terror of many of his subjects. The two prisoners went into court with their hats on, but the officers promptly pulled the hats off. Thereupon the judges ordered the officers to put the hats again on the prisoners' heads, and began to question them about their wearing hats in court. This was regarded as very disrespectful, and could not pass unreproved. Finally the judges fined each man forty marks for such "contempt of court." The prisoners were not allowed lawyers to defend them, and the judges proceeded to make sport of the two Quakers, as if the trial were a form of bull-baiting. Penn said that he had broken no law, but had only been worshiping God according to his own conscience. He stood up for his rights as an Englishman, and evidently impressed the jury with the justice of his claims, for, in spite of all the efforts of the judges, the jury would only find him "guilty of speaking" in Gracechurch Street, and of no crime whatever. The judges sent the jury out again and again, finally keeping them locked up for two days and nights without beds or food, but the jury were not to be browbeaten. The judges at last had to accept the verdict, "not guilty," but in revenge fined each of the prisoners forty marks and ordered them imprisoned until the fines were paid, and in addition actually fined the jury for bringing in what they considered a mock verdict!