On the 21st of April, 1741, the Supreme Court convened.[246] Judges Frederick Phillipse and Daniel Horsemanden called the _grand jury_. The members were as follows: Robert Watts, merchant, foreman; Jeremiah Latouche, Joseph Read, Anthony Rutgers, John M'Evers, John Cruger, jun., John Merrit, Adoniah Schuyler, Isaac DePeyster, Abraham Ketteltas, David Provoost, Rene Hett, Henry Beeckman, jun., David van Horne, George Spencer, Thomas Duncan, and Winant Van Zandt,--all set down as merchants,--a respectable, intelligent, and influential grand jury! Judge Phillipse informed the jury that the people "have been put into many frights and terrors," in regard to the fires; that it was their duty to use "all lawful means" to discover the guilty parties, for there was "much room to suspect" that the fires were not accidental. He told them that there were many persons in jail upon whom suspicion rested; that arson was felony at common law, even though the fire is extinguished, or goes out itself; that arson was a deep crime, and, if the perpetrators were not apprehended and punished, "who can say he is safe, or where will it end?" The learned judge then went on to deliver a moral lecture against the wickedness of selling "penny drams" to Negroes, without the consent of their masters. In conclusion, he charged the grand jury to present "all conspiracies, combinations and other offences." It should be kept in mind that Mary Burton was only a witness in the burglary case already mentioned. Up to that time there had been no fires. The fires, and wholesale arrests of innocent Negroes, followed the robbery. But the grand jury called Mary Burton to testify in reference to the fires. She refused to be sworn. She was questioned concerning the fires, but gave no answer. Then the proclamation of the mayor, offering protection, pardon, freedom, and one hundred pounds, was read. It had the desired effect. The girl opened her mouth, and spake all the words that the jury desired. At first she agreed to tell all she knew about the stolen goods, but would say nothing about the fires. This declaration led the jury to infer that she could, but would not say any thing about the fires. After a moral lecture upon her duty in the matter in the light of eternal reward, and a reiteration of the proffered reward that then awaited her wise decision, her memory brightened, and she immediately began to tell _all_ she knew. She said that a Negro named Prince, belonging to a Mr. Auboyman, and Prince (Varick) brought the goods, stolen from Mr. Hogg's house, to the house of her master, and that Hughson, his wife, and Peggy (Carey) received them; further, that Caesar, Prince, and Cuffee (Phillipse) had frequently met at Hughson's tavern, and discoursed about burning the fort; that they had said they would go down to the Fly (the east end of the city), and burn the entire place; and that Hughson and his wife had assented to these insurrectionary remarks, and promised to assist them.