“May 13, 1830.

“GENTLEMEN OF THE COMMITTEE OF VIGILANCE,—­Hearing that you have taken up four young men on suspicion of being concerned in the murder of Mr. White, I think it time to inform you that Steven White came to me one night and told me, if I would remove the old gentleman, he would give me five thousand dollars; he said he was afraid he would alter his will if he lived any longer.  I told him I would do it, but I was afeared to go into the house, so he said he would go with me, that he would try to get into the house in the evening and open the window, would then go home and go to bed and meet me again about eleven.  I found him, and we both went into his chamber.  I struck him on the head with a heavy piece of lead, and then stabbed him with a dirk; he made the finishing strokes with another.  He promised to send me the money next evening, and has not sent it yet which is the reason that I mention this.

“Yours, &c.,

“GRANT.”

This letter was directed on the outside to the “Hon. Gideon Barstow, Salem,” and put into the post-office on Sunday evening, May 16, 1830.

“Lynn, May 12, 1830.

“Mr. White will send the $5,000, or a part of it, before to-morrow night, or suffer the painful consequences.

“N.  CLAXTON, 4TH.”

This letter was addressed to the “Hon. Stephen White, Salem, Mass.,” and was also put into the post-office in Salem on Sunday evening.

When Knapp delivered these letters to his friend, he said his father had received an anonymous letter, and “What I want you for is to put these in the post-office in order to nip this silly affair in the bud.”

The Hon. Stephen White, mentioned in these letters, was a nephew of Joseph White, and the legatee of the principal part of his large property.

When the Committee of Vigilance read and considered the letter, purporting to be signed by Charles Grant, Jr., which had been delivered to them by Captain Knapp, they were impressed with the belief that it contained a clew which might lead to important disclosures.  As they had spared no pains or expense in their investigations, they immediately despatched a discreet messenger to Prospect, in Maine; he explained his business confidentially to the postmaster there, deposited a letter addressed to Charles Grant, Jr., and awaited the call of Grant to receive it.  He soon called for it, when an officer, stationed in the house, stepped forward and arrested Grant.  On examining him, it appeared that his true name was Palmer, a young man of genteel appearance, resident in the adjoining town of Belfast.  He had been a convict in Maine, and had served a term in the State’s prison in that State.  Conscious that the circumstances justified the belief that he had had a hand in the murder, he readily made known, while he protested his own innocence, that he could unfold the whole mystery.  He then disclosed that