Palmer says he made a visit to the Crowninshields, on the 9th of April. George then asked him whether he had heard of the murder. Richard inquired whether he had heard the music at Salem. They said that they were suspected, that a committee had been appointed to search houses; and that they had melted up the dagger, the day after the murder, because it would be a suspicious circumstance to have it found in their possession. Now this committee was not appointed, in fact, until Friday evening. But this proves nothing against Palmer; it does not prove that George did not tell him so; it only proves that he gave a false reason for a fact. They had heard that they were suspected; how could they have heard this, unless it were from the whisperings of their own consciences? Surely this rumor was not then public.

About the 27th of April, another attempt was made by the Knapps to give a direction to public suspicion. They reported themselves to have been robbed, in passing from Salem to Wenham, near Wenham Pond. They came to Salem and stated the particulars of the adventure. They described persons, their dress, size, and appearance, who had been suspected of the murder. They would have it understood that the community was infested by a band of ruffians, and that they themselves were the particular objects of their vengeance. Now this turns out to be all fictitious, all false. Can you conceive of any thing more enormous, any wickedness greater, than the circulation of such reports? than the allegation of crimes, if committed, capital? If no such crime had been committed, then it reacts with double force upon themselves, and goes very far to show their guilt. How did they conduct themselves on this occasion? Did they make hue and cry? Did they give information that they had been assaulted that night at Wenham? No such thing. They rested quietly that night; they waited to be called on for the particulars of their adventure; they made no attempt to arrest the offenders; this was not their object. They were content to fill the thousand mouths of rumor, to spread abroad false reports, to divert the attention of the public from themselves; for they thought every man suspected them, because they knew they ought to be suspected.

The manner in which the compensation for this murder was paid is a circumstance worthy of consideration. By examining the facts and dates, it will satisfactorily appear that Joseph Knapp paid a sum of money to Richard Crowninshield, in five-franc pieces, on the 24th of April. On the 21st of April, Joseph Knapp received five hundred five-franc pieces, as the proceeds of an adventure at sea. The remainder of this species of currency that came home in the vessel was deposited in a bank at Salem. On Saturday, the 24th of April, Frank and Richard rode to Wenham. They were there with Joseph an hour or more, and appeared to be negotiating private business. Richard continued in the chaise; Joseph came to the chaise and conversed with him. These facts are proved by Hart and Leighton, and by Osborn's books. On Saturday evening, about this time, Richard Crowninshield is proved, by Lummus, to have been at Wenham, with another person whose appearance corresponds with Frank's. Can any one doubt this being the same evening? What had Richard Crowninshield to do at Wenham, with Joseph, unless it were this business? He was there before the murder; he was there after the murder; he was there clandestinely, unwilling to be seen. If it were not upon this business, let it be told what it was for. Joseph Knapp could explain it; Frank Knapp might explain it. But they do not explain it; and the inference is against them.

Immediately after this, Richard passes five-franc pieces; on the same evening, one to Lummus, five to Palmer; and near this time George passes three or four in Salem. Here are nine of these pieces passed by them in four days; this is extraordinary. It is an unusual currency; in ordinary business, few men would pass nine such pieces in the course of a year. If they were not received in this way, why not explain how they came by them? Money was not so flush in their pockets that they could not tell whence it came, if it honestly came there. It is extremely important to them to explain whence this money came, and they would do it if they could. If, then, the price of blood was paid at this time, in the presence and with the knowledge of this defendant, does not this prove him to have been connected with this conspiracy?

Observe, also, the effect on the mind of Richard of Palmer's being arrested and committed to prison; the various efforts he makes to discover the fact; the lowering, through the crevices of the rock, the pencil and paper for him to write upon; the sending two lines of poetry, with the request that he would return the corresponding lines; the shrill and peculiar whistle; the inimitable exclamations of "Palmer! Palmer! Palmer!" All these things prove how great was his alarm; they corroborate Palmer's story, and tend to establish the conspiracy.

Joseph Knapp had a part to act in this matter. He must have opened the window, and secreted the key; he had free access to every part of the house; he was accustomed to visit there; he went in and out at his pleasure; he could do this without being suspected. He is proved to have been there the Saturday preceding.

If all these things, taken in connection, do not prove that Captain White was murdered in pursuance of a conspiracy, then the case is at an end.

Savary's testimony is wholly unexpected. He was called for a different purpose. When asked who the person was that he saw come out of Captain White's yard between three and four o'clock in the morning, he answered, Frank Knapp. It is not clear that this is not true. There may be many circumstances of importance connected with this, though we believe the murder to have been committed between ten and eleven o'clock. The letter to Dr. Barstow states it to have been done about eleven o'clock; it states it to have been done with a blow on the head, from a weapon loaded with lead. Here is too great a correspondence with the reality not to have some meaning in it. Dr. Peirson was always of the opinion, that the two classes of wounds were made with different instruments, and by different hands. It is possible that one class was inflicted at one time, and the other at another. It is possible that on the last visit the pulse might not have entirely ceased to beat, and then the finishing stroke was given. It is said, that, when the body was discovered, some of the wounds wept, while the others did not. They may have been inflicted from mere wantonness. It was known that Captain White was accustomed to keep specie by him in his chamber; this perhaps may explain the last visit. It is proved, that this defendant was in the habit of retiring to bed, and leaving it afterwards, without the knowledge of his family; perhaps he did so on this occasion. We see no reason to doubt the fact; and it does not shake our belief that the murder was committed early in the night.

What are the probabilities as to the time of the murder? Mr. White was an aged man; he usually retired to bed at about half-past nine. He slept soundest in the early part of the night; usually awoke in the middle and latter part; and his habits were perfectly well known. When would persons, with a knowledge of these facts, be most likely to approach him? Most certainly, in the first hour of his sleep. This would be the safest time. If seen then going to or from the house, the appearance would be least suspicious. The earlier hour would then have been most probably selected.

Gentlemen, I shall dwell no longer on the evidence which tends to prove that there was a conspiracy, and that the prisoner was a conspirator. All the circumstances concur to make out this point. Not only Palmer swears to it, in effect, and Leighton, but Allen mainly supports Palmer, and Osborn's books lend confirmation, so far as possible, from such a source. Palmer is contradicted in nothing, either by any other witness, or any proved circumstance or occurrence. Whatever could be expected to support him does support him. All the evidence clearly manifests, I think, that there was a conspiracy; that it originated with Joseph Knapp; that defendant became a party to it, and was one of its conductors, from first to last. One of the most powerful circumstances is Palmer's letter from Belfast. The amount of this is a direct charge on the Knapps of the authorship of this murder. How did they treat this charge; like honest men, or like guilty men? We have seen how it was treated. Joseph Knapp fabricated letters, charging another person, and caused them to be put into the post-office.