You have all witnessed the uncertainty of testimony, when witnesses are called to testify what other witnesses said. Several respectable counsellors have been summoned, on this occasion, to give testimony of that sort. They have, every one of them, given different versions. They all took minutes at the time, and without doubt intend to state the truth. But still they differ. Mr. Shillaber's version is different from every thing that Southwick has stated elsewhere. But little reliance is to be placed on slight variations in testimony, unless they are manifestly intentional. I think that Mr. Shillaber must be satisfied that he did not rightly understand Mr. Southwick. I confess I misunderstood Mr. Shillaber on the former trial, if I now rightly understand him. I, therefore, did not then recall Mr. Southwick to the stand. Mr. Southwick, as I read it, understood Mr. Shillaber as asking him about a person coming out of Newbury Street, and whether, for aught he knew, it might not be Richard Crowninshield, Jr. He answered, that he could not tell. He did not understand Mr. Shillaber as questioning him as to the person whom he saw sitting on the steps of the rope-walk. Southwick, on this trial, having heard Mr. Shillaber, has been recalled to the stand, and states that Mr. Shillaber entirely misunderstood him. This is certainly most probable, because the controlling fact in the case is not controverted; that is, that Southwick did tell his wife, at the very moment he entered his house, that he had seen a person on the rope-walk steps, whom he believed to be Frank Knapp. Nothing can prove with more certainty than this, that Southwick, at the time, thought the person whom he thus saw to be the prisoner at the bar.

Mr. Bray is an acknowledged accurate and intelligent witness. He was highly complimented by my brother on the former trial, although he now charges him with varying his testimony. What could be his motive? You will be slow in imputing to him any design of this kind. I deny altogether that there is any contradiction. There may be differences, but not contradiction. These arise from the difference in the questions put; the difference between believing and knowing. On the first trial, he said he did not know the person, and now says the same. Then, we did not do all we had a right to do. We did not ask him who he thought it was. Now, when so asked, he says he believes it was the prisoner at the bar. If he had then been asked this question, he would have given the same answer. That he has expressed himself more strongly, I admit; but he has not contradicted himself. He is more confident now; and that is all. A man may not assert a thing, and still may have no doubt upon it. Cannot every man see this distinction to be consistent? I leave him in that attitude; that only is the difference. On questions of identity, opinion is evidence. We may ask the witness, either if he knew who the person seen was, or who he thinks he was. And he may well answer, as Captain Bray has answered, that he does not know who it was, but that he thinks it was the prisoner.

We have offered to produce witnesses to prove, that, as soon as Bray saw the prisoner, he pronounced him the same person. We are not at liberty to call them to corroborate our own witness. How, then, could this fact of the prisoner's being in Brown Street be better proved? If ten witnesses had testified to it, it would be no better. Two men, who knew him well, took it to be Frank Knapp, and one of them so said, when there was nothing to mislead them. Two others, who examined him closely, now swear to their opinion that he is the man.

Miss Jaqueth saw three persons pass by the rope-walk, several evenings before the murder. She saw one of them pointing towards Mr. White's house. She noticed that another had something which appeared to be like an instrument of music; that he put it behind him and attempted to conceal it. Who were these persons? This was but a few steps from the place where this apparent instrument of music (of music such as Richard Crowninshield, Jr. spoke of to Palmer) was afterwards found. These facts prove this a point of rendezvous for these parties. They show Brown Street to have been the place for consultation and observation; and to this purpose it was well suited.

Mr. Burns's testimony is also important. What was the defendant's object in his private conversation with Burns? He knew that Burns was out that night; that he lived near Brown Street, and that he had probably seen him; and he wished him to say nothing. He said to Burns, "If you saw any of your friends out that night, say nothing about it; my brother Joe and I are your friends." This is plain proof that he wished to say to him, if you saw me in Brown Street that night, say nothing about it.

But it is said that Burns ought not to be believed, because he mistook the color of the dagger, and because he has varied in his description of it. These are slight circumstances, if his general character be good. To my mind they are of no importance. It is for you to make what deduction you may think proper, on this account, from the weight of his evidence. His conversation with Burns, if Burns is believed, shows two things; first, that he desired Burns not to mention it, if he had seen him on the night of the murder; second, that he wished to fix the charge of murder on Mr. Stephen White. Both of these prove his own guilt.

I think you will be of opinion, that Brown Street was a probable place for the conspirators to assemble, and for an aid to be stationed. If we knew their whole plan, and if we were skilled to judge in such a case, then we could perhaps determine on this point better. But it is a retired place, and still commands a full view of the house; a lonely place, but still a place of observation. Not so lonely that a person would excite suspicion to be seen walking there in an ordinary manner; not so public as to be noticed by many. It is near enough to the scene of action in point of law. It was their point of centrality. The club was found near the spot, in a place provided for it, in a place that had been previously hunted out, in a concerted place of concealment. Here was their point of rendezvous. Here might the lights be seen. Here might an aid be secreted. Here was he within call. Here might he be aroused by the sound of the whistle. Here might he carry the weapon. Here might he receive the murderer after the murder.

Then, Gentlemen, the general question occurs, Is it satisfactorily proved, by all these facts and circumstances, that the defendant was in and about Brown Street on the night of the murder? Considering that the murder was effected by a conspiracy; considering that he was one of the four conspirators; considering that two of the conspirators have accounted for themselves on the night of the murder, and were not in Brown Street; considering that the prisoner does not account for himself, nor show where he was; considering that Richard Crowninshield, the other conspirator and the perpetrator, is not accounted for, nor shown to be elsewhere; considering that it is now past all doubt that two persons were seen lurking in and about Brown Street at different times, avoiding observation, and exciting so much suspicion that the neighbors actually watched them; considering that, if these persons thus lurking in Brown Street at that hour were not the murderers, it remains to this day wholly unknown who they were or what their business was; considering the testimony of Miss Jaqueth, and that the club was afterwards found near this place; considering, finally, that Webster and Southwick saw these persons, and then took one of them for the defendant, and that Southwick then told his wife so, and that Bray and Mirick examined them closely, and now swear to their belief that the prisoner was one of them;—it is for you to say, putting these considerations together, whether you believe the prisoner was actually in Brown Street at the time of the murder.

By the counsel for the prisoner, much stress has been laid upon the question, whether Brown Street was a place in which aid could be given, a place in which actual assistance could be rendered in this transaction. This must be mainly decided by their own opinion who selected the place; by what they thought at the time, according to their plan of operation.

If it was agreed that the prisoner should be there to assist, it is enough. If they thought the place proper for their purpose, according to their plan, it is sufficient. Suppose we could prove expressly that they agreed that Frank should be there, and he was there, and you should think it not a well-chosen place for aiding and abetting, must he be acquitted? No! It is not what I think or you think of the appropriateness of the place; it is what they thought at the time. If the prisoner was in Brown Street by appointment and agreement with the perpetrator, for the purpose of giving assistance if assistance should be needed, it may safely be presumed that the place was suited to such assistance as it was supposed by the parties might chance to become requisite.