I shall now proceed on the supposition, that it is proved that there was a conspiracy to murder Mr. White, and that the prisoner was party to it.

The second and the material inquiry is, Was the prisoner present at the murder, aiding and abetting therein?

This leads to the legal question in the case. What does the law mean, when it says, that, in order to charge him as a principal, "he must be present aiding and abetting in the murder"?

In the language of the late Chief Justice, "It is not required that the abettor shall be actually upon the spot when the murder is committed, or even in sight of the more immediate perpetrator of the victim, to make him a principal. If he be at a distance, co-operating in the act, by watching to prevent relief, or to give an alarm, or to assist his confederate in escape, having knowledge of the purpose and object of the assassin, this in the eye of the law is being present, aiding and abetting, so as to make him a principal in the murder."

"If he be at a distance co-operating." This is not a distance to be measured by feet or rods; if the intent to lend aid combine with a knowledge that the murder is to be committed, and the person so intending be so situate that he can by any possibility lend this aid in any manner, then he is present in legal contemplation. He need not lend any actual aid; to be ready to assist is assisting.

There are two sorts of murder; the distinction between them it is of essential importance to bear in mind: 1. Murder in an affray, or upon sudden and unexpected provocation. 2. Murder secretly, with a deliberate, predetermined intention to commit the crime. Under the first class, the question usually is, whether the offence be murder or manslaughter, in the person who commits the deed. Under the second class, it is often a question whether others than he who actually did the deed were present, aiding and assisting therein. Offences of this kind ordinarily happen when there is nobody present except those who go on the same design. If a riot should happen in the court-house, and one should kill another, this may be murder, or it may not, according to the intention with which it was done; which is always matter of fact, to be collected from the circumstances at the time. But in secret murders, premeditated and determined on, there can be no doubt of the murderous intention; there can be no doubt, if a person be present, knowing a murder is to be done, of his concurring in the act. His being there is a proof of his intent to aid and abet; else, why is he there?

It has been contended, that proof must be given that the person accused did actually afford aid, did lend a hand in the murder itself; and without this proof, although he may be near by, he may be presumed to be there for an innocent purpose; he may have crept silently there to hear the news, or from mere curiosity to see what was going on.[2] Preposterous, absurd! Such an idea shocks all common sense. A man is found to be a conspirator to commit a murder; he has planned it; he has assisted in arranging the time, the place and the means; and he is found in the place, and at the time, and yet it is suggested that he might have been there, not for co-operation and concurrence, but from curiosity! Such an argument deserves no answer. It would be difficult to give it one, in decorous terms. Is it not to be taken for granted, that a man seeks to accomplish his own purposes? When he has planned a murder, and is present at its execution, is he there to forward or to thwart his own design? is he there to assist, or there to prevent? But "Curiosity"! He may be there from mere "curiosity"! Curiosity to witness the success of the execution of his own plan of murder! The very walls of a court-house ought not to stand, the ploughshare should run through the ground it stands on, where such an argument could find toleration.[3]

It is not necessary that the abettor should actually lend a hand, that he should take a part in the act itself; if he be present ready to assist, that is assisting. Some of the doctrines advanced would acquit the defendant, though he had gone to the bedchamber of the deceased, though he had been standing by when the assassin gave the blow. This is the argument we have heard to-day.

The court here said, they did not so understand the argument of the counsel for defendant. Mr. Dexter said, "The intent and power alone must co-operate."

No doubt the law is, that being ready to assist is assisting, if the party has the power to assist, in case of need. It is so stated by Foster, who is a high authority. "If A happeneth to be present at a murder, for instance, and taketh no part in it, nor endeavoreth to prevent it, nor apprehendeth the murderer, nor levyeth hue and cry after him, this strange behavior of his, though highly criminal, will not of itself render him either principal or accessory." "But if a fact amounting to murder should be committed in prosecution of some unlawful purpose, though it were but a bare trespass, to which A in the case last stated had consented, and he had gone in order to give assistance, if need were, for carrying it into execution, this would have amounted to murder in him, and in every person present and joining with him." "If the fact was committed in prosecution of the original purpose which was unlawful, the whole party will be involved in the guilt of him who gave the blow. For in combinations of this kind, the mortal stroke, though given by one of the party, is considered in the eye of the law, and of sound reason too, as given by every individual present and abetting. The person actually giving the stroke is no more than the hand or instrument by which the others strike." The author, in speaking of being present, means actual presence; not actual in opposition to constructive, for the law knows no such distinction. There is but one presence, and this is the situation from which aid, or supposed aid, may be rendered. The law does not say where the person is to go, or how near he is to go, but that he must be where he may give assistance, or where the perpetrator may believe that he may be assisted by him. Suppose that he is acquainted with the design of the murderer, and has a knowledge of the time when it is to be carried into effect, and goes out with a view to render assistance, if need be; why, then, even though the murderer does not know of this, the person so going out will be an abettor in the murder.