
39 U.S. 60 (1840)
14 Pet. 60
THE COMMERCIAL AND RAIL ROAD BANK OF VICKSBURG, PLAINTIFF IN ERROR,
vs.
SLOCOMB, RICHARDS AND COMPANY, DEFENDANTS IN ERROR.
Supreme Court of United States.

*61 Mr. Sergeant for the plaintiffs in error.
Mr. Henderson, for the defendants.
*63 Mr. Justice BARBOUR delivered the opinion of the Court.
This is a writ of error to the Circuit Court of the United States, for the Southern District of Mississippi. It was an action on the case in assumpsit, brought by the defendants in error, citizens of Louisiana, against the plaintiffs in error.
The defendants in the Court below appeared by attorney, and pleaded to the jurisdiction of the Court; averring in their plea that they were a corporation aggregate, and that their corporators, stockholders, or company, were composed of citizens of other and different states; to wit, that William M. Lambeth and William E. Thompson, citizens of Louisiana, were, at the time that the suit was instituted, and at the time of filing the plea, stockholders and corporators therein.
The plaintiffs in the Court below demurred to this plea, assigning specially several causes of demurrer, as follows: 1. That the plea was not properly entitled of any term of the Court. 2. That the affidavit in support of the plea was not sufficient, nor was it properly attested. 3. That the matters set forth in the plea were not sufficient to abate the plaintiffs' suit.
The Court sustained the demurrer, and gave judgment against the defendants, for three thousand five hundred and seventy-five dollars and fifty-four cents, in damages; being the amount of the principal and interest of a certificate of deposite, on which the suit was brought, and for the costs. To reverse this judgment, this writ of error is brought.
In examining the correctness of the judgment of the Court upon the demurrer, we throw out of consideration the two first causes assigned; because if there were any irregularity in the particulars stated, they could at most only be urged as objections to the receiving of the plea: but could not be relied upon as grounds of demurrer; the office of which is, to put in issue the legal effect of a plea, after it has been received.
The third cause assigned, which was, that the plea was not sufficient *64 to abate the plaintiffs' suits, raises the only question to be decided; and that is, whether, upon the state of the parties, as appearing upon the record, the Court had jurisdiction of the case.
It will be observed, that the plaintiffs were citizens of Louisiana; so averred to be in the declaration; and two of the members of the corporation sued were also citizens of Louisiana. They are so averred to be in the plea, and the demurrer admits the truth of this averment. The eleventh section of the Judiciary Act of 1789, gives to the Circuit Courts of the United States jurisdiction in cases where "the suit is between a citizen of the state where the suit is brought, and a citizen of another state."
This Court were called upon, at an early period, to construe this section of the Judiciary Act, in relation to the very question raised by the pleadings in this case.
In the case of Strawbridge and others vs. Curtis and others, 3 Cranch, 267, they decided that where there are two or more joint plaintiffs, and two or more joint defendants, each of the plaintiffs must be capable of suing each of the defendants in the Courts of the United States, in order to support the jurisdiction. And what is more particularly applicable to this case, in the case of The Bank of the United States vs. Deveaux and others, 5 Cranch, 61, this Court decided, that a corporation aggregate, composed of citizens of one state, might sue a citizen of another state in the Circuit Courts of the United States; that is, they in effect decided, that although the artificial being, a corporation aggregate, was not a citizen, as such, and therefore could not sue in the Courts of the United States, as such, yet the Court would look beyond the mere corporate character, to the individuals of whom it was composed; and if they were citizens of a different state from the party sued, they were competent to sue in the Courts of the United States. But still, upon the principle of Strawbridge vs. Curtis, all the corporators must be citizens of a different state from the party sued. And the doctrine of both these cases has ever since been held to be the law of this Court. It is perfectly clear, that the same principle applies to the individuals composing a corporation aggregate, when standing in the attitude of defendants, which does when they are in that of plaintiffs.
The application of these doctrines to this case, would seem to be decisive of its fate; unless there is something in other points which were argued at the bar to obviate their force. For it has already been stated that the plaintiffs in the Court below were citizens of the state of Louisiana, and two of the members of the corporation sued were also citizens of Louisiana; so that some of the defendants being citizens of the same state with the plaintiffs, it follows, that although each of the plaintiffs was capable of suing, yet each of the defendants was not capable of being sued in the Circuit Court of Mississippi.
But it was contended at the bar, that whatever might have been the original ground of objection to the jurisdiction of the Court, the *65 defendants had appeared by attorney; and that such an appearance waived all objection to the jurisdiction of the Court. This is admitted to be a well established rule, in pleas of this sort; in Courts of general jurisdiction, where the plea is interposed by individual defendants. We deem it unnecessary, for the purposes of this case, to inquire what would be the effect of an appearance by attorney of an individual defendant, in pleading such a plea in the Circuit Courts of the United States, which are of limited jurisdiction. But we are clearly of opinion, that in the case of a corporation aggregate, no waiver of an objection to jurisdiction could be produced, by their appearing and pleading by attorney: because, as such a corporation cannot appear but by attorney; to say that such an appearance would amount to a waiver of the objection, would be to say, that the party must from necessity forfeit an acknowledged right, by using the only means which the law affords of asserting that right.
It was further contended, that all objection to the state of the parties in this case was obviated by the act of Congress, passed February 28th, 1839, entitled, "An act, in amendment of the acts respecting the judicial system of the United States."
The first section of that act provides, "That where in any suit at law, or in equity, commenced in any Court of the United States, there shall be several defendants, any one or more of whom shall not be inhabitants of, or found within the district where the suit is brought, or shall not voluntarily appear thereto, it shall be lawful for the Court to entertain jurisdiction, and proceed to the trial and adjudication of such suit between the parties who may be properly before it; but the judgment or decree rendered therein shall not conclude or prejudice other parties, not regularly served with process, or not voluntarily appearing to answer."
We consider the true construction of this act to be this: 
The eleventh section of the Judiciary Act, after having prescribed the jurisdiction of the Circuit Courts, as it regards the character of the parties, by way of personal exemption, declares, "That no civil suit shall be brought before either of said Courts against an inhabitant of the United States, by any original process, in any other district than that whereof he is an inhabitant, or in which he shall be found, at the time of serving the writ."
Under the operation of this clause many difficulties occurred in practice, in cases both in law and equity, in which, by the principles governing Courts both of law and equity, it was necessary to join several defendants, some of whom were, and others were not, inhabitants of the district in which the suit was brought.
The act of 1839 was intended to remove these difficulties; by providing, that the persons not being inhabitants, or not found within the district, may either not be joined at all with those who were, or if joined, and they did not waive their personal exemption, by a voluntary appearance, the Court may go on to judgment or decree against the parties properly before it, as if the others had not been joined.
*66 But it did not contemplate a change in the jurisdiction of the Courts, as it regards the character of the parties, as prescribed by the Judiciary Act, and as expounded by this Court; that is, that each of the plaintiffs must be capable of suing, and each of the defendants, capable of being sued: which is not the case in this suit; some of the defendants being citizens of the same state with the plaintiffs.
There is another reason why this act of 1839 cannot apply to this case. It expressly declares, that the judgment or decree shall not conclude or prejudice other parties not regularly served with process, or not voluntarily appearing to answer. Now the defendants in this case being a corporation aggregate, any judgment against them must be against them in their corporate character: and the judgment must be paid out of their corporate funds, in which is included the interest of the two Louisiana stockholders; and, consequently, such a judgment must of necessity prejudice those parties, in direct contravention of the language of the law.
We are of opinion that the judgment of the Circuit Court was erroneous, in sustaining the plaintiffs' demurrer to defendants' plea: it is therefore reversed; and the case is remanded to the Circuit Court, to be proceeded in according to law.
This cause came on to be heard on the transcript of the record from the Circuit Court of the United States for the Southern District of Mississippi, and was argued by counsel. On consideration whereof, it is now here ordered and adjudged by this Court, that the judgment of the said Circuit Court in this cause be, and the same is hereby, reversed, with costs; and that this cause be, and the same is hereby, remanded to the said Circuit Court, with directions to proceed therein according to law and justice, in conformity to the opinion of this Court.
