In rare cases, jurisdiction over the subject-matter may be regarded as giving jurisdiction over the person, so far as may be necessary to uphold a judgment settling the possession or title to property. Such a proceeding is, either in form or substance, one not _in personam_ but _in rem_. The commonest instance is a suit in admiralty to enforce a maritime lien, such as that given by the universal law of the sea for seamen's wages. Wherever the vessel is found, this lien is recognized and will be enforced by seizing and selling her, but only after some kind of public notice has been given to all who have any pecuniary interest in her to appear and be heard. In such a suit, personal notice to her owners, served within the jurisdiction of the government to the courts of which the seamen may resort, is not indispensable. The presence of the ship within the power of the court is enough. While State courts have no admiralty jurisdiction, they can adjudicate upon a claim of title or right of possession to fixed property within the territorial limits of their State, although the parties adversely interested are not and have not been personally served with process there or anywhere. Here again their power over the property necessarily implies such power of control over those who might lay claim to it as will suffice to settle any dispute over its ownership or possession. But in all ordinary cases they are not only powerless to subject any one to obedience to their judgments who is not personally within the State in which they exist, but powerless so to subject one who is personally within it, but who did not belong there and was not there served with process in the original proceeding leading up to the judgment, unless he voluntarily took part in the proceeding.