in English Law, a celebrated writ, deriving its name, like other writs, from the formal words contained in it. This writ is used for various purposes; but the chief of these, being that which is always understood by Habeas Corpus without further explanation, is the release or bailing of a person who considers himself illegally imprisoned, or entitled to be discharged upon bail.

Of the various other kinds made use of by the courts at Westminster, for removing prisoners from one court into another for the more easy administration of justice,—1st, The habeas corpus ad respondendum is issued when a man has a cause of action against one who is confined by the process of some inferior court, in order to remove the prisoner, and charge him with this new action in the court above; 2d, The habeas corpus ad satisfaciendum issues when a prisoner has had judgment against him in an action, and the plaintiff is desirous to bring him up to some superior court to charge him with the process of execution; 3d, The similar writs ad proseguendum, testificandum, deliberandum, &c., issue when it is necessary to remove a prisoner, in order to prosecute or bear testimony in any court, or to be tried in the proper jurisdiction in which the fact was committed; 4th, The common writ ad faciendum et recipiendum, issues out of any of the courts of Westminster Hall, when a person is sued in some inferior jurisdiction, and is desirous to remove the action into the superior court; commanding the inferior judges to produce the body of the defendant, together with the day and cause of his caption and detainer (whence the writ is frequently denominated a habeas corpus cum causa), to do and receive whatsoever the court shall consider in that behalf. But the great and efficacious writ, in all manner of illegal confinement, is that of habeas corpus ad subjiciendum, directed to the person detaining another, and commanding him to produce the body of the prisoner, with a specification of the day and cause of his caption and detention, ad faciendum, subjiciendum, et recipiendum, to do, submit to, and receive whatsoever the judge or court awarding such writ shall consider in that behalf. This is a high prerogative writ, and, therefore, by the common law, issues out of the Court of Queen's Bench, not only in term-time, but also during the vacation, by a fiat from the Chief-justice, or any other of the judges, and runs into all parts of the Queen's dominions except Scotland; for the sovereign is at all times entitled to have an account why the liberty of any subject is restrained, wherever that restraint may be inflicted. If it issues in vacation, it is usually returnable before the judge himself who awarded it, and he proceeds by himself thereon; unless the term should intervene, and then it may be returned in court. Indeed, if the party were privileged in the Courts of Common Pleas and Exchequer, as being an officer or suitor of the court, a habeas corpus ad subjiciendum might also have been awarded from thence; and if the cause of imprisonment were palpably illegal, they might have discharged him. But if he were committed for any criminal matter, they could only have remanded him, or taken bail for his appearance in the Court of King's Bench, which occasioned the Common Pleas to discountenance such applications. But since the mention of the King's Bench and Common Pleas as co-ordinate in this jurisdiction, by statute 16th Car. I., cap. 10, it has been held that every subject of the kingdom is equally entitled to the benefit of the common-law writ in either of those courts at his option. It has also been said, and by very respectable authorities, that the like habeas corpus may issue out of the Court of Chancery in vacation; but upon the famous application to Lord Nottingham by Jenks, notwithstanding the most diligent searches, no precedent could be found where the chancellor had issued such a writ in vacation, and therefore his lordship refused it.

In the Court of Queen's Bench it was, and still is, necessary to apply for it by motion to the court, as in the case of all other prerogative writs, such as certiorari, prohibition, mandamus, and the like, which do not issue as of mere course, without showing some probable cause why the extraordinary power of the crown is called in to the party's assistance. For, as it was argued by Lord Chief-Justice Vaughan, "it is granted on motion, because it cannot be had of course, and there is therefore no necessity to grant it; for the court ought to be satisfied that the party has a probable cause to be delivered." And this seems the more reasonable, because, when once granted, the person to whom it is directed can return no satisfactory excuse for not bringing up the body of the prisoner. So that, if it issued of mere course, without showing to the court or judge some reasonable ground for awarding it, a traitor or felon under sentence of death, a soldier or mariner in the service of the crown, a wife, a child, a relation, or a domestic, confined for insanity or other prudential reasons, might obtain a temporary enlargement by suing out a habeas corpus, though sure to be remanded as soon as brought up to the court. And therefore Sir Edward Coke, when Chief-justice, did not scruple (in 13 Jac. I.) to deny a habeas corpus to one confined by the Court of Admiralty for piracy, there appearing, upon his own showing, sufficient grounds to confine him. On the other hand, if a probable ground be shown that the party is imprisoned without just cause, and therefore has a right to be delivered, the right of habeas corpus is then a writ of right which "may not be denied, but ought to be granted to every man that is committed, or detained in prison, or otherwise restrained, though it be by the command of the king, the privy council, or any other."

HABEAS CORPUS ACT is the famous act of 31st Car. II., cap. 2, which is frequently considered as another magna charta of the kingdom. It enacts—1. That on complaint and request in writing by or on behalf of any person committed and charged with any crime (unless committed for treason or felony expressed in the warrant), or as accessory, or on suspicion of being accessory, before the fact, to any petit-treason or felony, plainly expressed in the warrant, or unless he is convicted or charged in execution by legal process, the Lord Chancellor, or any of the twelve judges in vaca- tion, upon viewing a copy of the warrant, or affidavit that a copy is denied, shall, unless the party has neglected for two terms to apply to any court for his enlargement, award a habeas corpus for such prisoner, returnable immediately before himself or any other of the judges; and, upon the return made, shall discharge the party, if bailable, upon giving security to appear and answer to the accusation in the proper court of judicature. 2. That such writs shall be endorsed, as granted in pursuance of this act, and signed by the person awarding them. 3. That the writ of habeas corpus shall be returned and the prisoner brought up, within a limited time according to the distance, not exceeding in any case twenty days. 4. That officers and keepers ne- glecting to make due returns, or not delivering to the pri- soner or his agent, within six hours after demand, a copy of the warrant of commitment, or shifting the custody of a pri- soner from one to another without sufficient reason or autho- rity (specified in the act), shall, for the first offence, forfeit L100, and for the second offence L200, to the party grieved, and be disabled to hold his office. 5. That no per- son, once delivered by habeas corpus, shall be re-committed for the same offence, on penalty of L500. 6. That every person committed for treason or felony shall, if he requires it the first week of the next term, or the first day of the next session of oyer and terminer, be indicted in that term or session, or else admitted to bail, unless the crown witnesses cannot be produced at that time; and if acquitted, or if not indicted and tried in the second term or session, he shall be discharged from his imprisonment for such imputed offence; but that no person, after the assizes shall be opened for the county in which he is detained, shall be removed by habeas corpus until after the assizes are ended, but shall be left to the justice of the judges of assize. 7. That any such prisoner may move for and obtain his habeas corpus as well out of the Chancery or Exchequer as out of the King's Bench or Common Pleas; and the Lord Chancellor or judges deny- ing the same, on sight of the warrant, shall, on oath that the same is refused, forfeit severally to the party grieved the sum of L500. 8. That the writ of habeas corpus shall run into the counties palatine, cinque ports, and other privileged places, and the islands of Jersey and Guernsey. 9. That no inhabi- tant of England, except persons contracting, or convicts praying to be transported, or having committed some capital offence in the place to which they are sent, shall be sent prisoners to Scotland, Ireland, Jersey, Guernsey, or any places beyond the seas, within or without the British do- minions, on pain that the party committing, his advisers, aiders, and assistants, shall forfeit to the party grieved a sum not less than L500, to be recovered with treble costs, shall be disabled from holding any office of trust or profit, shall incur the penalties of praemunire, and shall be incapable of the royal pardon.

This is the substance of that great and important statute, which extends only to the case of commitments for such criminal charges as can produce no inconvenience to public justice by a temporary enlargement of the prisoner; all other cases of unjust imprisonment being left to the habeas corpus at common law. But even upon writs at the common law it is expected by the court, agreeably to ancient prece- dents and the spirit of the act of parliament, that the writ should be immediately obeyed, without waiting for any alias or pluries; otherwise an attachment will issue. By these admirable regulations, judicial as well as parliamentary, the remedy is now complete for removing the injury of unjust and illegal confinement; a remedy the more necessary, be- cause the oppression does not always arise designedly, but sometimes from the mere inattention of government. For it frequently happens in foreign countries, and has happened in England during the temporary suspension of the statute, that persons apprehended upon suspicion have suffered a long imprisonment merely because they were forgotten.

In Scots Law, the form corresponding to the habeas cor- pus is called "Running Letters."