ISTo objection seems to have been raised to the regularity of the proceedings resulting in the order appealed from. The procedure resorted to is unknown to the practice. It was not a motion in the habeas corpus matter to review the action of the commissioner in assuming jurisdiction. It was not an application in form for a writ of •certiorari or any other writ, nor was it an action or special proceeding authorized by statute. Counsel for appellant suggest that it was an application to the equity power of the nourt, yet it was not made by action or in any manner known to the Code or the practice thereunder. Counsel further suggest that it was an application for the exercise of the supervisory control exercisable by circuit courts over inferior tribunals, yet no appropriate writ was sought for or seems to -have been contemplated by which the power of superintending control can only be regularly exercised. State ex rel. Milwaukee Med. Coll. v. Chittenden, 127 Wis. 468, 107 N. W. 500. As said in that ease, in harmony with previous •adjudications, unlike the grant of power of superintending •control granted to this court independently of any special provision for instrumentalities essential to its exercise (sec. 3, art. VII, Const-.), the power of supervisory or general control was conferred upon the circuit courts with express authority to use appropriate common-law appurtenances for the exer•cise of it. This court was given the power to issue such writs of jurisdiction and independently of its separate jurisdiction of superintending control, power to issue appropriate writs in the exercise of such control being given by implica*4tion, while the specific grant to circuit courts of the use of the writs was solely in aid of jurisdiction. Att’y Gen. v. Railroad Cos. 35 Wis. 425, 521.
The circuit court might well have dismissed the proceedings as jurisdictionally irregular. Perhaps it ought to have done so. Where a court possesses jurisdiction of the subject matter but ought not to exercise it in the way invoked it should be deemed to be without jurisdiction. Where it ought, regardless of the attitude of parties, to decline to act, it should be deemed, regardless of such attitude, not to have jurisdiction to act (Harrigan v. Gilchrist, 121 Wis. 127, 229, 99 N. W. 909) ; and where the jurisdiction of the court is invoked in a matter within its power but in a manner entirely unknown to the law, written or unwritten, ordinarily, at least, it should refuse to open its doors, and if it does not this court should treat the result as jurisdictionally defective whether objection be or be not made by any party to the litigation. Harrigan v. Gilchrist, 121 Wis. 127, 229, 99 N. W. 909; Burnham v. Norton, 100 Wis. 8, 75 N. W. 304.
Notwithstanding what has been said, since the trial court had jurisdiction of the subject of whether the court commissioner should be prohibited for jurisdictional reasons from entertaining the habeas corpus matter, it may be that in the particular instance the proceeding before such court may safely be treated as an application for an appropriate writ and a denial thereof because no sufficient grounds for its issuance were shown. In m> other way can a dismissal of the appeal be avoided and a decision on the merits be reached. This court set a precedent in that line, not to be regarded as safe to rely on other than in exceptional cases, in treating a complaint filed in this court, erroneously invoking its original equity jurisdiction, as an application for a writ of mandamus, it appearing that grounds for such a writ existed, and that its immediate issuance was advisable to prevent a miscarriage of justice. State ex rel. Binder v. Goff, 129 Wis. 668, 109 *5N. W. 628. We have concluded that, notwithstanding the rather inexcusable irregularity in the practice adopted, that power exists and justice will be best subserved by treating the matter as suggested, though it should not be considered as giving sanction to the practice so that the instance will form a precedent to be followed.
To the end that, notwithstanding the treatment of this case, the proper course of procedure may not be jurisdictionally departed from, we state here that, in the opinion of the court, these are the proper rules to be observed: In case of an application to test the act of a court commissioner upon jurisdictional grounds, a writ of certiorari, as an independent proceeding, or a motion in the proceeding challenged for review, is proper. In re Hammer, 113 Wis. 96, 89 N. W. 111; Longstaff v. State, 120 Wis. 346, 97 N. W. 900. In
case of a proceeding to prevent a court commissioner from hearing any particular matter for want of jurisdiction, a writ of prohibition or other appropriate common-law writ, if any other there be to meet the case, is proper. In case of any proceeding in the circuit court under its power of superintending control, some one of the appropriate writs according to the practice at common law for the exercise of such control should be used and should be regularly obtained. State ex rel. Milwaukee Med. Coll. v. Chiltenden, 127 Wis. 468, 107 N. W. 500. To review the action of a court commissioner for mere judicial error, an ordinary motion in the proceeding in the circuit court for that purpose is the proper method of invoking the superior judicial authority. In re Hammer, supra; State ex rel. Caster v. Whitcher, 117 Wis. 668, 94 N. W. 787; Longstaff v. State, supra. In case of an appeal to the general equity power of the circuit court to prevent or redress a wrong, or for other relief, the method of approach should be by action in the absence of any special statutory authorization.
The sole question determined by the court below was as to *6whether a circuit court commissioner has jurisdiction to allow a writ of habeas corpus and to hear and determine'the matter involved. It seems to be rather late to question such jurisdiction, since it has been exercised without successful challenge for over half a century. The instances where such exercise has been directly or impliedly sanctioned by this court are very numerous. Significant among the more recent of such instances are In re Crow, 60 Wis. 349, 19 N. W. 713 ; State ex rel. Gaster v. Whitcher, 117 Wis. 668, 94 N. W. 787; Longstaff v. State, 120 Wis. 346, 97 N. W. 900. In the first case cited, as suggested- by respondent’s counsel, this court refused to follow rulings in the state of Michigan denying to court commissioners jurisdiction to hear a habeas corpus matter.
The question as now presented is decisively ruled in favor of respondent by the last case above cited. It was there held that under the constitutional provision that such judicial powers as are prescribed by law, not exceeding the power of a judge at chambers, may be exercised by court commissioners, see. 23, art. VII, and the statutory provision that a “judge or commissioner may exercise within his county the powers and shall be subject to the restrictions thereon of a circuit judge at chambers, according to the existing practice . . . in all actions or proceedings in courts of record,” sec. 2815, Stats. (1898), there can be no question but that a court commissioner has jurisdiction upon habeas corpus to hear and determine the questions that may be appropriately presented for adjudication. It was there assumed, as will be seen, that a circuit judge at chambers may hear and determine a habeas corpus matter, including the determination of all questions necessary to be solved in reaching a proper final result.
Oounsel for appellant are wrong in contending that it was held in Wisconsin Ind. School v. Clark Co. 103 Wis. 651, 662, 79 N. W. 422, that a circuit judge at chambers cannot *7bear a matter involving tbe determination of a disputed question of fact. It was there in effect decided that such a judge, especially by legislative authority, may exercise any judicial power not requiring the trial of an action. The term “action” was plainly used in the sense of a Code proceeding’ com-mencihle only by summons, not one of those extraordinary remedies commencible by a writ, which is classed with actions as distinguished from special proceedings.
General power is given to judges to allow writs at chambers returnable in the proper counties. Sec. 2420, Stats. (1898). Court commissioners have generally the powers of a circuit judge at chambers. Sec. 2815, Stats. (1898). They are authorized, specially, to grant writs of habeas corpus. Sec. 3409, Stats. (1898). The practice outlined in the Code contemplates a hearing in the habeas corpus proceeding before the court, or before the officer granting the writ. Oh. 147, Stats. (1898).
It is said in a standard work on Pleading and Practice (4 Ency. PL & Pr. 360) that constitutional and statutory power generally exists to hear and determine writs of habeas corpus at chambers, citing authorities from many states, including Wisconsin (In re Booth, 3 Wis. 1; In re Blair, 4 Wis. 522; Bagnall v. Ableman, 4 Wis. 163), and that a judge at chambers in many jurisdictions has such power where the questions to be solved relate to the custody of minor children, citing many cases, including Goodchild v. Foster, 51 Mich. 599, 17 N. W. 74, which seems to be in direct conflict with the earlier decision in that state, relied upon by the learned counsel for appellant and repudiated in In re Grow, 60 Wis. 349, 19 N. W. 713. The ground of the earlier Michigan decisions was that 'the constitution conferred all power to judicially determine controversies on courts and, therefore, the legislature was powerless to confer the power to hear and determine a controversy in a habeas corpus action on a judge at cham*8bers or a court commissioner. Tbis court very early announced a different doctrine in these words:
“The constitution of this state confers the power to issue, hear, and determine this writ, upon the supreme and circuit courts. But the legislature, though it cannot inhibit or restrict those courts in the exercise of this power, may confer the power upon other judicial courts or officers, under such limitations and restrictions as it may deem proper. Accordingly the legislature has . . . made provision for the issuing, hearing, .and determining of the' writ, by any judge of the supreme, circuit, or county court, in vacation, and has prescribed the mode of procedure in such cases.” [Bagnall v. Ableman, 4 Wis. 163, 167.]
It follows that the commissioner in this case undoubtedly had authority to determine the habeas corpus proceeding. Just what questions it was competent for him to decide in reaching such determination is really not necessary to now specify, though no reason is perceived how, under the statute, they are limited- in case of a commissioner, specially. If such an officer makes a wrong decision the way is' open for a review, firstly, before the circuit court, and secondly, before this court.
We have not endeavored to discuss the main question of law raised on the appeal at any great length. When the law in respect to a particular matter has been by recognition and express declaration long established, it should not be regarded as open to question, calling for, or perhaps warranting, an exhaustive discussion in an exposition thereof. We might well dispose of this case by merely stating the question involved and holding,, as the fact is, that it is ruled in respondent’s favor by Longstaff v. State, 120 Wis. 346, 97 N. W. 900.
By the Court. — The order is affirmed.