This is habeas corpus and ancillary certiorari to inquire into the cause of plaintiff’s detention in the Lapeer State home and training school. He was committed there, while a minor, as a feeble-minded person, by order of the probate court, pursuant to the provisions of PA 1923, No 151, §§ 10, 11, as amended by PA 1947, No 106 (CL 1948, §§ 330.20, *486330.21 [Stat Ann 1947 Cnm Snpp §§ 14.810,14.811]). Plaintiff claims the proceedings in that court defective. They must be in strict conformity with statutory requirements. In re Myrtle Davis, 277 Mich 88; Freedman v. Freedman, 303 Mich 647; In re Payette, 315 Mich 700. The necessity for strict-compliance with the statute was in nowise diminished by the fact that the proceedings were brought while plaintiff stood committed to the State hospital at Ionia as an insane person under the provisions of CL 1948, § 767.27 (Stat Ann 1949 Cum Supp § 28.967) in a certain criminal cause then pending and thereafter nolle prossed, nor by the fact that said proceedings were brought solely for the purpose of transferring plaintiff from the one institution to the other.
Plaintiff complains first of the insufficiency of the petition for his admission to Lapeer. Section 11 of the statute provides in part that such petition shall “contain a statement giving the facts and not the conclusions upon which the allegation of such mental disease is based.” The petition in the case at bar represented that the facts upon which the allegation of feeble-mindedness was based were as follows: “Simple, childish, immature, cannot read or write, I.Q. of 41, behavior typical of an imbecile.” The averment of inability to read or write and of an I.Q. of 41 does not afford a sufficient factual basis for the conclusion of feeble-mindedness, as such facts may not necessarily be inconsistent with the existence of an untrained but, nevertheless, sound mind. The remainder of the statement consists of conclusions and opinions without the facts upon which they are based.. Such petition, fatally defective, could not servé to confer jurisdiction on the probate court and its subsequent order was, therefore, a nullity. In re O’Neil, 239 Mich 450; In re Joseph Nowack, 274 Mich 544.
*487Complaint is also made of the certificates of the 2 physicians for failure to state the. grounds upon which their opinions of feehle-üiindedness were' based. We think this objection also well taken. Under section 10 of the statute, as then in effect, such certificates were required to “contain the facts and circumstances upon which the opinion of .the physician is based.” This requirement is jurisdictional. Freedman v. Freedman, supra. In the instant case one of the certificates represented those facts and circumstances to have been as follows:
“Evidently has only the intelligence of a very low-grade imbecile, with no power of judgment or reasoning. He cannot name the days of the week, nor months of the year. Cannot add 2 and 3, though he' has learned to count. He could not be held responsible for his acts, since he has no conception of right, and wrong.”
The other represented them as follows:
“This young man is 20,years of age and has a mental I.Q. of 40. He cannot read or write. He was-, arrested for gross indecency and committed to prison and then transferred to the Ionia State hospital. This man is definitely feeble-minded and should be transferred to the Lapeer State home and training-school.”
So much of the above as constitutes statements of facts and circumstances suffers from .the same infirmity hereinbefore noted concerning the like statements contained in the petition. The remainder, as in the case of the petition, amounts to nothing more than statements of the opinions and’ conclusions of the physicians. It should be said here that the requirements of the statute that the specified statements-of the petition and certificates shall set forth -facts,, not mere conclusions, are mandatory not only when made by ordinary laymen but as well when made by *488physicians, despite the fact that the latter may well qualify as expert witnesses for the giving of opinion, evidence for certain purposes. Such opinions do not satisfy the statutory requirements in this connec-' tion. It is the prohate judge, not the physicians, who must make the determination of feeble-mindedness; it must be predicated upon a showing of facts, not merely upon the opinions of others, whether laymen or physicians.
Plaintiff also urges that the probate judge erred in failing to appoint a guardian ad litem for him in the, proceedings. "When, as here, personal service of the notice of hearing is had upon the person alleged to be feeble-minded, the statute permits but does not require such appointment. Plaintiff contends that even though such appointment be not mandatory but permissive only, the failure to make it amounted, under the facts of this case, to an abuse of discretion. The consideration of this claim involves the review of the probate judge’s determination of those very facts and requires our decision of a question of judicial discretion, which is not the office of habeas corpus. See In re McKinney, 326 Mich 190.
The law then in effect did not require a stenographic record to be taken of the testimony and proceedings before the probate court. We are not in accord with plaintiff’s position that failure to take it rendered the order of the probate court a nullity. The probate judge has filed a return, certifying to the substance of the testimony adduced and the proceedings had before him, which proved sufficient in those respects for a determination of the issues in this case. In passing, it may be said that on each of those issues the excellent brief of the solicitor general was of inestimable value and assistance to the Court.
*489An order may enter discharging plaintiff without prejudice to such further proceedings ás may he deemed necessary..
Carr, Btjshnell, and Sharpe, JJ., concurred with 'Dethmers, J. Reid, C. J., concurred in the result.