This is an appeal by the plaintiff from an order determining heirship, made and entered on the 18th day of February 1952, in the district court of Powell County, Montana. Eli Stoian died on or about the 1st day of January 1949, leaving no will and leaving personal property in Montana valued in excess of $10,-000. The plaintiff and appellant, Dan D. Vonica, petitioned the court for letters of administration alleging himself to be the next of kin and heir at law of the deceased, and on the 17th day of January 1949, plaintiff and appellant was duly appointed administrator and qualified as such and since that date has been acting as such administrator. On the 13th day of January 1949, an order was made by the district judge appointing M. K. Daniels *54and Joseph A. McElwain to represent the unknown heirs of the decedent, and all heirs, legatees and devisees of the decedent who reside out of the State of Montana.
On August 29, 1949, the representatives of the foreign heirs filed a petition to determine heirship. A motion was made by the plaintiff to quash the petition, and it was noticed for hearing and at a later date an order denying the motion was made by the lower court. On the 11th day of January 1950, Dan D. Vonica, the appellant herein, made his appearance in the matter having to do with the petition to determine heirship, and on the 22nd day of May 1950, the default of all unknown and nonresident heirs was duly entered and filed. On the same day the appellant filed his complaint alleging that he was a second cousin of the decedent and as such was the sole heir and entitled to the whole of the property and estate of the decedent, praying that the court so determine. On the 29th day of May 1950, the attorneys for the unknown nonresident heirs filed an answer to appellant’s complaint alleging that the decedent was survived by certain individuals, namely brothers, nephews and nieces, who were residents and citizens of Rumania, and asked the court that an order or decree be entered adjudging, determining and decreeing that these persons in Rumania be heirs at law and next of kin of decedent. On the 5th day of June 1950, the appellant filed a reply to the answer of the attorneys for the unknown, nonresident heirs and in that reply, among other things, it was asked the so-called answer of the attorneys for the unknown, nonresident heirs be stricken.
The cause came on for hearing before the court on the 27th day of June 1950. The plaintiff and appellant herein took the stand on his own behalf and stated that he was a relative of the decedent and that the decedent had no other relatives other than himself in the United States that he knew of, whereupon the respondents put on proof to the effect that the decedent had known relatives in Rumania and that the relatives in Rumania were of closer kindred than the appellant, and by reason of this it is claimed that they are entitled to the estate and the proceeds *55therefrom. After both sides concluded their proof the following proceedings took place:
“Court: This matter will be submitted, subject to the briefs you gentlemen will file. In addition to the proof that has been offered here, the court should have proof from the Department of State as to the relationship between heirs of this country and heirs of this state, with rights in Rumania and reciprocal rights; and, I take it, that you contacted the Department and will furnish it to me.
“Mr. McElwain: We are in contact at the present time, and we received a letter last week, requesting the information, as to whether this was real or personal property, which may be determinative, and whether or not the deceased was an alien or citizen of the United States. We have furnished this information by airmail letter and would like to have it stipulated that the matter is then submitted.
“Mr. Anderson: Of course, if you are going to submit some proof along that line, we want to be heard on it. Of course that is a fact that they have to prove, so, then I suppose the proper order would be to give an order continuing it for further hearing.
‘ ‘ The Court: That, I think would be more advisable, because the court is going to have to have that proof. The court takes judicial notice of treaties and things of that kind.
“Mr. Anderson: Foreign law has to be proven in a certain established manner.
“The Court: If it is a foreign law; but, if it is a treaty arrangement, then why can’t the court take judicial notice?
‘ ‘ Mr. Anderson: It is a matter of foreign law that has to be proven.
“The Court: Before disposing of this matter, I am going to know, that, whether or not it is. That is a matter that won’t concern the points at issue, so far as these briefs are concerned, is it?
“Mr. Anderson: We can go ahead and prepare a brief, yes.
‘ ‘ The Court: I think so, and, then, when the time comes, that should be reasonably soon, we will have that other matter heard. ’ ’
*56After the proceedings above quoted, and on June 26, 1950, the court then made an order that the hearing be continued until foreign proof could be submitted. Thereafter, and on the 18th day of February 1952, and without the benefit of further proceedings the court made its order determining heirship, which order determined that the appellant is not an heir at law of the decedent and determining that the heirs at law of the decedent are as follows, and as such are entitled to the distribution of decedent’s estate:
‘ ‘ Constantin Stoian, related as brother, and residing at Poiana Sibiului 1322, Roumania;
“Paul, also known as Pavel, Stoian, related as brother, and residing in the Republic of Roumania;
“Children surviving decedent’s sister, Maria Stoian Bodea, and who are related as nieces and nephews of decedent, and whose names and addresses were not definitely established at said hearing; and,
“Children surviving decedent’s brother, Dimitru Stoian, and who are related as nieces and nephews of decedent, and whose names and addresses were not definitely established at said hearing.
“That the father and mother of the said Eli Stoian, also known as Elie Stoian, died prior to his death; that the Administrator of said estate, and the Plaintiff in the action to determine heir-ship in the matter of said estate, Dan D. Yonica, is related as second cousin to decedent, as such is not within a degree of relationship that entitles him to inherit as an heir of the said Eli Stoian, also known as Elie Stoian, deceased; that if the sons and daughters of the decedent’s sister, Maria Stoian Bodea, and the decedent’s brother, Dimitru Stoian, are not satisfactorily identified and proven to be the nieces and nephews of the decedent, Eli Stoian, also known as Elie Stoian, prior to the time that the administrator of said estate petitions for the distribution of said estate, it is determined that the heirs-at-law of the decedent, entitled to the distribution of the assets of said estate, are the *57aforementioned Constantin Stoian and Paul, also known as Pavel, Stoian. ’ ’
It is from this order that the appellant has appealed.
The appellant has advanced one specification of error which is as follows: 1 ‘ The court erred in making its order determining heirship, declaring the alien claimants the sole heirs at law.”
R. C. M. 1947, sec. 91-520, provides as follows: “No person shall receive money or property, save and except mining property, as provided in section 25, Article III, of the Constitution of the state of Montana, as an heir, devisee and/or legatee of a deceased person leaving an estate or portion thereof in the state of Montana, if such heir, devisee and/or legatee, at the time of the death of said deceased person, is not a citizen of the United States and is a resident of a foreign country at the time of the death of said intestate or testator, unless, reciprocally, the foreign country in question would permit the transfer to an heir, devisee and/or legatee residing in the United States, of property left by a deceased person in said foreign country. ’ ’
It is contended by respondents that the ability of a United States citizen to take property in Rumania has been determined in the case of In re Kennedy’s Estate (State v. American Trust Co.), 106 Cal. App. (2d) 621, 235 Pac. (2d) 837, 841. It is further contended that the requirements of R. C. M. 1947, sec. 91-520, above quoted, are met when at the date of the death of the decedent the foreign country permitted the transfer to an heir residing in the United States of property left in the foreign country (contending the Kennedy case as exclusive proof of this point). It is contended that the Kennedy case is one of which the Montana court must take judicial notice.
In an examination of the Kennedy case it is plain to see that the facts therein were very similar to the facts as are involved here. The court held that there was reciprocity with Rumania at approximately the time when the death of decedent in the instant case occurred. There is nothing in the record to suggest that the Kennedy case was brought to the attention of the court below. However, it is reasonable to assume that the district court *58was familiar with it and that as a result of the findings in the Kennedy case the court of its own motion took judicial knowledge of matters therein contained and made its finding in the instant case accordingly.
In the Kennedy case there was some discussion to the effect that the Rumanian laws as they then existed were not being observed and obeyed. However, the court said that the Rumanian laws in evidence were not ambiguous and in the absence of controverting evidence the presumption supplies the fact that the said laws were being obeyed and observed.
The court said in that case: “Accordingly, the presumption of continuity applies to the evidence in this case. That presumption was not controverted by evidence offered by either party. The trier of the facts was ‘bound to find according to the presumption’ Code Civ. Proc., sec. 1961. Even if appellant had introduced some controverting evidence, the presumption would have remained in the case, for consideration and weighing by the trier of the facts. ’ ’
R. C. M. 1947, sec. 93-501-2, provides as follows: “Every court of this state shall take judicial notice of the common law and statutes of every state, territory and other jurisdiction of the United States. ’ ’
If we are to assume, for the purposes of discussion, that the findings in connection with the laws of Rumania, as were set forth in the Kennedy case, supra, were in fact the common law of that state, and if we were to further assume that the district judge had before him the citation of that case before he made his ruling in the instant case, nonetheless the rule is that before a litigant may invoke the benefits of such foreign law, he must give notice to the adverse party of his intention to do so before offering proof of such foreign law or before asking the court to take judicial notice thereof. R. C. M. 1947, sec. 93-501-5; 31 C. J. S., Evidence, sec. 18, page 534. There is nothing in the record to suggest that any notice was given to the appellant, and under the circumstances it is altogether possible that the appellant may have been able to offer some proof contrary to *59tbe contention of tbe respondents and contrary to tbe lindings in the Kennedy case, and as a result the findings of the lower court in the instant case may have been decidedly different from those which we have before us. The ruling in the Kennedy case was based upon a determination of fact by the trier of facts and we hold that the district judge in the instant case should make his own determination of fact and not use some other court in a sister state to do that chore for him.
The determination of heirship by the lower court was premature and thus was error, and therefore we are not called upon to answer the arguments and discussions presented in the briefs regarding that finding. The ruling of the district court is reversed and it is directed that the lower court make its own determinaiton in connection with whether or not the country of Rumania has reciprocity with the United States in connection with inheritance, after due notice is given to the interested litigants that a case decided in a sister state is to be used in connection with its findings and an opportunity afforded all litigants interested to be heard upon the question. And it is further directed that said district court make a determination as to whether or not such foreign country places restrictions upon the movement of money or property out of such foreign country and if so, make its order according to the directions found in R. C. M. 1947, sec. 91-520, subdivision 3.
MR. JUSTICES FREEBOURN and ANGSTMAN concur.