after stating the case as above, delivered the opinion of the court.

A motion is made to dismiss the writ upon the ground that the plaintiff in error attempts thereby to review a judgment which was rendered in its favor, and in which it acquiesced. The motion is based upon the fact that the judgment gives to the plaintiff in error the possession of the leased premises, subject to the lease, and damages-in the sum of $i, and that the judgment was entered upon the motion of the plaintiff in error. It is argued that a party who accepts the benefits of a judgment *526 is estopped from prosecuting a proceeding to review the same. It is true that such an estoppel applies to one who accepts the benefits of a judgment, but this is not such a case. The judgment was in favor of the plaintiff in error, it is true; but it does not award it all that it sued for, and it had the right, therefore, to sue out its writ of error. That right was in no way affected by the fact that the judgment was entered at its instance. The court had denied its motion for a new trial. The entry of the judgment was a mere matter of form. If it were true that the plaintiff in an action, by moving the court to put in proper form and in the shape of a judgment its conclusion already reached, must thereby lose his right to review the judgment, the defendant in the case might eventually deprive him of that right by refusing to move for the entry of a judgment. All the cases cited by the defendant in error in support of its motion are cases in which the plaintiff in error or the party appealing has in some way acquiesced in the judgment, or accepted the fruits thereof, or consented thereto. None of these features occur in the present case. The plaintiff in error has not acquiesced in the judgment. It has not taken possession thereunder, nor collected damages or costs thereunder, nor has it in any way consented thereto. The motion for the entry of a judgment when the jury had returned their verdict, and the court had already announced its conclusion upon the motion for a new trial, was no consent. Counsel-for the defendant in error, in this connection, and as ground for dismissing the writ, advert to the fact that the plaintiff in error has assigned no particulars in which the judgment is claimed to be erroneous. The answer to this is that error is not charged in the judgment itself or the entry thereof, but in the proceedings upon the trial upon which the verdict of a jury was reached. It is on account of those alleged errors that the judgment is sought to be reviewed.

It is contended that the court erred in admitting evidence to explain or define the meaning of the word “tailings,” as it was used in the written agreement. Upon the trial it was contended by the defendant in error that it had the right to deposit slag upon the leased premises, and that the term “tailings” included slag, such as was the molten refuse from its smelter. The court, in ruling upon the objection to this evidence, said, “If it can be proven here that if, by any technical meaning, slag is embraced in tailings, you can prove it.” Testimony was accordingly given by expert witnesses for the defendant in error tending to prove that the term “tailings” had a technical meaning, and, ‘as such, included the refuse product from any practical process after the extraction of the valuable components of the rock, and that the term was sufficiently comprehensive to include slag. The testimony so offered is criticised, and it is contended that it was not sufficiently explicit or positive to prove that the term “tailings” had such a technical meaning as was claimed for it by the defendant in error. With the weight of the evidence, however, we are not concerned. We think there was sufficient evidence in the record to justify the submission of the question to the jury. The court, under proper instruction, permitted the jury to determine whether or not the term “tailings” had the technical signification which the defendant in error imputed to it. The jury, upon this question, and under the instruction of the court, re *527 turned a special verdict, and found that the terra “tailings” had a scientific meaning, and that it included “slag.”

It is contended that the court erred in permitting the defendant in error to introduce evidence of, the negotiations and conversations between the parties to the written contract which preceded its execution. If there was no error in the admission of evidence tending to prove that the word “tailings,” as used in the contract, had a technical meaning such as to include slag, it follows that there was no error in admitting evidence to show that the parties to the contract, in adopting it, therein understood it in that technical sense.

Section 3137, Code Civ. Proc. Mont., provides:

Section 3136 provides that, for the proper construction of an instrument, “the circumstances under which it was made, including the situation of the subject of the instrument and of the parties to it, may also be shown.”

The testimony so admitted was to the effect that the lessee under the written contract made known to the lessor the fact that he intended to build a smelter, and that the premises in question were desired for dumping purposes, and that that matter was discussed and understood when the contract was made; that it was agreed that “tailings” was the broadest word that could be used, and that it would cover slag. It is suggested that there was error in admitting the evidence for the additional reason that the contract was made, not with the plaintiff in error, but with its predecessor in interest, and that the former stands in the attitude of an innocent purchaser, and is not chargeable with notice that the word “tailings,” in the contract, was used otherwise than in its ordinary sense, or that it was understood between the parties in a more narrow and technical sense. To this it may be said that it does not appear that the plaintiff in error is an innocent purchaser from the Butte & Boston Mining Company. But it is immaterial whether or not it was a purchaser in good faith for value, and without actual notice. It was bound to take notice of the practical construction that had been placed upon the agreement by the original parties thereto. At the time when it became the owner of the property, the premises in question were, and for several -years had been, used by the defendant in error as dumping ground for slag. According to the testimony, the evidence of that fact was plainly visible upon the ground. This was sufficient to put any purchaser upon notice to ascertain by what right the slag was so deposited, and whether the term “tailings” had been used in the contract in its ordinary meaning, or in the more technical sense in which the jury found that it was used. There is no denial in the testimony which appears in the record before us that the word was in fact used in that sense.

It is contended that the court erred in instructing the jury with reference to the burden of proof. The court, after instructing the jury *528 that the burden of proof was upon the plaintiff in error to prove every •material allegation of its complaint, said:

It is conceded that this instruction was correct as to all the issues in the case, except the issue raised in the answer by the plea of the statute of limitations. It is contended as to that issue the charge was erroneous, and that the court should have instructed the jury that the burden of proof as to that was upon the defendant in error. The ■exception of the plaintiff in error, however, was to the whole charge to the jury on the subject of the burden of proof. No notice was thereby given to the court of the nature of the objection which is now relied upon. If the attention, of the court had been specifically directed to the point of the objection, undoubtedly the instruction would have been corrected, and the jury would have been instructed as to the burden of proof upon that particular issue, if that was one of the material issues of the case. The plea of the statute of limitations which was set forth in the answer was that the defendant in error and its predecessor in interest had been in the open, continuous, and adverse possession of the premises, and had used the same for storing water and dumping débris thereon, since July, 1892, with the knowledge and •consent of the plaintiff in error and its grantors, and that thereby the causes of action had become barred by the laws of Montana. The issue so raised was found by the jury in favor of the plaintiff in error. Its title to the property was sustained by the court and jury. It cannot complain, therefore, that the charge of the court upon that point was erroneous. The court, moreover, in charging the jury, instructed them as to the statute of limitations applicable to actions to recover damages for waste or trespass on real property, and informed them that no recovery could be had except for débris deposited on the premises within two years prior to the commencement of the action. No exception was taken to the charge.

It is contended that the court erred in excluding the evidence of one Matthews, who was called as a witness for the plaintiff in error to testify as to the meaning of the word “tailings.” He did not claim to be an expert witness, nor was he offered as such, nor was it proposed to show by his testimony that the term “tailings” had or had not a technical meaning such as to include slag. The court ruled that he was not a qualified witness. We think the court ruled properly. There was no occasion to offer testimony to prove the ordinary meaning of the word “tailings.” That was not in dispute. The court, in ■charging the jury, instructed them that the word, in its ordinary meaning, did not include slag.

It is said that the court erred in refusing to instruct the jury as requested by the plaintiff in error, and in its instructions given to the jury as to the meaning of the word “tailings,” and in submitting its meaning as a question of fact to the iury. The court instructed the *529 fury, in substance, that the word “tailings,” in its ordinary use ancT meaning, did not include slag, but that the jury might determine whether the term “tailings” had a scientific meaning, and whether the parties so understood it in writing the contract. The merit of this contention has already been discussed. If the court was right, as we have found that it was, in admitting the evidence above adverted to, there was no error in giving or refusing instructions to the jury.

We find no error in the record. The judgment is affirmed.