Reed, J.

i. pbaoijccb point once reviewed. I. After verdict defendant moved the court to arrest judgment thereon on the grounds that no cause of action was stated in the petition, and that the damages sought to be recovered were remote and speculative. Reiore answering, it assailed the petition.by demurrer on the same grounds. On an appeal from the order of the circuit court sustaining the demurrer, this court held that a cause of action was stated -in *529the petition, and that its allegations afforded substantial grounds for the assessment of damages for the wrong complained of. See Raridan v. Central Iowa R'y Co., 65 Iowa, 640. Under a well-settled rule of practice, we will not review that ruling on this appeal. See Adams County v. Railway Co., 55 Iowa, 94; Minnesota Linseed Oil Co. v. Montague, 65 Id., 67.

2díótoñcJn-r" donee? CV1_ II. It is insisted that the verdict is not supported by the evidence. We are of the opinion, however, that this position cannot be sustained. There was evidence from which the j ury might have found that, owing to the failure of defendant to construct and maintain the cattle-guards, plaintiff was not able, during a portion of the time in question, to keep his cattle in the inclosures through which the railroad is constructed, and that, in consequence of this, he was not able to get the full benefit of the grass and cornstalks in said inclosures; and the amount awarded as damages does not appear to us to be excessive. It is probably true that a different result might have been reached by the jury from the evidence before them; but their finding is not so manifestly against the weight' of the evidence as to warrant us in interfering with it.

3. K-BGLitoífvértdamfiofappiicaWe' III. Plaintiff' testified that a portion of the grass which, he claims to have lost, if it had been cut at the proper time, would have made good hay, but that he omitted cut ^ because lie preferred to use it for late ^ll aT1<I winter pasture. Defendant offered to prove that, if the grass had been cut and made into hay, the hay would have been of greater value for winter feed than the grass was, and that it would have cost but a small amount to cut and convert it into hay. But the evidence offered to prove these facts was excluded, on plaintiff’s objection. The theory on which this evidence was offered to be introduced is that, as plaintiff was entitled to recover such damages only as could not have been prevented by reasonable care on his part, he ought not to be permitted to *530recover for the loss of the grass, if, by a trifling outlay, he could have prevented such loss. That one who has suffered damages in consequence of the failure of another to perform some act which he was under obligation to perform is not entitled to recover therefor, if, by the exercise of reasonable care or diligence, he might have prevented the injury, is certainly true. We are of the opinion, however, that, under the established facts, this rule is not applicable to this particular pliase of the case. The evidence shows that the grass could not have been cut and made into hay after the month of September. Indeed, we suppose that this is a fact within the knowledge of all men, and of which the courts would take judicial notice. Plaintiff at that time determined that he could not cut the grass, but would pasture it later in the season. He had the right to assume that the cattle-guards would be put in in proper time to enable him to so use it. The duty to construct and maintain them is imposed by statute, (Code, § 1288,) and plaintiff was not required to act on the assumption that that duty would not be performed. When defendant commenced to operate the road on the first of November, it assumed the performance of that duty, and was under obligation to perform it immediately, or, at least, within a reasonable time. Its wrong consists in the fact that it did not perform it. When it neglected to perform the duty in such time as to enable plaintiff to make the use of his property he had intended, lie was under obligation, of course, to use all reasonable diligence to prevent the injury. But, clearly, defendant is not to he exempted from liability for tlie injury caused by its negligence because plaintiff did not anticipate that it would refuse to perform the duty imposed upon it by law, or make provision in advance against the consequence of such refusal. The action of the circuit court in excluding the evidence is clearly right.

*531i. EVIDENCE : corn-stalkseompeteney. *530IY. Defendant introduced a witness who testified that he lived eight or nine miles from plaintiff’s place, and that *531lie knew the value of corn-stalks for winter pas-r ture neighborhood, at the time in ques-^ion. jj;e wag ^ien asJj;ecl to state what the value of such property was, but the court sustained an objection to the question. The ruling is correct. The fact that the witness knew the value of stalks in his neighborhood, from six to nine miles from plaintiff’s place, did not qualify him to testify to the value of stalks in plaintiff’s neighborhood.

5__. ej. mente iatote" wfflKirawn. V. Plaintiff filed an amendment to his petition, in which he alleged that, owing to the failure of defendant to construct and maintain the cattle-guards, he was compelled to herd his cattle in the inclosure for seventy days, and that the cattle were injured by being herded; and in which he sought "to recover for the expense of the herding, and for .the damage to the cattle. This pleading was subsequently withdrawn; but, on the trial, defendant introduced it in evidence. Plaintiff’s attorney testified that he prepared and filed the pleading without consulting with plaintiff’, and that he had no knowledge of its contents; and plaintiff testified that, while he had herded his cattle in the inclosure, he did not herd them for the length of time stated in the pleading, and that he did not keep them in the pasture for that length of time. Defendant asked the court to instruct the jury, in effect, that plaintiff was bom 1 absolutely by the admissions contained in the pleading, but the court refused to give the instructions asked. A party is bound, of course, by tlie statements or admissions of tlie pleadings upon which he tries his cause; and, when he withdraws a pleading, it may be introduced in evidence against him, hut, when so introduced, it has such force and effect, as evidence, only as any other written statement of facts made by him, or by his autlioiity, wonlcf have. It is not absolutely binding upon him, but he may show that the admissions contained in it were made inadvertently, or by mistake. Its weight, like that of any other instrument of evidence, is *532to be determined by the jury. We think, therefore, that the circuit court rightly refused the instructions asked.

g. BAiutoADS: fos|rol pasíireeo™damdlncefvl" VI. The circuit court instructed the jury that while plaintiff could not, under the issue, recover the cost of herding his cattle, yet if the herding was rendered necessary by the failure of defendant to construct the cattle-guards, the necessary cost thereof might b® considered in determining how much less the pasturage was worth than it would have been if the cattle-guards had been maintained. We think the instruction is correct. We held on the former appeal (65 Iowa, 640) that the measure of plaintiff’s damages was the difference between the value of the pasture, in the condition in which the inclosures were left by defendant, and what its value would have been if the cattlerguards had been maintained. We held, also, that plaintiff could not recover for any portion of the injury which he could have prevented by reasonable care. The evidence tended strongly to prove that the loss of substantially all of the pasturage could have been prevented only by herding the cattle upon it. In herding them, plaintiff did what was necessary to be done in order to save any portion of it. The cost of the herding was therefore a proper matter to be considered in determining its value. The value of the portion saved world necessarily be as much less than it would have been if the guards had been maintained as it would cost to save it.

We have found no errors in the record, and the judgment will be

Affirmed.