1-. The assignments of error to which substantially the whole of appellant’s brief and argument is devoted involved the contention that there was no evidence to support the several findings of the jury upon which liability of the defendant is predicated. The rules of law governing such a situation are familiar, and need hardly more than statement. The master owes it to his employee to make the place rvhere the latter is to work reasonably safe, so that injury is not reasonably to be expected by one of ordinary foresight and care. McMahon v. Ida M. Co. 95 Wis. 308, 10 N. W. 478 ; Mielke v. C. & N. W. R. Co. 103 Wis. 1, 79 N. W. 22. This duty is qualified by the further rule that the master is not to bo made liable, although there are defects, and although the place is not safe, if such defects and unsafety either were known to the employee, or were so apparent that they should have been known to him in the exercise of ordinary care and observation consistent with the situation presented. Larsson v. McClure, 95 Wis. 533, 70 N. W. 662; Dugal v. Chippewa Falls, 101 Wis. 533, 77 N. W. 878; Mielke v. C. & N. W. R. Co., supra. The appellant asserts that there was no evidence upon which the jury could have found that the place was unsafe, or that, if so, the defendant knew it or by reasonable diligence could have known it, or that the plaintiff was ignorant, or could, consistently with reasonable care, have been ignorant, of the true situation; and he further contends that if the place in question were unsafe in the respect found *499by the jury,' namely, in the burning away of the fastenings which held the horizontal timber in place on top of the vertical post, still there is no evidence that the fall of the timber and the injury to the plaintiff were due to that condition.
We have examined the evidence with great care, and find that it is characterized by some measure of conflict and dispute as to the situation, and also by considerable measure of uncertainty in the application of the statements of witnesses to the situation and the structure under which the plaintiff was working. In the latter respect, of course, we must recognize the superior advantages of both jury and trial judge to understand what the witnesses meant. Clifford, v. M., St. P. & S. S. M. R. Co. 105 Wis. 618, 81 N. W. 143. There is, however, no doubt that plaintiff was expected to work under this network of timbers and tram tracks, and that any condition thereof which rendered their fall probable in the course of the performance of the service as it had been laid out would justify an expectation of injury to workmen of the class of the plaintiff. It appears that the fire occurring three weeks before had been effective to bum away posts and superstructure for a considerable distance, but had lost that measure of force and destructiveness just short of the post near which plaintiff was injured, which is called in the testimony, and will be spoken of hereafter as, the “southwest post.” It also •appears that the fire had nin to some extent over all the rest of the trestlework, but, generally speaking, not so as to seriously destroy timbers or impair the strength of the structure. There is evidence of two witnesses that as to this southwest post much more destruction had taken place than with reference to the others which were still standing. One witness says that he looked at the post after the timbers. fell, and found that the top had been burned off. Another testifies that the cap was already gone, but that the burning was not easily discoverable from the ground to the eastward of this post, both because it was more on the westerly side of the post, and *500because the timbers bad some coating of ice, obscuring tbeir true condition, but that such ice had been broken away on the westerly side of the post. There is also evidence that the defendant’s foreman, generally in charge of the yard, had gone over this structure soon after the fire, and that he had gone onto and inspected the condition of this particular post only a day or two before the catastrophe. He contradicts the testimony as to its condition, but that, of course, could only suffice to make that a jury question.
In this situation, we are unable to say that there is no evidence that the fastenings intended to retain this large timber on top of the upright had not been so destroyed and impaired by fire as to render them inadequate; nor are we able to say, as the counsel for appellant argues, that the defendant and the plaintiff stood upon an equality as to their opportunities for knowledge. Plaintiff had been placed upon the ground, working from the east westward. He had had no duty, nor suggestion of any reason, which should take him to the west-. ward of this alleged defective comer; and, as we have said, there is testimony that its defects were not apparent as he worked toward it on the ground. The shoveling away of coal at the bottom of the pile was the method adopted by the master for doing the work upon which plaintiff was employed. This rendered certain the precipitation of the coal from the top of the pile down the steeply inclined easterly face thereof from time to time, whether by reason of its own weight, or by reason of its being picked away, as was in progress at the time of the injury; and, of course, the contact of such falling lumps with the posts was not only a probability, but practically a certainty. The lump which fell at the time of the injury certainly cannot be said to have been of a size beyond reasonable expectation. It is described as about eighteen inches long by a foot wide and six or eight inches thick, and, while made' up of coal fastened together by ice, it was no larger tiran lumps 'of soft coal are often found. So that the *501peril of contact of such lumps witb the standing posts was one of those with reference to which it was the duty of the master to see that the overhead structure was reasonably safe. Hence, upon the four questions as to the existence of a defect creating unsafety, the knowledge or opportunity of knowledge of the master, the ignorance of the plaintiff, consistently with due care, and the reasonableness of expectation that injury might result, we are clear that there was at least some evidence which might, to the minds of reasonable men, lead to the answers given by the jury.
But it is argued that the further question whether such defect was the actual cause of the fall of the timber and the plaintiff’s injury is pure conjecture, into which the jury ought not to have been allowed to stray. We cannot think so. It is in evidence that the four upright posts constituting a section were-connected by diagonal braces near the top, which drew the tops toward each other, so that the top of the post in question was leaning towards the northeast, — held there by the strain of the transverse braces. It is found by the jury that the caps, which under ordinary circumstances had been relied on to hold the horizontal timber in place and prevent it from slipping off of the top of the post, had been destroyed to such degree as to render the situation unsafe; and there is evidence that the top of the post had been burned off to some extent. Now, if in this situation one of the events likely to occur in the course of the work as the master directed it to be done, namely, the collision of a, lump of coal with the post, was likely, in ordinary human experience, to cause this horizontal beam to slip off of the top of the post eastward, how can it be said that the jury, in view of the whole situation, and in the absence of evidence of any other cause, could not have concluded, as reasonable men, that that situation was the cause of the precipitation of the timber? We think they might. The timber could not fall without some cause. One is shown, sufficient within ordinary probabilities. The infer*502ence is reasonable that sucb one was the canse, in absence of any other reasonable one. It is urged that there is a physical fact inconsistent with such conclusion and which renders it unreasonable and impossible. That fact is that the timber was found on the easterly side of the post, whereas it is claimed that the effect of the collision of the lump of coal would have been to drive the post to the eastward, so that the timber would have fallen on the westerly side of it. We cannot say that this conclusion is unavoidable. If upon an inadequate and partially burned-away end of this post there were insecurely resting a timber, a mere jar might well suffice to set it in motion, in which event its slip would naturally be toward the east, as the top of the post inclined that way. There is no necessary and unavoidable inference that the fall of a sixty-pound lump of coal against a 10x10 timber, with the bottom embedded in three or four feet of coal, would serve to move that timber materially in the direction of the falling lump. We think it at least equally probable that, while the jar would be considerable, the actual movement of the top of the post to the eastward might be almost infinitesimal. Hence we find ourselves unable to declare that the jury could not, as reasonable men, have answered that the_ defective condition at the top of the post was the proximate cause of plaintiff’s injury by the falling timber.
2. Appellant complains of the instruction to the jury defining “proximate cause.” That instruction informed the jury that, in order to find proximate causation, they must be satisfied that the injury was the natural and probable consequence of the defect, and foreseeable by exercise of ordinary care. These are the essential elements', and, while more amplification of some of the terms used has been approved in some cases, the omission of such amplification is not error,— certainly when not formally requested. We find no* error in the instruction on this subject.
3. Appellant urges a group of assigned errors predicated *503upon tbe refusal of the court to submit, as part of the special verdict, certain other'questions. In view of the fact that in ■.a case of this simplicity some nineteen questions were submitted, we should expect to find redundancy rather than deficiency. The first complaint is that the jury were not asked whether the risks and dangers of the woi'k were open and obvious to a person of ordinary intelligence.. This fact, if it existed, was an evidentiary one, and was naturally involved in the two questions submitted, namely, whether the plaintiff knew of the unsafe and dangerous condition, or by the exercise of ordinary care should have known. Of course, the latter of these questions must have been answered in the affirmative if that condition was open and obvious, and the court carefully so instructed the jury. In the refusal of this additional question no error was committed.
The appellant also complains that no question was submitted' as to whether the conditions and surroundings of the place of plaintiff’s work were changing as a result of the work in which he was engaged. The only defect upon which plaintiff was allowed to recover was the condition of the fastenings of timber to the southwest post, resulting from a fire occurring some three weeks before. There was no particle of evidence that that condition was in any respect caused or changed by reason of the work in which the plaintiff and his fellow-servants were engaged. It was a condition existing before their work commenced, and with reference to which their work was done, and obviously was intended to be done by the defendant. The fact that day by day, as they carried off coal, they progressed from under one timber to another, was not in any respect changing or creating the conditions of the place of work in the respect complained of and made the basis of liability. Had the business of this gang of men been the tearing down of a structure such as here described, it might be claimed that weakening of the portions of the structure still standing, resulting from previous work, was a condition which they them*504selves created and changed, and which therefore must he held to be within their knowledge as fully as within that of their employer. It would he as reasonable to contend that a painter progressing, up ward on a ladder, and injured by reason of a defective rung, changed and therefore created the conditions of his work, because he had gradually progressed upward toward the defect.. This principle of the employee’s responsibility for the conditions which he and the force with which he works create is fully illustrated in Larsson v. McClure, 95 Wis. 539, 70 N. W. 662, and Mielke v. C. & N. W. R. Co. 103 Wis. 1, 79 N. W. 22. Those illustrations make obvious its inapplicability to the situation presented in this case,— of an inadequate and perilous overhanging structure, with reference to which the plaintiff performed no duty and had no relation, except to be compelled to work under it.
Complaint is also made of the failure to' submit some other alleged issues, — such, for example, as whether the weight of ice'broke the structure down, and whether any warning or caution was given to the plaintiff. On neither of these, however, was there any conflict in the evidence to- warrant their submission to the jury; and, at best, the facts to be called out by them would have been evidentiary upon certain of the issues which were submitted and passed upon.
4. Exception was taken and error assigned upon the admission of evidence that a couple of sections of trestlework lying to the south of that where plaintiff was injured were taken down some two or three days before the accident occurred. Wherein the admission of such testimony could have been prejudicial to the appellant is not pointed out. The court carefully excluded any liability of the defendant for any weakening of the remaining structure which might have resulted therefrom because, not pleaded. The admission of such proof was entirely natural in the description of the situation, which could hardly be made intelligible otherwise; but, in, any event, the fact so proved was alleged in the complaint *505and not denied by the answer. We can discover no prejudice in the admission of this evidence, even if its admission were •considered to be erroneous.
The foregoing are all of the errors argued by appellant, •either in his brief or orally, though others are assigned. It cannot be the duty of this court, under such circumstances, to seek out the reasons for the assignment of others, or their applicability to the case. Butter v. State, 102 Wis. 364, 78 N. W. 590; Cornell v. State, 104 Wis. 527, 535, 80 N. W. 745. Among those which the appellant has deemed worthy of argument we find none which can justify us in reversing the judgment.
By the Gouri. — Judgment affirmed.