This is an action of ejectment, to recover a strip of land about three rods wide lying along the east and west section line, between section ten and section three, in the same town and range, the plaintiff owning the 27. W. quarter of the 27. E. quarter of section ten, and the defendant owningthe S. W. quarter of the S. E. quarter of section three, and in possession of said strip. About eighteen years ago, while the parties, or those under whom they hold, were in the occupancy of their respective tracts, a highway was laid out on what was then supposed to be the section line, and was laid out by blazed trees, before and then existing, as was supposed, to mark the section line, and the parties, or those under whom they claim, respectively, built a fence about one rod north and south from the center of the supposed highway. There was not then, and since that time there has not been, anything said between the parties in re*109spect to said section line, and nothing has ever been done by the parties with reference to such line. The fences were built for the purpose of fencing in said highway, and for no other purpose, as disclosed by the evidence. A few years afterwards the blazed line, and consequently the highway, being very crooked, the highway was straightened by a removal thereof in some places of several rods, and the parties again adjusted their respective fences according to such new and straightened line. About fifteen years ago, there being still a question as to the true section line, there was an attempt to survey the sections with a view of ascertaining it; but such attempt then failed, and was abandoned, for the reason that the stake or monument, and the bearing trees at the section corner, had been destroyed, and their true location could not be readily ascertained.
In 18'T'T there was a survey ordered by the town, and the county surveyor made an original survey, in what appears to be the usual manner, for the purpose of ascertaining and fixing said section corner and the true section line between said sections, which appears to have been lawfully and properly made. The highway was then moved upon such newly ascertained section line, and the parties again removed their respective fences along said last located highway, which left the defendant in possession of said strip of land as a part of his forty acres. The plaintiff, in explanation of this last removal of his fence along the highway, testified that he did so only because he was ordered to do it. There had never been any dispute or disagreement between the parties as to the real section line, and what was done by way of building fences or making other improvements on or contiguous to said strip, was so done with reference to the highway and not to the true line between the sections. There is nothing in the evidence which would materially change this statement of facts. On such a case, the instructions of the court excepted to were either not the proper *110statement of the law, but if correct were clearly not applicable. The first instruction assumes that the parties made their fences and improvements in reference to the supposed section line, when in fact they did so solely in reference to the highway. The second instruction assumes that there was an agreement as to the line, and thereby an adoption of such line, and that the plaintiff built his fence and made his improvements in accordance therewith, when there was no evidence whatever as to such an agreement. The third and fourth instructions excepted to are: First, to the effect, if there was no formal agreement of this kind, such an agreement might be inferred by the long acquiescence and conduct of the parties; and, seoondkj, that such acquiescence and conduct had been shown, or that there was evidence tending so to prove. There was really no evidence -whatever to which any of these instructions, admitting them to be good law, were applicable.
The case presented by the testimony is the very common one in a new country of a common ignorance of the true section line, and the laying out of a high-way as near to it as was then practicable, and the adjustment of the first fences thereto, to meet the present necessity of clearing and cultivation, and of travel. Hence it was extremely crooked, and afterwards was straightened, and the fences again adjusted to it. The real and true line for many years -was not attempted to be ascertained by anybody, and not until the stakes and bearing trees had been destroyed. There seems to have been a question all the time as to where the true section line was, and this question appears to have continued an open one between these parties also, as shown by their adjustment of their line fences to the highway, wherever it -might be located, without anything being said between them as to where the true line was or might be. If an equitable estoppel by oral agreement, or by conduct or acquiescence, in a case like this, can obtain, it would be effectual to fix the *111real section lines of nearly all of the lands of early settlement, -without the necessity of a survey, and settle the boundary of nearly all of the lands first occupied in a new-country.
It may be that the doctrine of acquiescence and estoppel thereby was properly stated in the instructions, and might have been considered by the jury if there had been any evidence to support it; but there was no such acquiescence proved, either for ten years or for any time. There was always a question about the true boundary, and there was equal ignorance of it on the part of everybody, as well as these parties, until finally ascertained by an original survey.
Quaere: Gan a plaintiff in ejectment recover, by proof of acquiescence in a certain boundary, land which he does not hold by a legal title? . It may, perhaps, be made matter of defense and defeat a recovery by the plaintiff, because equitable defenses are allowed under the code. But here there was no acquiescence, and therefore the question is not material. Erom the very meaning of the word “ acquiescence,” the party estopped thereby must have some knowledge of its subject matter, and either act or remain silent in reference thereto. It is hard to conceive how a party can acquiesce in a boundary of land about which he neither knew anything nor pretended to know anything, or about which there had never been any discontent, question, or dispute.
The doctrine of equitable estoppel, as to the boundaries of land, has taken almost as many forms as there are courts, and is often very loosely stated. In such case the safe rule — ■ and the only safe rule — is for us to adhere to that particular application of it which has been so clearly established by this court in the case of Gove v. White, 20 Wis., 425, and 23 Wis., 282, by Chief Justice Dixon in the first case and Judge Paine in the other. Judge Dixon says: “ One essential element of every equitable estoppel, by which a man is to be precluded from claiming what is his own, is that the purchaser and party claiming the benefit of such estoppel should have been igno*112rant of the true state of the title. Ignorance of the true state of the title on the part of the purchaser must concur with wilful misrepresentation or concealment on that of the owner.” This is the doctrine as between vendor and purchaser. Judge Paine says (in relation to the party to be estopped): “He must have understood that there was cm xmcertavnty about the trxce line, and that he was agreeing and assenting to the line fixed upon; and if it appears that he did so agree, and knew that the defendant afterwards built his fence upon the line thus fixed, and put up valuable improvements, without objecting, he would clearly be estopped from denying that the line agreed on was the true line.” And again: “ It is the fact that there is a dispute and an uncertainty in the minds of the parties as to the true line that gives to such voluntary agreements fixing a boundary that binding character which has induced the courts so steadily to uphold them.”
The law as thus stated was not given in the instructions. If it had been, the jury would probably have found that no such estoppel by agreement or acquiescence, which is the evidence of an agreement, had been established in the case. The only evidence of the true boundary and the section line consisted of the last survey in 1811, establishing the line to which the highway and the fences of the parties were lastly adjusted, and this leaves the strip in the possession and within the inclosure of the defendant. The learned counsel on both sides have presented very able briefs, and cited many authorities ; but as we view the case, in the light of the law as above laid down by this court, it is unnecessary to review such authorities. There was a motion for a new trial, which was not formally overruled; but it was substantially overruled by the entry of judgment, and the facts are sufficiently before this court to establish the above proposition, that the instructions were either not the proper statement of the law, or were inapplicable to the facts.
By the Court.— The judgment of the circuit court is reversed, and the cause remanded for a new trial.