This is an action of ejectment, in which plaintiff seeks to recover a strip of land four and a half inches front on the north line of Carr street, in the city of St. Louis, by 155 feet in depth, which plaintiff claims is a part of lot number 5, in block 950. The petition is in the usual form, and the answer a general denial and the statute of limitations. There was a judgment for defendant, from which plaintiff appealed to the St. Louis court of appeals, where it was affirmed, and plaintiff has appealed to this court.
Plaintiff bought his lot, then unimproved, November 13th, 1865, and Lynch bought lot number 4, adjoining it. on the east, in December, 1866. Desiring to build on his *66lot, Lynch had Cozzens to survey and ascertain its boundaries. Acton was not notified of, nor did he participate in, the survey. It may be assumed, so far as the question now before us is concerned, that by this survey a parcel of plaintiff’s lot, four and a half inches wide, was encroached upon. Soon after it was made, without any consultation with Acton, or anything said or done by him, Lynch excavated for his cellar, and built the foundation walls of his house, the west wall of which we assume was four and a half inches on Acton’s lot. At the time of said survey, there were no stakes or corner stones on either of said lots, or contiguous lots, indicating their boundaries, and Acton and Lynch were equally ignorant of the true line between them. After Lynch’s cellar wall was built, and before he began to erect the superstructure upon it, Acton commenced to build a house on his lot, and, instead of having a survey made, located the west line of his lot by measuring twenty-five feet (the width of his lot) from Lynch’s west wall, and completed his house before Lynch finished his. There is nothing in the testimony to show that Lynch knew how Acton ascertained his west line, or that Acton had built his house to the line ascertained as above stated. After Acton and Lynch had moved into their houses, Acton asked, and obtained permission of Lynch, to put a few boards on Lynch’s fence, running north and south from the west wall of Lynch’s house, and built a coal-shed, adopting Lynch’s fence as the east wall of the shed. This fence was made about the time that Lynch’s house was erected. It does not appear whether the coal-shed was built after or before the completion of Lynch’s house, but it was after Lynch moved into it. It appears also, that sometime after the completion of the two dwelling houses, Acton complained to Lynch of the projection of the cornice of Lynch’s house, two or three feet, over on Acton’s lot, and it was removed. The circuit court and the court of appeals held, that on the foregoing facts, Acton was es-*67topped from claiming the strip of land in dispute, and the correctness of that view, is the only question before us.
l. estop PEL BY conduct. In Bigelow on Estoppel, 438, it is stated that: “ The following elements must be present in order to an estoppel by conduct: 1st, There must have been a misrepresentation or concealment of material facts. 2nd, The representation must have been made with knowledge of the fact. 3rd, The party to whom it was made must have been ignorant of the truth of the matter. 4th, It must have been made with the intention that the other party should act upon it. 5th, The other party must have been induced to act upon it. The term £ representation,’ is used for convenience. It is not necessary that there should have been express statements. The representation may be implied from acts, silence or concealment.” Again he says: “ The rule is well settled, that if the representation containing all the foregoing elements has also been acted upon, the estoppel arises.” Ib., 492. “ But unless the representation is acted upon, the estoppel cannot arise,” (Ib., 493;) and “ it seems that it must be exclusively acted upon ; at all events, there can be no estoppel where the party claiming one, is obliged to inquire for the existence of other facts, and to rely upon them also in acting.” Ib., 493.
In Herman on Estoppel, the doctrine is thus stated: “ Before the party is concluded by an estoppel, it must appear, 1st, That he has made an admission which is clearly inconsistent with the evidence he proposes to give, or the title or the claim he proposes to set up. 2nd, That the other party has acted on the admission. 3rd, That the other party will be injured by allowing the truth of the admission to be disproved. When the acts and representations of the party must have influenced the other to do acts which he would not otherwise have done, and when a denial or repudiation must operate to the injury of such other party, the estoppel is created.” Rage 337. Taylor v. Zepp, 14 Mo. 482; Bales v. Perry, 51 Mo. 449; Spur-*68lock v. Sproule, 72 Mo. 509, recognize these general principles.
2._: agree“ary unes^aai verse possession. Most of the eases relied upon by respondent, arose upon controversies between co-terminous proprietors respecting the line between them; and, where they were not lines established by agreement ketween the parties, in ignorance as to the true line, they were lines acquiesced in by both parties, and in reliance upon such acquiescence one of the parties had made permanent valuable improvements up to the line, and on the land in dispute. The former cases are frequently cited on the subject of estoppel, while, strictly speaking, they do not involve a question of estoppel, although frequently, but incorrectly, we think, placed in that class of cases. Turner v. Baker, 64 Mo. 218, belongs to that class. There, certain acts of co-terminous proprietors were held admissible as evidence to prove an agreement between the parties, which the law sanctions, by which a division line was established, both parties being in ignorance of the true line; but the facts were not held to be such as would create an estoppel. In many of the cases which have been decided on the ground of estoppel in pais, the facts, as in Turner v. Baker, might have been relied upon as evidence of an agreement, and the case might have been decided on that ground, as well as that of estoppel. In Knowlton v. Smith, 36 Mo. 512, it was said, that although parties agree upon a division line, under a mistake of facts, neither of them is precluded from claiming to the true line, unless the rights of innocent third persons have intervened; but Turner v. Baker announces a different doctrine, and one, which we think more in accord with reason and authority. The mistake of facts is the very element which makes such an agreement valid. If the parties are not mistaken as to where the true line lies, an agreement between them by which a different line is established, which gives a portion of the land of one to the other, would be void under the statute of frauds* ..The facts which will establish an ad*69verse possession, are not to be confounded with those which will create an estoppel in pais, as seems to have been done in Knowlton v. Smith. Lynch’s possession was certainly adverse to A«ton, and had it continued long enough in him and his grantee, (the defendant,) would have barred a recovery by Acton.
3.-: silence, Here it may be observed that Collins v. Rogers and Evans v. Snyder, 63 and 64 Mo., are wholly inapplicable to the ease at bar. They decide that where the owner of land, knowing that he is such, stands by silently, and sees the occupant making lasting and valuable improvements upon the property, he will be estopped from claiming it. Silence in some cases will estop a party, “but silence without knowledge works no estoppel.” 31 Pa. St. 334. “ If no one has been misled to his hurt, if no injury has arisen from the conduct, declarations or silence of a party, he will not be estopped from contradicting them, even though they would be conclusive against his right, if not contradicted.” “There is a wide difference between silence and encouragement.” “ But there is no such thing as estoppel in pais for neglecting to speak or act when the party did not know the facts, which if known would have made it his duty to speak or act.” 6 Hill 16; 14 Cal. 368. Acton knew that he owned lot number 5, but did not know where the line ran. He did not know that a portion of Lynch’s wall was on his lot. He and Lynch were equally ignorant of the true line, and had equal opportunity to ascertain it. Hence, the, doctrine of Collins v. Rogers and Evans v. Snyder, supra, has no application here.
i_. ease ad_ judgea, This case is also distinguishable from Taylor v. Zepp and Majors v. Rice, and other cases of that class in which one or both of the parties had the line aseertained by survey, and both, acquiesced in it, and, relying upon such acquiescence one made valuable improvements to the line thus ascertained, and claimed a>n estoppel against the other. Under the authorities herein reviewed, an estoppel in pais did not arise, upon the facts in *70this case. Acton neither misrepresented nor concealed any material fact, for he was as ignorant as Lynch of where the true line ran. He made no representation whatever to Lynch. Lynch was not induced by anything said or done by Acton, or any silence on his part, either to build his cellar wall, or to rear his superstructure upon it. It is not shown that he knew the fact, that Acton had measured twenty-five feet west from Lynch’s wall, to ascertain the western line of his own lot. Lynch does not state that anything said or done by, or the silence of Acton induced him either to build his fence, cellar wall or house, or after the wall was made, to continue the erection of the house.
It appears that after Acton and Lynch moved into their respective houses, Acton had permission from Lynch to use his fence as the east wall of a coal-shed which Acton built on his own lot, but it nowhere appears that Lynch’s improvements were not then completed, or that Lynch, in consequence of such recognition of the line by Acton, made any further improvements. In fact, the evidence clearly shows that not by anything said or done by Acton, or by his silence, was Lynch induced or encouraged to make his improvements to the west line, as ascertained by Cozzens, but that he relied exclusively upon that survey. The fact that Acton had permission to use Lynch’s fence as a wall for his coal-shed, that he complained to Lynch that his cornice projected several feet over on his lot, and that he ascertained the western line of his lot by measuring twenty-five feet from Lynch’s wall, might be admissible as evidence to prove an agreement between the parties to establish the Cozzens line as the true line, if there were not in the case the positive testimony of both Lynch and Acton that there was no such agreement. There is no claim that there was an agreement, and nothing is relied upon but an estoppel in pais. There is an absence of nearly all the elements of an estoppel as against Acton; and Lynch could with more propriety be held to be estopped from disputing the Cozzens line, in a controversy in which that question should *71arise between them, wherein Acton should contend for that line. For instance, let us suppose that, after Acton’s house was completed, Lynch had discovered that Cozzens had, by mistake, located his west line five feet east of the true line, and sued Acton for that strip, which would embrace the east wall of Acton’s house, the latter would have had a case of estoppel against Lynch, analogous to that which was declared against Majors in Majors v. Rice, supra. Lynch had the line run, adopted it as the true line, and built to it. Acton knew that Lynch had done so, and, supposing that Lynch had ascertained the true line, recognized it as such, but gave no expression of that recognition, of which Lynch was cognizant, until after the latter had completed his improvements. Proceeding upon the impression made upon Mm by Lynch’s conduct, he erected his dwelling house, which, by the case supposed, occupied five feet of Lynch’s lot. Can there be any question that these facts contain more of the elements of estoppel against Lynch than are found in the same facts to create an estoppel against Acton ? “ Silence without knowledge works no estoppel,” and if Acton was ignorant of the true line and did not do or say anything to induce or encourage Lynch to build to the Cozzens line, what blame attaches to him, for recognizing the line, on Lynch’s representation that it was the true line, or how was Lynch injured by Acton’s recognition of the Cozzens line as the true one? All that can be said is, that by Acton’s conduct, if Lynch was aware of it, it gave Lynch additional assurance that he had erected his house and other improvements to the true line. But that by no means creates an estoppel under any authority to be found in the books. The judgment is reversed and the cause remanded.