*100Opinion by
Mr. Justice Moore.The plaintiff contends that the superintendent’s deed conveyed no title, while the defendants contend that Johns, their grantor, having obtained a deed which purported to convey the fee simple title to the land in controversy, the state is estopped from claiming any after-acquired title, and that, plaintiff’s grantors having obtained their deed from the state with notice of the prior recorded deed, the legal title inured to the defendants. Section 20 of the act of congress, approved August fourteenth, eighteen hundred and forty-eight (9 U. S. Stat. 323), reserved sections numbered sixteen and thirty-six in each township in the Territory of Oregon for the support; of schools therein, and on July seventh, eighteen hundred and fifty-three, another act of congress was approved (10 U. S. Stat. 150), which authorized the legislative assembly of the territory to appoint the county commissioners of the several counties, or such other officer as it should direct, to select lands in lieu of sections sixteen and thirty-six when they had been taken under the donation law, or were otherwise disposed of. Whereupon the legislative assembly, in pursuance of this authority, passed an act, January thirty-first, eighteen hundred and fifty-five (Session Laws, 1855, p. 465), appointing the school superintendent of each county to select lands in his county in lieu of lands in sections sixteen and thirty-six lost to the territory by donation or otherwise, and on January twenty-sixth, eighteen hundred and fifty-six, passed another act (Session Laws, 1856, p. 69), which authorized the said superintendent to sell the school lands in their respective counties, for cash or upon time, and upon the payment of the purchase price to execute deeds thereto. Section 4 of the act of congress, approved February fourteenth, eighteen hundred and fifty-nine (11 U. S. Stat 383), granted sections numbered *101sixteen and thirty-six in every township to the State of Oregon, and it was provided therein that where either of said sections, or any part thereof, had been sold or otherwise disposed of, other lands equivalent thereto should be granted upon certain conditions therein named. These conditions were accepted by the legislative assembly of the State of Oregon June third, eighteen hundred and fifty-nine (Hill’s Code, 125), and the state thereupon became vested with the legal title to sections sixteen and thirty-six, and such other land as had been selected by the school superintendents in lieu thereof. It will thus be seen that the school superintendent of Marion County had authority, under the acts of congress, and of the legislative assembly of the Territory of Oregon, to select such lieu lands in his county, but that at the time his deed was executed the state had no title to any part of lot nine, which was situated in the county of Polk, and the question to be decided is, would the title to the triangular tract on the island, embraced in the superintendent’s deed, inure to Johns when the state acquired the legal title?
Section 6 of the act of January twenty-sixth, eighteen hundred and fifty-six, authorized the school superintendent to execute and deliver to the purchaser of school lands a bond conditioned that he and his successor in office would execute and deliver to such purchaser or his assigns a proper deed in fee simple, upon the payment of the purchase price and interest. Section 5 of article VHI of the state constitution created a board of commissioners for the sale of school and university lands, consisting of the governor, secretary of state, and state treasurer, and provided that its powers and duties should be such as might be prescribed by law, but no statute authorizing said board to make sale of school lands, or to execute deeds to purchasers thereof was enacted by the legislative assembly of the state until October twenty-second, eighteen hundred *102and sixty-four: Deady’s Code of Oregon, 1845 to 1864, p. 884. Section 7 of artitle XVIII of said constitution provided that all laws in force in the Territory of Oregon when the constitution took effect, and consistent therewith, should continue in force until altered or repealed. The state having acquired the legal title to sections sixteen and thirty-six, together with such other lands as had been properly selected in lieu thereof, the school superintendent of Marion County, on October twentieth, eighteen hundred and sixty, under the territorial act of January twenty - sixth, eighteen hundred and fifty-six, executed and delivered to Johns a deed, of which the following is a copy:
‘ ‘ Know all men by these presents, that whereas I, B. F. Bonham, superintendent of common schools in and for the county of Marion, and State of Oregon, in pursuance of an act passed by the legislative assembly of the Territory of Oregon on the twenty-sixth day of January, eighteen hundred and fifty-six, did, on the eighth day of September, eighteen hundred and fifty-seven, sell to John A. Johns three hundred and eighteen and sixty-four hundredths acres of the common school land of said Marion County for the sum of six hundred and thirty-seven dollars and twenty-four cents; and whereas the said John A. Johns has paid into the treasury of said Marion County the full purchase price of said land, wherefore I, the said B. F. Bonham, do by these presents bargain, sell, and convey unto said John A. Johns the following described tracts or parcels of school land as described on the plats of the United States, to wit: The south half of the southwest quarter of section twenty-eight in township seven north of range three west * * * containing three hundred and eighteen and sixty-four hundredths acres of land, more or less. To have and to hold the said premises, with all the appurtenances thereunto belonging, unto the said John A. Johns, his heirs and assigns, in fee simple forever.
*103“In witness whereof, I have hereunto set my hand and seal this twentieth day of October, eighteen hundred and sixty.
[seal.]
“B. F. Bonham,
“Superintendent of common schools in and for the county
of Marion, State of Oregon.”
It will be seen from the foregoing that the superintendent had authority to sell the school lands of Marion County, Oregon, and to convey the same by a fee simple title, and the deed therefor is to all intents and purposes a patent of the State of Oregon: Dolph v. Barney, 5 Or. 191. At common law, when the mode of assurance was a feoffment, fine, or common recovery, an estate actually passed by operation of the doctrine of estoppel, which not only divested the party of what interest he then had in the land, but of every estate which he might thereafter, by any possibility, acquire, and this doctrine is now applied to modern covenants; but a grant or a release did not have this effect, and hence deeds of bargain and sale, lease and release, have no greater effect by way of estoppel than the common-law grant or release. “When, however,” says Mr. Rawle, in his work on Covenants for Title, 388, “it has distinctly appeared in such conveyance, either by a recital, an admission, a covenant, or otherwise, that the parties actually intended to convey and receive, reciprocally, a certain estate, they have been held to be estopped from denying the operation of the deed according to this intent.” In Van Rensaelar v. Kearney, 11 How. 325, it was held that if the grantor sets forth on the face of the instrument by way of recital or averment that he is seized or possessed of a particular estate in the premises, and which estate the deed purports to convey, the grantor and all persons in privity with him shall be estopped from ever afterward denying that he was so seized and possessed *104at the time he made the conveyance. In Taggart v. Risley, 4 Or. 235, the doctrine announced in the preceding case was quoted with approval, and it was there held that from the language employed in the deed it was evident the grantor intended to convey, and the grantee expected to become invested with, the land itself in fee simple, and that a covenant for quiet enjoyment estopped the grantor from setting up an after-acquired title. The case of Bailey v. McCoy, 8 Or. 259, was an action to recover damages for an alleged breach of certain covenants in a deed which purported to convey only the right, title, and interest of the grantors in certain premises, with covenants of ownership, freedom from incumbrances, and general warranty. It was there held, affirming the doctrine of Taggart v. Risley, 4 Or. 235, that the action was maintainable. In Wilson v. McEwan, 7 Or. 87, it was held that a power appointing an attorney to bargain and sell or dispose of in any manner he might see fit any lot as fully and effectually as the principal could do if personally present, authorized the attorney to execute a warranty deed upon a sale of said property, thus affirming the doctrine announced in Taggart v. Risley, 4 Or. 235, also held that the grantees of the principal were estopped from setting up any after-acquired title.
In the case at bar, the superintendent, in pursuance of the statute then in force, executed and delivered a deed to defendant’s grantor which, upon its face, purported to convey an estate in fee simple forever, and expresses a manifest intention to deal with the land itself and not with a mere interest therein, which deed having been accepted by the grantee, it must be presumed the parties actually intended to convey and receive reciprocally the estate therein specified, and it only remains to be seen whether the state is estopped from denying the operation of the deed according to this intent. While there is a conflict of *105authority upon this question in cases where the officers have acted within the scope of their powers, the courts have uniformly held that the doctrine of estoppel cannot be invoked against the estate in support of the unauthorized acts of its officers and agents, however long acquiesced in: Attorney-General v. Marr, 55 Mich. 445; Pulaski County v. State, 42 Ark. 118; Day Company v. State, 68 Tex. 526. In State ex rel. Lott v. Brewer, 64 Ala. 287, it was held that all who deal with the officers or agents of the govern ment must inquire at their peril into the extent of their power, and that the act of no agent, public or private, not within the scope of the agency, can bind the principal by way of estoppel, no matter how much reliance may have been placed upon it. “A state,” says Mr. Throop, in his work on Public Officers, § 551, “is never estopped on the ground that its agent is acting under an apparant authority which is not real.” Assuming that the term, “in fee simple forever,” as used in the superintendent’s deed, was sufficient to convey an after-acquired estate, it could only apply to state lands in Marion County. The superintendent had no authority to sell or convey the school lands situated in the county of Polk, and the attempt on his part to do so was unauthorized. And as the state is only estopped by the acts of its agents and officers when done within the scope of their authority, the doctrine of estoppel cannot be invoked in the case at bar.
The plaintiff, in substance, alleged that accretions having been gradually formed on the east side of said lot nine had caused said river to recede till the old channel has become filled with sand, gravel, and loam, and the river now flows on the west side of said lot, and that the east boundary thereof has, in consequence of such accretions, been extended to the center of the old river bed, which was described by course and distance. This allegation *106was stricken out by the court, and, as the plaintiff contends, erroneously. We think the allegation was material and presented an issue as to the boundary between the estates of the parties hereto. The court must take judicial knowledge that the Willamette River, as it flowed between lots six and nine, was a public navigable stream (Shaw v. Oswego Iron Company, 10 Or. 371), and hence the title to the bed thereof was in the state: Gould on Waters, § 158. If by any sudden change in the course of the river, the old bed became filled with sand, gravel, and loam, the state was was not thereby divested of its legal title, and neither plaintiff nor defendant could claim any interest therein, except as to such parts as had been added to their respective estates by imperceptible accretions, and the line where such accretions met would become the boundary of their estates: Buse v. Russell, 86 Mo. 209. This was an issue tendered by the plaintiff, which it was entitled to have tried, if contested, and the motion to strike the said allegation from the complaint must be overruled. Ejectment is the proper remedy for settling questions of disputed boundaries, but equity having obtained jurisdiction for the purpose of quieting the title to the disputed tract will retain it for the purpose of ascertaining the extent of the accretions thereto when controverted by others. The decree appealed from will therefor be reversed, and a decree entered here for plaintiff that it is the owner in fee of said lot nine, together with the accretions, if any, and quieting its title thereto, and that the cause be remanded to the court below to determine the question of boundary, if the allegation so erroneously stricken out shall be controverted.
Reversed.