
58 U.S. 23 (1854)
17 How. 23
MARCELIN HAYDEL, PLAINTIFF IN ERROR,
v.
FRANCOIS DUFRESNE.[*]
Supreme Court of United States.

It was argued by Mr. Janin, for the plaintiff in error, and submitted upon a printed argument by Mr. Grailhe, for the defendant in error.
*27 Mr. Justice CATRON delivered the opinion of the court.
The plaintiff and defendant are respectively owners of tracts of land forty arpens deep, situate in a concave bend of the Mississippi River, in Louisiana; their tracts front on different sides of the deepest point of land, and when the side lines of each tract are extended perpendicular to a base line corresponding with the bank of the river, the two tracts interfere before the second depth of forty arpens is obtained.
By the 5th section of an act approved the 15th of February, 1811, congress provided "that every person who, either by virtue of a French or Spanish grant, recognized by the laws of the United States, or under a claim confirmed by the commissioners appointed for the purpose of ascertaining the rights of persons claiming lands in the territory of Orleans, owns a tract bordering *28 on any river, creek, bayou, or watercourse, in the said territory, and not exceeding in depth forty arpens French measure, shall be entitled to a preference in becoming the purchaser of any vacant tract of land adjacent to, and back of his own tract, at the same price and on the same terms and conditions as is or may be provided by law for the public lands in said territory. And the principal deputy surveyor of each district, respectively, shall be, and he is hereby authorized, under the superintendence of the surveyor of the public lands south of the State of Tennessee, to cause to be surveyed the tracts claimed by virtue of this section. And in all cases where, by reason of bends in the river, lake, creek, bayou, or watercourse bordering on the tract, and of adjacent claims of a similar nature, each claimant cannot obtain a tract equal in quantity to the adjacent tract already owned by him, to divide the vacant land applicable to that object between the several claimants in such a manner as to him may appear most equitable."
Those under whom the plaintiff and defendant hold their lands, respectively, availed themselves of the preëmption accorded by this law. The husband of the plaintiff, having 155 80/100 acres in his front tract, paid into the hands of the receiver of public moneys, $148.75, for a certificate of the entry of 119 acres of the lands in his rear. Nicholas Haydel, under whom the defendant holds, owned a front tract containing 249 54/100 acres, and paid into the hands of the receiver of public moneys the price of 248 acres, for his entry of the back lands, under the law.
The whole quantity of land in the rear, subject to their entries, was 322 48/100 acres, as to which there was no conflict between them and any other proprietors. Of this quantity the principal deputy surveyor of the United States allotted to Haydel 243 20/100 acres, and Dufresne 79 28/100. His survey dividing the land in dispute was part of a township survey, and was approved in March, 1831, by the surveyor of public lands south of the State of Tennessee, and a patent was issued to Haydel for 243 20/100 acres of the land, in 1845.
The petition charges error in the division, but nothing more, and asks a redivision of the land by the district court, on the sole ground of a vested equity in the plaintiff to forty acres of the land granted to Haydel. It is not alleged that Haydel controlled the surveyor, or had any connection with, or even knowledge of, the alleged error when the survey was made.
On this state of pleading and fact, the district court decided for the defendant, and dismissed the petition; and an appeal was prosecuted to the supreme court of Louisiana, which reversed the judgment of the district court, and ordered that *29 court to cause the land in dispute to be divided by a resurvey, so as to give Dufresne forty acres of the land for which Haydel had obtained a patent. This judgment was given on the assumption that, by their respective entries in the district land-office, each party took an equity in the back land in proportion to the quantity of his front tract, when compared with the contending tract; and that thus the respective equities stood before and at the time when the lands were officially surveyed; and that the principal deputy who laid off the lands, under the supervision of his principal, acted in a merely ministerial capacity, and had no discretion to divide them so as to give Dufresne less than a full proportion of the whole. If it be true, that irregular entries of unsurveyed back lands, which entries were allowed by courtesy of the general land-office, vested an equity in the enterer, and divested the United States of title, as the state court held, then it must follow, that after the entries were generally made in this loose form, throughout the coast of the Mississippi River, in Louisiana, that the courts of justice might have decreed partitions among front proprietors, in all instances, and have had the lands surveyed by judicial authority, and superseded the action of the United States altogether, as required by the act of 1811.
These anomalous entries were conditional, and made subject to a future public survey; to this effect the receipt for the money was given by the receiver, and the register was instructed not to transmit the certificate of purchase until the survey was completed.
The constitution vested congress with power to dispose of the public lands, and to make all needful regulations for this purpose; and as respects the class of lands under consideration, the proper department ordered, as a rule having few exceptions, that they should be laid down as part of a general plan of township surveys, and in connection with the public lands and private claims adjoining; and that this general survey should settle the quantity and form of each tract of back land to which a front owner had a preference of entry.
In this instance the survey was made by the principal deputy of the proper district, under the superintendence of the surveyor of public lands south of the State of Tennessee, as required by law; by this survey, it was ascertained that neither of the claimants here litigating could obtain a tract equal in quantity to his front tract; and therefore it became necessary for the surveyor, assisted by his immediate superior, to divide the vacant land between these two front owners, "in such manner as might seem to him most equitable." When the survey was approved, if the party here suing supposed himself aggrieved, *30 he was authorized to appeal from the decision of the principal deputy, and the surveyor-general south of Tennessee, to the Commissioner of the general land-office; and from his decision, if unfavorable, to the secretary of the treasury.
Congress contemplated that these lands should be divided among front proprietors, by a surveyor on the ground, aided by his principal; these officers were bound to act according to their best judgment, and deoide as judges on the equities of these claimants; nor could the courts of justice interfere to control their acts, if they were honestly performed; the contrary of which is not alleged in this case.
This construction of the law is altogether necessary, as great confusion and litigation would ensue if the judicial tribunals, state and federal, were permitted to interfere and overthrow the public surveys on no other ground than an opinion that they could have the work in the field better done, and divisions more equitably made, than the department of public lands could do.
It is ordered that the judgment of the supreme court of Louisiana be reversed.

Order.
This cause came on to be heard, on the transcript of the record, from the supreme court of the State of Louisiana, and was argued by counsel. On consideration whereof it is now here ordered, adjudged, and decreed by this court, that the decree of the said supreme court in this cause be, and the same is hereby, reversed, with costs; and that this cause be, and the same is hereby, remanded to the said supreme court, with directions for further proceedings to be had therein, in conformity to the opinion of this court, as to law and justice shall appertain.
NOTES
[*]  Mr. Justice Wayne, having been indisposed, did not sit in this cause.
