(1) In the case of Talley v. Coms. Ct. Jackson County, 175 Ala. 644, 39 South. 167, it was said“It was decided in the case of Matkin v. Marengo County, 137 Ala. 155, 34 South. 171, that the issuance by the authority of the commissioners’ court of interest-bearing warrants on the county treasurer, payable at a stated time in the future — ten years in that, case — for the amount of a debt contracted for the building of a. courthouse, was not the issuance of bonds by the county within the provisions of section 222 of the Constitution, and was within the competency of the court of county commissioners. We adhere to and reaffirm that ruling.”
In the recent case of Littlejohn v. Littlejohn, 195 Ala. 614, 71 South. 449, we again had occasion to consider a question of similar character, involving the issuance of interest-bearing warrants presentable and payable at a future specified date. We there stated that the question as to the regularity and validity of the-issuance of such warrants, payable at stated times in the future, to pay for public buildings, roads, and bridges, was settled many *378years ago in the case of Talley v. Jackson County, supra, and its predecessor, Matkin v. Marengo County, 137 Ala. 155, 34 South. 171.
There have doubtless been many investments in securities of this character rested upon these decisions. Indeed, the record in the instant case discloses that the contracts and the orders of the commissioners’ court of Shelby county makes special reference to the Talley Case. The ruling of that case must therefore be held to have become, so to speak, a rule of property, and to be now accepted as the settled law of this state.
(2) The contracts and warrants here involved find striking analogy to those in the case above cited, and come directly within the influence of these authorities. See, also, in this connection Bd. Rev. Covington County v. Merrill, 193 Ala. 521, 68 South. D71; Weeks v. Bymum, 158 Ala. 233, 48 South. 489; South. Ry. v. Cherokee County, 144 Ala. 579, 42 South. 66.
Under the provisions of section 133 of the Code the court of •county commissioners is empowered to erect courthouses and to levy a special tax for that purpose. Section 131 provides that the county buildings are to be erected and kept in order and repair at the expense of the county under the direction of said court, which Is authorized to make all necessary contracts for that purpose. This is not only the right of such court, but also its duty. — Long v. Shepherd, 159 Ala. 595, 48 South. 675. Section 138 gives the specific authority to levy and collect a special tax, not to exceed in any one year one-fourth of 1 per cent., for the payment of ■debts incurred in the erection, construction, or maintenance of public buildings, bridges, or roads, and provides that when such tax is collected, it shall be applied exclusively for- the purposes for which it was levied. To like effect is section 134. Section 2206 requires that when the tax collector collects any special taxes, he shall specify in the receipt given therefor the purposes for which it was levied and collected, and the succeeding section requires that such taxes be paid over by the collector to the county treasurer and be kept as a distinct fund. Section 2208 requires the treasurer to keep such special taxes separate from all other public funds and to keep a separate account thereof. The record here discloses that the warrants, the subject-matter of this litigation, were duly registered as claims against this special fund, and were prior claims thereon. — Section 211, Code 1907. The hoard of revenue of Shelby county succeeded the court of county *379commissioners. This board were given the same authority and assumed the same liabilities, and were governed by the same rules of law, so far as the question here involved is concerned, as the court of county commissioners. — Local Acts 1911, p. 154; Code-1907, § 2231. Under the provisions of section 215 of our Constitution and the Code provisions above referred to, the court of commissioners for the county of Shelby were authorized to levy the special tax of one-fourth of 1 per cent., to be used exclusively in the payment of the courthouse indebtedness. They had full power to enter into the contract and to agree to levy said special tax. This was so recognized in the Talley Case, supra, wherein the court said: “We need not pass upon the question as to the-competency of the commissioners’ court, when warrants are issued payable yearly for a number of years in the future, to levy in the outset a special tax for each of such years to raise money to meet the warrants maturing each year. It may be that the special levy should be made from year to year; but that concession would not give equity to this bill. If the levy beyond the current year is invalid, the fact would afford no ground for decreeing the invalidity of the contract for the erection of the courthouse and enjoining its execution; nor would a decree, annulling the levy as to the later, years, interfere with the carrying out of the contract, or avail complainants in any way, since the commissioners’ court would have the power, and, indeed, be under the duty, to make the necessary special levy year by year.”
The agreement entered into, therefore, was valid and binding upon the county. The law in force at the time of this contract became a part of the contract. It clearly appears that the parties-to the contract looked to the special county tax ordered to be levied, collected, and set apart for the payment thereof, and, indeed, that this special tax was pledged for that purpose.
We have concluded that under our decisions the commissioners’ court were authorized to make this contract. The remedy for its enforcement, by means of the special tax to be levied and collected each year, was a most material part of the contract and doubtless a controlling inducement to the contractor.
(3) After a number of years there was a change in the governing body of the county, from a court of commissioners to the present board of revenue, and consequently a change in the personnel of the officers. The board of revenue, it seems, concluded to levy this special tax for other and different purposes than. *380those for which it was formerly pledged, and have contracted, or propose to contract, a large indebtedness for the building of new bridges and the improvement of public roads, to be paid for out of this special tax, and have issued interest-bearing warrants for such purposes. In short, the effect of their action is to repudiate the agreement of the court of county commissioners that this special tax fund should be exclusively devoted to the payment of the courthouse debt for which it was pledged, and to divert the fund from that purpose to an entirely different one. It is insisted that this cannot be done, upon the theory that it would take away the power to enforce the contract, and therefore, by subsequent legislation, as it were, impair the obligation of the contract, contrary to the provisions of the federal and state Constitutions. We are of the opinion that this insistence is well supported by the authorities. In the case of Port of Mobile v. Watson, 116 U. S. 289, 6 Sup. Ct. 398, 29 L. Ed. 620, is the following language: “Therefore the remedies for the enforcement of such obligations assumed by a municipal corporation, which existed when the contract- was made, must be left unimpaired by the Legislature, or, if they are changed, a substantial equivalent must be provided. Where the resources for the payment of the bonds of a municipal corporation is the power of taxation existing when the bonds were issued, any law which withdraws or limits the taxing power and leaves no adequate means for the payment of the bonds is forbidden by the Constitution of the United States, and is null and void.”
The case of Von Hoffman v. City of Quincy, 4 Wall. 535, 18 L. Ed. 403, is referred to as the leading case upon this question among the federal authorities. The following from the opinion is of interest in this connection: “When the bonds in question were issued, there were laws in force which authorized and required the collection of taxes sufficient in amount to meet the interest, as it accrued from time to time, upon the entire debt. But for the act of the 14th of February, 1863, there would be no difficulty in enforcing them. The amount permitted to be collected by that act- will be insufficient; and it is not certain that anything will be yielded applicable to that object. To the extent of the deficiency the obligation of the contract will be impaired, and if there be nothing applicable, it may be regarded as annulled. A right without a remedy is as if it were not. For every beneficial purpose it may be said not to exist. It is well settled *381that a state may disable itself by contract from exercising its taxing power in particular cases. It is equally clear that where a state has authorized a municipal corporation to contract and to exercise the power of local taxation to the extent necessary to meet its engagements, the power thus give cannot be withdrawn until the contract is satisfied. The state and the corporation, in such cases, are equally bound. The power given becomes a trust which the donor cannot annul, and which the donee is bound to execute; and neither the state nor the corporation can any more impair the obligation of the contract in this way than in any other.”
The principles above announced have found frequent reiteration in the following, among other, cases: Wolff v. New Orleans, 103 U. S. 358, 26 L. Ed. 395; U. S. v. New Orleans, 98 U. S. 381, 25 L. Ed. 225; Louisiana v. New Orleans, 102 U. S. 203, 26 L. Ed. 132; Louisiana v. Pilsbury, 105 U. S. 278, 26 L. Ed. 1090. The same principle was fully recognized by this court in Coms. Ct. v. Rather, 48 Ala. 433, where it was said: “It is now the fixed and well-settled law of this country, that the law in force at the time a contract is entered into becomes a part of it, both as to its stipulations and also as to the remedy, which may be resorted to, to carry the stipulations into effect. And neither the law governing the stipulations nor the remedy can be so altered after the execution of the contract as to impair any rights, whether of remedy or otherwise, which grew out of the contract on the day it was made. The obligation of a contract extends not only to the stipulations, which the parties have agreed upon, but to the rights belonging to the remedy on the day the contract bears date. The mode of enforcement, the practice, may be altered, but not so as to impair the rights of the parties under the contract, as they existed at the date of its execution. * * * Then, there is no such thing as a lapse of the remedy which entered into the contract, for its enforcement at its execution. This lives as long as the contract itself, save in such case as the law declares, that unless it is resorted to within a certain period, it shall not be available at all. In jurisprudence, it is mere sophistry to speak of an obligation, without a remedy. The power to enforce the obligation is its legal virtue. When this is gone, there is nothing left upon which courts can act. New remedies may be added, and the former remedies may be left unimpaired, but where the right depends upon contract, the former remedies *382cannot be taken away, so as to affect injuriously the contract in its stipulations or in the duration or benefits of its remedies.— White v. Hart, 13 Wall. 646 (20 L. Ed. 685).”
(4) It is insisted that the question of levying the special tax and of the purpose for which the same shall be applied is a matter resting in the discretion of the board of revenue or commissioners’ court, and cannot be controlled by the writ of mandamus. We are of the opinion, however, that as the commissioners’ court had full power to enter into the contract and agree to levy this special tax for this particular purpose, and that as such agreement is valid and binding and a most material part of the contract, it became the legal duty of the court to levy the tax and have the money so collected appropriated to the purpose for which it was pledged. The contract being binding, the question passed beyond the field of discretion and became one of plain duty to carry out the agreement solemnly made. While it is true that the language of the Constitution, as well as of the statute, says that the commissioners’ court may levy the tax, yet, having bound themselves by valid agreement to levy the tax, the clear legal duty arises to conform to that agreement, and mandamus is the proper remedy. As was said in the case of Tarver v. Coms. Ct., 17 Ala. 531: “It is true the language of the act is that it shall be lawful for the commissioners’ court to levy a tax, etc.; but it is well settled that the word ‘may,’ or the words, ‘it may be lawful’ are preemptory when used in a statute, where the public or an individual has a right de jure, that the powers conferred by the act should be exercised. — Ex parte Simonton, 9 Port. 390 [33 Am. Dec. 320]; 1 Ver. 152; Neuburgh Turnpike Co. v. Miller, 5 John. Ch. 101, 113. The facts set forth in the petition, and which we are to consider as true, as they were demurred to, show that the petitioner has a legal right to require the commissioners’ court to levy and collect a tax sufficient to pay the amount due on the judgment, as well as such sum as the petitioner has paid, if any, on account of his individual liability as commissioner, incurred in the discharge of his duties as such. This is his legal right, and there is no other remedy by which it can be enforced; consequently a mandamus is the proper remedy.”
To the same effect is the case of Graham v. Tuscumbia, 146 Ala. 449, 42 South. 400.
We are fully persuaded, therefore, that the action of the board of revenue in diverting this special tax from the purposes for *383which it was pledged to other purposes is ineffective in so far as it affects the rights of these petitioners as it is practically a repudiation of a valid agreement, and an attempted destruction of the remedy for the enforcement of the payment of these obligations, existing at the time the same were contracted. The board of revenue is only required by the order from which this appeal is taken to levy for the year 1916 the special tax of one-fourth of 1 per cent., or so much thereof as may be sufficient to pay the principle and interest due in February, 1916, and to become due in February, 1917.
(5) We gather from the record that the special tax of one-fourth of 1 per cent, will yield a sum more than sufficient to pay the courthouse installments as they become due, and the surplus, if any, may, of course, be applied to the road or bridge indebtedness referred to herein. The fact that after the issuance of these courthouse warrants and the same had been registered as prior claims on this fund the board of revenue, in disregard of the previous agreement made by the court of county commissioners, issued other warrants for road and bridge purposes, payable to other parties, could have no effect upon the rights of these petitioners, who held the prior claim to the fund.
Subsequent contractors must have had knowledge of the priority of the petitioners’ claim, and considerations of this character can have no bearing upon their rights.
We have hot overlooked the cases, cited by appellants’ counsel, of Westminster Water Co. v. Mayor, 98 Md. 551, 56 Atl. 990, 64 L. R. A. 630, 103 Am. St. Rep. 433, and Gale v. Kalamazoo, 23 Mich. 344, 9 Am. Rep. 80, but we do not consider that they militate against the conclusion we have here reached.
The record before us discloses that no question was raised as to the validity of these warrants, nor as to the fact that the amounts evidenced thereby are justly due and unpaid. It clearly appears, also, that without recourse to this special tax the petitioners will be without remedy for the enforcement of these obligations. We have held as against the county treasurer, under the facts set out in the case of Farson v. Bird, supra, that mandamus would not lie, and that a summary judgment could not be recovered.
We have concluded that petitioners have a clear legal right, and they are without other remedy by which this right can be enforced. As was said in Tarver v. Coms. Ct., supra, where there *384is a legal right and “no other remedy by which it can be enforced, * * * mandamus is the proper remedy.”
The judgment of the court below will be affirmed.
Affirmed.
Anderson, C. J., and Mayfield, Somerville, and Thomas, JJ., concur.