delivered the opinion of the court.
The facts of this case, so far as they are needed to exhibit the question presented by the writ of error, are very few. The defendant, on and prior to Feb. 28, 1868, was a lawfully organized and existing county of the State of Illinois, through which was located the railroad of the Illinois Southeastern Railway Company, a company incorporated on the 25th of February, 1867. The county was authorized by the legislature of the State to donate to the railroad company, as a bonus or inducement towards the building of the railroad, any sum not exceeding $100,000, and was authorized to order the jclerk of the county court, or board of supervisors of the coilhty, to issue county bonds to the amount donated, and deliver them to the company, provided that no donation exceeding $50,000 should be made unjil after the question of such larger donation should have been submitted to the legal voters of the county, at an élection called and conducted in the usual manner.’ The statute further enacted, that if a majority of the ballots cast at such an election should be in favor of- a donation, it should be the duty of the county court or board of supervisors to donate some amount, not less than $50,000 nor more than $100,000, to the company, and to order the issue of county bonds for the amount so donated.
On the 28th of February, 1868, in pursuance of these statutory enactments, an election of the legal voters of - the county was held to determine whether the county would donate *49 $100,000 of its bonds in aid.of tbe said road, and tbe election resulted' in authorizing their issue. The bonds were accordingly issued by the county judge and county clerk, under the direction of the county court, and they were delivered to the railroad company on the 6th or 8th of October, 1870, after the conditions precedent to their delivery had been fulfilled. The plaintiff is the holder of coupons belonging to said issue, having purchased them before due, in the usual course of his business.
The defence set up is, in substance, that in consequence of a provision in the new Constitution of the State, which came into force July 2, 1870, the authority to issue and deliver the bonds had ceased to exist before the issue was made. The section of the Constitution relied upon is in the following words: “ No. county, city, town, township, or other municipality shall ever become subscriber to the capital stock of any railroad or private corporation, or make donation to, or loan its credit in aid of such corporation: Provided, however, that the adoption of this article shall not be construed as affecting the right of any such municipality to make such subscriptions, where the same have been authorized under existing laws, by a vote of- the people of such municipalities, prior to such adoption.”
The question presented, then, is whether a donation to a railroad company, by a county empowered by the legislature to make such a donation, when approved by a majority of the legal voters of the county at an election held for that purpose, is forbidden by this clause of the Constitution, if it was authorized under laws then existing by a vote of the people of the county prior to the adoption of the Constitution? What should be the answer to the question depends upon the construction that must be given to the section thus quoted. Are donations, thus authorized by a popular vote, within the prohibition, or are they excepted out of it by the proviso ?
In
Town of Concord
v.
Portsmouth Savings Bank
(
*52
In view of all this, ought ■ this court to adhere to the construction we gave to the State Constitution in ignorance of the fact that the Supreme Court of' the State had previously construed it in a different manner ? At a very early day it was announced that in cases depending upon the Constitution or statutes of a State this court would adopt the construction of the statutes or Constitution given by the courts of the State, when that construction could be ascertained.
Polk’s Lessee
v.
Wendell,
Such has been our general rule of decision. Undoubtedly, some exceptions to it have been recognized. One of them is, that when the highest court of a State has given different constructions to its Constitution and laws, at different times, and rights have been acquired under the former construction, we have followed that, and disregarded the latter. The present case is .not within that exception, for there have been no conflicting interpretations by the State court of the section of the Constitution we are now called upon to construe. And we are not constrained to refuse following the decision of the State court in order to save rights acquired on the faith of our ruling in
Town of Concord
v.
Portsmouth Savings Bank. Groves
v.
Slaughter
(
Subsequently, the provision of the Constitution of Mississippi was brought before the courts of the State, and it was settled by the highest tribunals that it did of itself, and without any legislative enactment, prohibit the introduction of slaves as merchandise, and for sale, and render all contracts for the sale of slaves, made after May 1, 1833, illegal and void.
Rowan
v.
Runnels
(
That case is totally unlike the present. The bonds in question now were issued in October, 1870. In 1874, the highest court of the State decided that such bonds could be lawfully issued, and that they were not forbidden by the Constitution. It was, therefore, conclusively settled more than a year before
Town of Concord
v.
Portsmouth Savings Bank
was decided by us, what the meaning of the Constitution was. We are now asked to decline following the construction given and since recognized by the State court, and to adhere to that adopted by us in ignorance of the prior judgment of the State court, and that not, as in
Rowan
v.
Runnels,
to uphold contracts, but to strike them down, though they were made in accordance with the settled law of the State. We recognize the importance of the rule
stare decisis.
We recognize also the other rule, that this court will follow the decisions of State courts, giving a construction to their constitutions and laws, and more especially when those decisions have become rules of property in the States, and when contracts must have been made, or purchases in reliance upon them. And it has been held that this court will abandon its former decision construing a State statute, if the State courts have subsequently given to it a different construction. In
Green
v.
Neal’s Lessee
(
The judgment of the Circuit Court will be reversed, and the record remitted with instructions to give judgment for the plaintiff below on the findings made; and it is
So ordered,
