Mr. Justice Harlan

delivered the opinion of the court.

In the year 1879, William Hill, the testator of the defendants in error, obtained a judgment in the court below against the county of Scotland, Missouri, for the sum of $46,944, the amount of certain coupons of bonds bearing date September 1, 1870, and issued to the Missouri, Iowa and Nebraska Rail-, way Coinpany, a corporation created by the consolidation of the Alexandria and Nebraska City Railroad Company of Missouri (originally the Alexandria and Bloomfield Railroad Company) with the Iowa Southern Railway Company of Iowa. Tim bonds recited that they were issued under and pursuant to an order of the Scotland county court for subscription to the stock of the Missouri, Iowa and. Nebraska Railway Company, “ as authorized by an act of the general assembly of the State of Missouri, entitled £An act to incorporate the Alexandria and Bloomfield Railroad Company,5 approved February 9,' 1857.” Laws of Missouri, 1856-1857, 94.

*42 The consolidation above referred to took place under a general statute of Missouri, approved March 2, 1869, (Laws of Missouri, 1869, p. 75,) authorizing the consolidation of railroad companies in that State with companies owning connecting railroads in adjoining States. The fourth section of that act is as follows: “ Any such consolidated company shall be '(subject to all the liabilities, and bound by all the obligations, of the' company within this State, which may be thus con.solidated with one in the adjacent State, as fully as if such consolidation had not taken place, and shall be subject to the same duties and obligations to the State, and be entitled to the-same franchises and privileges under the laws of this State, as if the consolidation had not taken place.”

The tenth section of the act incorporating the Alexandria and Bloomfield Railroad Company provided : “ Said company shall, in all things, be subject to the same restrictions, and entitled to all the privileges, rights and immunities which were granted to the North Missouri Railroad Company by an act entitled ‘An act to incorporate the North Missouri Railroad Company,’ approved March 3, 1851, so far as the same are applicable to the company hereby created, as fully and completely as if the same were herein reenacted.” Among the rights and privileges thus acquired by the Alexandria and Bloomfield Company, and which passed to the consolidated company, are those enumerated in the fourteenth section of the act incorporating the North Missouri Railroad Company, in these words: “ It shall be lawful for the county court of any county in which any part of the route of said railroad may be, to subscribe to the stock of said company, and it may invest its funds in the stock of said company and issue the bonds of s.uch county to raise funds to pay the stock thus subscribed, and to take proper steps to protect the interests and .credit of the county.” Laws of Missouri, 1851, pp. 483, 486.

At the first trial of the action there was a verdict and judgment against'the county. That judgment was reversed,for error in excluding evidence offered in its behalf, and the case was . remanded for a new trial. Scotland County v. Hill, 112 U. S. 183, 185. At the next trial there was k. judgment *43 against the county for the above amount, which was affirmed by this court. Scotland County v. Hill, 132 U. S. 107.

. The present action was by information for a mandamus against the county court of Scotland County and the judges thereof, requiring the levy and collection of a tax for the payment of this judgment. The alternative mandamus recited the judgment, and the failure of the county to pay it, or by its proper officers to levy and collect a tax for its payment, and commanded the county court and the judges thereof to forthwith levy and cause to be collected upon all the real estate and personal property in the county subject to taxation a tax for the payment of the judgment, with interest and costs, including the costs of this proceeding, and to pay the same according to law.

■ To this mandamus the county court and its judges made a long return, the object, apparently, of the greater part of which was to reopen the questions involving the authority of the county to issue the bonds and coupons in question.. But the material parts of the return are as follows: “ Respondents aver that neither at the date of the execution of the coupons in relator’s judgment merged, nor at any period prior to said date, nor at the present time, was there or is there now any law in force in the State of-Missouri Requiring or authorizing the county court of Scotland County, ,'ih the State of Missouri, to levy any special tax upon the taxable property of or in said county, in the State of Missouri, for the purpose of paying the judgment in said relator’s writ described. Respondents-aver that they did at the May term, 1887, of the. county court of Scotland County, in'the State of Missouri, make and cause to be entered upon the records of said court, (as will fully appear from a duly certified copy of said order herewith filed, marked £ Exhibit A,’ and made part of this return,) an order levying upon all the^property, real or personal, subject to taxation for state purposes in said Scotland County, a. tax for county purposes of one-half of one per cent upon each and every one-hundred dollars of the assessed value of such property.” It was also averred in the feturnyt-hat during each year prior to 1887 similar levies had been made- by the. respondents' or- their pre *44 decessors, namely, one-half of one per cent upon each one hundred dollars of the assessed value of property in the county; ■that the judgment could only be paid out of taxes levied and assessed for county purposes; that there were no funds, at the time the return was made, with which to pay the judgment; and that respondents would violate the law of the State-jf they made a larger levy. A demurrer to the return was sustained, and the respondents electing to stand by their return, a judgment was entered in accordance with the prayer of the information. 82 Fed. Rep. 714:.

Certain questions, arising out of the subscription by Scotland County to the capital stock of the Missouri, Iowa and Nebraska Railway Company, and the issuing by its'county court of bonds in payment of such subscription, have beep closed by former adjudications. It has been heretofore determined that the power of the county, derived under the act df February 9, 1857, from the charter of the North Missouri Railroad Company,' to subscribe, without a previous vote of the people,, to the capital stock of the Alexandria and Bloomfield Railroad Company, was a privilege of that company, which, passed, by the above consolidation, to the Missouri, Iowa and Nebraska Railway Company; that the prohibition in the constitution of Missouri of 1865 against municipal subscriptions to the stock of, or of loans of credit to, companies, associations or corporations, without the previous assent of two-thirds of the qualified voters at a regular or special election, limited the future exercise of legislative power,' but did not take away any authority granted before that constitution went into operation; and that the subscription made by the county court was binding, and the bonds issued in payment thereof were valid. County of Scotland v. Thomas, 94 U. S. 682, 693, 694; County of Ralls v. Douglass, 105 U. S. 728; Ralls County Court v. United States, 105 U. S. 733, 734; Scotland County v. Hill, 132 U. S. 107, 111, and authorities there cited.

The only question, therefore, open for discussion in the present case is whether the tax which the order below required to be levied and collected, namely, a tax sufficient to pay Hill’s judgment, • with interest and costs, was authorized by,law. *45 •The contention of respondents is that when the bonds were issued September 1,1870, they had no gbwer','under tjhe laws of Missouri, to levy a tax in excess of one-half of one per cent; and, as in the year 1887, when this action was commenced, and in previous years, the levies made by them. and their predecessors in office were up to that limit, they were without power to make the additional levy required by the judgment in this case. The court below held that, under the laws of the State, when the bonds were negotiated the county court -had ample authority to levy such tax as was necessary to pay them. The question thus presented is within a narrow compass.

We have seen that the Alexandria and Bloomfield Railroad Company was invested with all the privileges, rights and immunities granted to the North Missouri Railroad Company, and that by the charter of the latter company .the county court of any county making a subscription to its stock, was authorized to issue bonds to raise funds to pay for the stock subscribed,. “ and to take proper steps to protect the interest and" credit of the county.” This power of,the county court was a right and privilege of the company in whose behalf it was to be exercised. Now, was not the power “ to protect the interest and credit of the county,” in respect to bonds it had legally issued for stock, a power to levy and e'pllect ft, tax sufficient to pay the bonds and the interest accruing thereon ? This question was answered in the affirmative in Ralls County v. United States, 105. U. S. 733, 735, 736. That was a proceeding by mandamus to compel the county court to pay a judgtnent rendered against Ralls County,Missouri, for the interest (lue .on bonds issued by that county inpayment of a subscription to"the stock of the St- Louis and Keokuk Railroad Company, whose charter-provided (a£ did that,of,..the Alexandria and Bloomfield Railroad Company)-that it should “be lawful.for the county court of any county in which any part of the route, of said railroad may bé, tó subsferibe do the stock bf said company,” “ and issue the bonds of stick equnty to raise funds to pay the stock thus subscribed, and to take proper stfeps, to protect the interest and credit of Ahe;. county.” . Laws of Missouri, 1856-7, pp:-125,132, *46 § 29. In that case, as in this, the county court insisted that-its power of taxation was limited to the levy of an annual tax of one-half of one per cent on the taxable property in the county, and, as that amount of tax had been levied at the times provided by law, the duty of the court had been fully performed. ' On the other side if was contended that if the county funds were not sufficient to pay the judgment the county court should be required to levy and collect such tax as was necessary for that purpose. This court, speaking by Chief Justice Waite, held that the creditor was entitled to any fund that could be lawfully raised by the county to pay the judgment; that the coupons carried with them into the judgment .all the remedies which in law formed a part of their - contract obligations; that “when authority is granted by the legislative ' branch of the government to a municipality, or a subdivision of a State, to contract an extraordinary debt by tb.e issue of .negotiable securities, the power to levy taxes sufficient to meet,_ at maturity,- the obligation to be incurred, is conclusively implied, unless the law -which confers the authority, or some general law; in force at the time, clearly manifests a contrary legislative intention. The power to tax is necessarily an ingredient of such a power to contract; as, ordinarily,-political' bodies can only meet their pecuniary .obligations through the instrumentality of taxation ” — citing Loan Association v. Topeka, 20 Wall. 655, and United States v. New Orleans, 98 U. S. 381. After referring to and distinguishing United States v. County of Macon, 99 U. S. 582, in which it appeared that the authority of the municipality to contract'was burdened with a special limitation upon its power of taxation, the court proceeded: “In¿he.present"case there is no such special limitation. ■ The defence rests entirely on the power to' tax to ‘ defray the expenses of the county,’ which it has always been the policy of the State to restrict. The county court was, however, not only authorized* to issue bonds, but to £ take proper steps to protect the interest and credit of the county.’ If would, seem as though nothing more was needed. As the commercial credit of the county, in respect to its negotiable bonds, could only be protected, under ordinary circumstances, *47 by the prompt payment of both principal and interest, at maturity, and there is nothing to show that payment was to be made in any other way than through taxation, it necessarily' follows that power to tax to meet the payment was one of the essential elements of the power to protect the credit. If what the law requires to be done can only be done through taxation, then taxation is authorized to the extent that may be needed, unless it is otherwise expressly declared. The-power to tax in' such cases is not an implied power, but a duty growing out of the power to contract. The one power is as much express as the other. Here it seems to have been understood by the legislature that the ordinary taxes might not be enough to enable the county to meet the extraordinary obligation that was to be incurred, and so, without placing any restriction on the amount to be raised, the county court was expressly authorized to do all that wras necessary to protect the credit of the county.! . . . The subscription "was paid by the bonds; but the obliga-j tion to pay the bonds, principal and interest, when they man .tured was legally-substituted.”

All that was said in that case is applicable to the present " case,, and places beyond question the power and duty of the county court of Scotland to levy such tax as may be sufficient to pay the judgment obtained by Hill, with interest and costs.

Judgment affirmed.