It is claimed on behalf of the plaintiff in error that by the law of Louisiana the pre-existing liability of Pritchard as surety for the railroad company would be a valid consideration to support the promise of indemnity, notwithstanding Pritchard's liability had been incurred without any previous request from the defendant below. This claim is not controverted, and is fully supported by the citations from the Civil Code of Louisiana of 1870, arts. 1893-1960, and the decisions of the supreme court of that state. Flood v. Thomas, 5 Martin, (N. S.) 562; N. O. Gas Co. v. Paulding, 12 Rob. 378; N. O. & C. R. Co. v. Chapman, 8 La. Ann. 98; Keane v. Goldsmith, 12 La. Ann. 560. In the case last mentioned it is said that 'the contract is, in its nature, one of personal warranty, recognized by articles 378 and 379 of the Code of Practice.' And it was there held that a right of action upon the bond of indemnity accrued to the obligee when his liability became fixed as surety by a final judgment, without payment on his part, it being the obligation of the defendants upon the bond of indemnity to pay the judgment rendered against the surety, or to furnish him the money with which to pay it.

The single question presented by the record, therefore, is whether the law of New York, or that of Louisiana, defines and fixes the rights and obligations of the parties. If the former applies, the judgment of the court below is correct; if the latter, it is erroneous. The argument in support of the judgment is simple, and may be briefly stated. It is that New York is the place of the contract, both because it was executed and delivered there, and because no other place of performance being either designated or necessarily implied, it was to be performed there; wherefore, the law of New York, as the lex loci contractus, in both senses being lex loci celebrationis and lex loci solutions, must apply to determine not only the form of the contract, but also its validity. On the other hand, the application of the law of Louisiana may be considered in two aspects, as the lex fori, the suit having been brought in a court exercising jurisdiction within its territory and administering its laws, and as the lex loci solutionis, the obligation of the bond of indemnity being to place the fund for payment in the hands of the surety, or to repay him the amount of his advance, in the place where he was bound to discharge his own liability.

It will be convenient to consider the applicability of the law of Louisiana, first, as the lex fori, and then as the lex loci solutionis.

1. The lex fori.

The circuit court of the United States sitting in the district of Louisiana, in a cause like the present, in which its jurisdiction depends on the citizenship of the parties, adjudicates their rights precisely as would a tribunal of the state, according to the laws of the state; so that, in that sense, there is no question as to what law must be administered. But in case of contract the foreign law may, by the act and will of the parties, have become part of their agreement, and in enforcing this, the law of the forum may find it necessary to give effect to a foreign law, which, without such adoption, would have no force beyond its own territory.

This, upon the principle of comity, for the purpose of promoting and facilitating international intercourse, and within limits fixed by its own public policy, a civilized state is accustomed and considers itself bound to do; but, in doing so, nevertheless adheres to its own system of formal judicial procedure and remedies. And thus the distinction is at once established between the law of the contract, which may be foreign, and the law of the procedure and remedy, which must be domestic and local. In respect to the latter the foreign law is rejected; but how and where to draw the line of precise classification it is not always easy to determine.

The principle is that whatever relates merely to the remedy and constitutes part of the procedure is determined by the law of the forum, for matters of process must be uniform in the courts of the same country; but whatever goes to the substance of the obligation and affects the rights of the parties, as growing out of the contract itself or inhering in it or attaching to it, is governed by the law of the contract.

The rule deduced by Mr. Wharton (Confl. Laws, § 401) as best harmonizing the authorities and effecting the most judicious result, and which was cited approvingly by Mr. Justice HUNT in Scudder v. Union Nat. Bank, 91 U. S. 411, is that 'obligations in respect to the mode of their solemnization are subject to the rule locus actum regit; in respect to their interpretation, to the lex loci contractus; in respect to the mode of their performance, to the law of the place of their performance. But the lex fori determines when and how such laws, when foreign, are to be adopted, and, in all cases not specified above, supplies the applicatory law.' This, it will be observed, extends the operation of the lex fori beyond the process and remedy, so as to embrace the whole of that residuum which cannot be referred to other laws. And this conclusion is obviously just, for whatever cannot, from the nature of the case, be referred to any other law, must be determined by the tribunal having jurisdiction of the litigation, according to the law of its own locality.

Whether an assignee of a chose in action shall sue in his own name or that of his assignor, is a technical question of mere process, and determinable by the law of the forum; but whether the foreign assignment, on which the plaintiff claims, is valid at all, or whether it is valid against the defendant, goes to the merits and must be decided by the law in which the case has its legal seat. Whart. Confl. Laws, §§ 735, 736. Upon that point Judge KENT, in the case of Lodge v. Phelps, 1 Johns. Cas. 139; 2 Caines, Cas. in Error, 321, said: 'If the defendant has any defense authorized by the law of Connecticut, let him show it, and he will be heard in one form of action as well as in the other.'

It is to be noted, however, as an important circumstance, that the same claim may sometimes be a mere matter of process, and so determinable by the law of the forum, and sometimes a matter of substance going to the merits, and therefore determinable by the law of the contract. That is illustrated in the application of the defense arising upon the statute of limitations. In the courts of England and America, that defense is governed by the law of the forum, as being a matter of mere procedure; while in continental Europe, the defense of prescription is regarded as going to the substance of the contract, and therefore is governed by the law of the seat of the obligation. 'According to the true doctrine,' says Savigny, (Private Int. Law, by Guthrie, 201,) 'the local law of the obligation must determine as to the term of prescription, not that of the place of the action; and this rule, which has just been laid down in respect to exceptions in general, is further confirmed, in the case of prescription, by the fact that the various grounds on which it rests stand in connection with the substance of the obligation itself.' In this view Westlake concurs, (Private Int. Law, Ed. 1858, § 250,) who puts it, together with the case of a merger in another cause of action, the occurrence of which will be determined by the law of the former cause, (Bryans v. Dunseth, 1 Martin, N. S. 412,) as equal instances of the liability to termination inherent by the lex contractus. But notwithstanding the contrary doctrine of the courts of England and this country, when the statute of limitations of a particular country not only extinguishes the right of action, but the claim or title itself, ipso facto, and declares it a nullity after the lapse of the prescribed period, and the parties have been resident within the jurisdiction during the whole of that period, so that it has actually and fully operated upon the case, it must be held, as it was considered by Justice STORY, (Confl. Laws, § 582,) to be an extinguishment of the debt, wherever an attempt might be made to enforce it. That rule, as he says, has the direct authority of this court in its support in Shelby v. Guy, 11 Wheat. 361-371; its correctness was recognized by Chief Justice TINDAL in Huber v. Steiner, 2 Bing. N. C. 202-211; and it is spoken of by Lord BROUGHAM in Don v. Lippmann, 5 Clark & F. 16, as 'the excellent distinction taken by Mr. Justice STORY.' Walworth v. Routh, 14 La. Ann. 205. The same principle was applied by the supreme court of Ohio in the case of the P., C. & St. L. Ry. Co. v. Hine's Adm'x, 25 Ohio St. 629, where it was held that under the act requiring compensation for causing death by wrongful act, neglect, or default, which gave a right of action, provided such action should be commenced within two years after the death of such deceased person, the proviso was a condition qualifying the right of action, and not a mere limitation on the remedy. Bonte v. Taylor, 24 Ohio St. 628.

The principle that what is apparently mere matter of remedy in some circumstances, in others, where it touches the substance of the controversy, becomes matter of right, is familiar in our constitutional jurisprudence in the application of that provision of the constitution of the United States which prohibits the passing by a state of any law impairing the obligation of contracts; for it has been uniformly held that 'any law which in its operation amounts to a denial or obstruction of the rights accruing by a contract, though professing to act only on the remedy, is directly obnoxious to the prohibition of the constitution.' McCracken v. Hayward, 2 How. 612; Cooley, Const. Lim. 285. Hence it is that a vested right of action is property in the same sense in which tangible things are property, and is equally protected against arbitrary interference. Whether it springs from contract or from the principles of the common law, it is not competent for the legislature to take it away. A vested right to an existing defense is equally protected, saving only those which are based on informalities not affecting substantial rights, which do not touch the substance of the contract and are not based on equity and justice. Cooley, Const. Lim. 362-369.

The general rule, as stated by Story, (Confl. Laws, § 331,) is that a defense or discharge, good by the law of the place where the contract is made or is to be performed, is to be held of equal validity in every other place where the question may come to be litigated. Thus infancy, if a valid defense by the lex loci contractus, will be a valid defense everywhere. Thompson v. Ketcham, 8 Johns. 146; Male v. Roberts, 3 Esp. 163. A tender and refusal, good by the same law, either as a full discharge or as a present fulfillment of the contract, will be respected everywhere. Warder v. Arell, 2 Wash. (Va.) 282. Payment in paper-money bills, or in other things, if good by the same law, will be deemed a sufficient payment everywhere. 1 Brown, Ch. 376; Searight v. Calbraith, 4 Dall. 325; Barstsch v. Atwater, 1 Conn. 409. And, on the other hand, where a payment by negotiable bills or notes is, by the lex loci, held to be conditional payment only, it will be so held even in states where such payment under the domestic law would be held absolute. So, if by the law of the place of a contract equitable defenses are allowed in favor of the maker of a negotiable note, any subsequent indorsement will not change his rights in regard to the holder. The latter must take it cum onere. Ory v. Winter, 16 Martin, 277; Evans v. Gray, 12 Martin, 475; Chartus v. Caines, 16 Martin, 1; Story, Confl. Laws, § 332.

On the other hand, the law of the forum determines the form of the action, as whether it shall be assumpsit, covenant, or debt. Warren v. Lynch, 5 Johns. 239; Andrews v. Herriot, 4 Cow. 508; Trasher v. Everhart, 3 Gill. & J. 234; Adams v. Ker, 1 Bos. & P. 360; Bank of U. S. v. Donally, 8 Pet. 361; Douglas v. Oldham, 6 N. H. 150. In Le Roy v. Beard, 8 How. 451, where it was held that assumpsit, and not covenant, was the proper form of action brought in New York upon a covenant executed and to be performed in Wisconsin, and by its laws sealed as a deed, but which in the former was not regarded as sealed, it was said by this court that it was so decided 'without impairing at all the principle that in deciding on the obligation of the instrument as a contract, and not the remedy on it elsewhere, the law of Wisconsin, as the Lex loci contractus, must govern.' It also regulates all process, both mesne and final. Ogden v. Saunders, 12 Wheat. 213; Mason v. Haile, Id. 370; Beers v. Haughton, 9 Pet. 359; Von Hoffman v. Quincy, 4 Wall. 553. It also may admit, as a part of its domestic procedure, a set-off, or compensation of distinct causes of action between the parties to the suit, though not admissible by the law of the place of the contract. Story, Confl. Laws, § 574; Gibbs v. Howard, 2 N. H. 296; Ruggles v. Keeler, 3 Johns. 263. But this is not to be confounded, as it was in the case of Second Nat. Bank of Cincinnati v. Hemingray, 31 Ohio St. 168, with that of a limited negotiability, by which the right of set-off between the original parties is preserved as part of the law of the contract, notwithstanding an assignment. The rules of evidence are also supplied by the law of the forum. Wilcox v. Hunt, 13 Pet. 378; Yates v. Thompson, 3 Clark & F. 544; Bain v. Whitehaven, etc., Ry. Co. 3 H. of L. Cas. 1; Don v. Lippmann, 3 Clark & F. 1.

In Yates v. Thompson, supra, it was decided by the house of lords that in a suit in a Scotch court, to adjudge the succession to personalty of a decedent domiciled in England, where it was admitted that the English law governed the title, nevertheless it was proper to receive in evidence, as against a will of the decedent, duly probated in England, a second will which had not been proved there, and was not receivable in English courts as competent evidence, because such a paper, according to Scottish law, was admissible. In the case of Hoadley v. Northern Transp. Co. 115 Mass. 304, it was held that if the law of the place, where a contract signed only by the carrier is made for the carriage of goods, requires evidence other than the mere receipt by the shipper to show his assent to its terms, and the law of the place where the suit is brought presumes conclusively such assent from acceptance without dissent, the question of assent is a question of evidence, and is to be determined by the law of the place where the suit is brought. In a suit in Connecticut against the indorser on a note made and indorsed in New York, it was held that parol evidence of a special agreement, different from that imputed by law, would be received in defense, although by the law of the latter state no agreement different from that which the law implies from a blank indorsement could be proved by parol. Downer v. Chesebrough, 36 Conn. 39. And upon the same principle it has been held that a contract, valid by the laws of the place where it is made, although not in writing, will not be enforced in the courts of a country where the statute of frauds prevails, unless it is put in writing. Leroux v. Brown, 12 C. B. 801. But where the law of the forum and that of the place of the execution of the contract coincide, it will be enforced, although by the law of the place of performance required to be in writing, as was the case of Scudder v. Union Nat. Bank, 91 U. S. 406, because the form of the contract is regulated by the law of the place of its celebration, and the evidence of it by that of the forum.

The case of Williams v. Haines, 27 Iowa, 251, was an action upon a note executed in Maryland, and, so far as appears from the report, payable there, where the parties thereto then resided, and which was a sealed instrument, according to the laws of that state, in support of which those laws conclusively presumed a valid consideration. By the laws of Iowa, to such an instrument the want of consideration was allowed to be proved as a defense. It was held by the supreme court of that state, in an opinion delivered by Chief Justice DILLON, that the law of Iowa related to the remedy merely, without impairing the obligation of the contract, and, as the lex fori, must govern the case. He said: 'Respecting what shall be good defenses to actions in this state, its courts must administer its own laws and not those of other states. The common-law rules do not so inhere in the contract as to have the portable quality ascribed to them by the plaintiff's counsel, much less can they operate to override the plain declaration of the legislative will.' The point of this decision is incorporated by Mr. Wharton into the text of his Treatise on the Conflict of Laws, § 788, and the case itself is referred to in support of it. He deduces the same conclusion from those cases, already referred to, which declare that assumpsit is the only form of action that can be brought upon an instrument which is not under seal, according to the laws of the forum, although by the law of the place where it was executed, or was to be performed, it would be regarded as under seal, in which debt or covenant would lie, on the ground that a plea of want or failure of consideration is recognized as a defense in all actions of assumpsit. Whart. Confl. Laws, § 747.

It the proposition be sound, its converse is equally so; and the law of the place where a suit may happen to be brought may forbid the impeachment of a contract, for want of a valid consideration, which, by the law of the place of the contract, might be declared invalid on that account.

We cannot, however, accept this conclusion. The question of consideration, whether arising upon the admissibility of evidence or presented as a point in pleading, is not one of procedure and remedy. It goes to the substance of the right itself, and belongs to the constitution of the contract. The difference between the law of Louisiana and that of New York, presented in this case, is radical, and gives rise to the inquiry, what, according to each, are the essential elements of a valid contract, determinable only by the law of its seat; and not that other, what remedy is provided by the law of the place where the suit has been brought to recover for the breach of its obligation.

On this point, what was said in the case of The Gaetano and Maria, L. R. 7 Prob. Div. 137, is pertinent. In that case the question was whether the English law, which was the law of the forum, or the Italian law, which was the law of the flag, should prevail, as to the validity of a hypothecation of the cargo by the master of the ship. It was claimed that because the matter to be proved was, whether there was a necessity which justified it, it thereby became a matter of procedure, as being a matter of evidence. Lord Justice BRETT said: 'Now, the manner of proving the facts is matter of evidence, and, to my mind, is a matter of procedure, but the facts to be proved are not matters of procedure; they are matters with which the procedure has to deal.'

It becomes necessary, therefore, to consider the applicability of the law of Louisiana as——

2. The lex loci solutionis.

The phrase lex loci contractus is used, in a double sense, to mean, sometimes, the law of the place where a contract is entered into; sometimes, that of the place of its performance. And when it is employed to describe the law of the seat of the obligation, it is, on that account, confusing. The law we are in search of, which is to decide upon the nature, interpretation, and validity of the engagement in question, is that which the parties have, either expressly or presumptively, incorporated into their contract as constituting its obligation. It has never been better described than it was incidentally by Chief Justice MARSHALL in Wayman v. Southard, 10 Wheat. 48, where he defined it as a principle of universal law—'the principle that in every forum a contract is governed by the law with a view to which it was made.' The same idea had been expressed by Lord MANSFIELD in Robinson v. Bland, 2 Burr. 1077. 'The law of the place,' he said, 'can never be the rule where the transaction is entered into with an express view to the law of another country, as the rule by which it is to be governed.' And in Lloyd v. Guibert, L. R. 1 Q. B. 120, in the court of exchequer chamber, it was said that 'it is necessary to consider by what general law the parties intended that the transaction should be governed, or, rather, by what general law it is just to presume that they have submitted themselves in the matter.' Le Breton v. Miles, 8 Paige, 261.

It is upon this ground that the presumption rests that the contract is to be performed at the place where it is made, and to be governed by its laws, there being nothing in its terms, or in the explanatory circumstances of its execution, inconsistent with that intention. So, Phillimore says, (4 Int. Law. 469:) 'It is always to be remembered that in obligations it is the will of the contracting parties, and not the law, which fixes the place of fulfillment—whether that place be fixed by express words or by tacit implication—as the place to the jurisdiction of which the contracting parties elected to submit themselves.' The same author concludes his discussion of the particular topic (4 Int. Law, § 654, pp. 470-471) as follows: 'As all the foregoing rules rest upon the presumption that the obligor has voluntarily submitted himself to a particular local law, that presumption may be rebutted, either by an express declaration to the contrary, or by the fact that the obligation is illegal by that particular law, though legal by another. The parties cannot be presumed to have contemplated a law which would defeat their engagements.' This rule, if universally applicable,—which perhaps it is not,—though founded on the maxim, ut res magis valeat quam pereat would be decisive of the present controversy, as conclusive of the question of the application of the law of Louisiana, by which alone the undertaking of the obligor can be upheld. At all events, it is a circumstance highly persuasive in its character of the presumed intention of the parties, and entitled to prevail, unless controlled by more express and positive proofs of a contrary intent. It was expressly referred to as a decisive principle in Bell v. Packard, 69 Me. 111, although it cannot be regarded as the foundation of the judgment in that case. Milliken v. Pratt, 125 Mass. 374.

If now we examine the terms of the bond of indemnity, and the situation and relation of the parties, we shall find conclusive corroboration of the presumption that the obligation was entered into in view of the laws of Louisiana.

The antecedent liability of Pritchard, as surety for the railroad company on the appeal bond, was confessedly contracted in that state, according to its laws, and it was there alone that it could be performed and discharged. Its undertaking was that Pritchard should, in certain contingencies, satisfy a judgment of its courts. That could be done only within its territory and according to its laws. The condition of the obligation, which is the basis of this action, is that McComb and Norton, the obligors, shall hold harmless and fully indemnify Pritchard against all loss or damage arising from his liability as surety on the appeal bond. A judgment was, in fact, rendered against him on it in Louisiana. There was but one way in which the obligors in the indemnity bond could perfectly satisfy its warranty. That was, the moment the judgment was rendered against Pritchard on the appeal bond, to come forward in his stead, and, by payment, to extinguish it. He was entitled to demand this before any payment by himself, and to require that the fund should be forthcoming at the place where otherwise he could be required to pay it. Even if it should be thought that Pritchard was bound to pay the judgment recovered against himself, before his right of recourse accrued upon the bond of indemnity, nevertheless he was entitled to be reimbursed the amount of his advance at the same place where he had been required to make it. So that it is clear, beyond any doubt, that the obligation of the indemnity was to be fulfilled in Louisiana, and, consequently, is subject, in all matters affecting its construction and validity, to the law of that locality.

This construction is abundantly sustained by the authority of judicial decisions in similar cases.

In Irvine v. Barrett, 2 Grant, (Pa.) Cas. 73, it was decided that where a security is given in pursuance of a decree of a court of justice, it is to be construed according to the intention of the tribunal which directed its execution, and, in contemplation of law, is to be performed at the place where the court exercises its jurisdiction; and that a bond given in another state, as collateral to such an obligation, is controlled by the same law which controls the principal indebtedness. In the case of Penobscot & K. R. Co. v. Bartlett, 12 Gray, 244, the supreme judicial court of Massachusetts decided that a contract made in that state to subscribe to shares in the capital stock of a railroad corporation established by the laws of another state, and having their road and treasury there, is a contract to be performed there, and is to be construed by the laws of that state. In Lanusse v. Barker, 3 Wheat. 146, this court declared that 'where a general authority is given to draw bills from a certain place, on account of advances there made, the undertaking is to replace the money at that place.'

The case of Cox v. U. S. 6 Pet. 172, was an action upon the official bond of a navy agent. The sureties contended that the United States were bound to divide their action, and take judgment against each surety only for his proportion of the sum due, according to the laws of Louisiana, considering it a contract made there, and to be governed in this respect by the law of that state. The court, however, said: 'But admitting the bond to have been signed at New Orleans, it is very clear that the obligations imposed upon the parties thereby looked for its execution to the city of Washington. It is immaterial where the services as navy agent were to be performed by Hawkins. His accountability for non-performance was to be at the seat of government. He was bound to account, and the sureties undertook that he should account, for all public moneys received by him, with such officers of the government of the United States as are duly authorized to settle and adjust his accounts. The bond is given with reference to the laws of the United States on that subject. And such accounting is required to be with the treasury department at the seat of government; and the navy agent is bound by the very terms of the bond to pay over such sum as may be found due to the United States on such settlement; and such paying over must be to the treasury department, or in such manner as shall be directed by the secretary. The bond is, therefore, in every point of view in which it can be considered, a contract to be executed at the city of Washington, and the liability of the parties must be governed by the rules of the common law.' This decision was repeated in Duncan v. U. S. 7 Pet. 436.

These cases were relied on by the supreme court of New York in the case of Kentucky v. Bassford, 6 Hill, 526. That was an action upon a bond executed in New York conditioned for the faithful performance of the duties enjoined by a law of Kentucky authorizing the obligees to sell lottery tickets for the benefit of a college in that state. It was held that the stipulations of the bond were to be performed in Kentucky, and that, as it was valid by the laws of that state, the courts of New York would enforce it, notwithstanding it would be illegal in that state.

The case of Boyle v. Zacharie, 6 Pet. 635, is a direct authority upon the point. There Zacharie and Turner were resident merchants at New Orleans, and Boyle at Baltimore. The latter sent his ship to New Orleans, consigned to Zacharie and Turner, where she arrived, and, having landed her cargo, the latter procured a freight for her to Liverpool. When she was ready to sail she was attached by process of law at the suit of certain creditors of Boyle, and Zacharie and Turner procured her release by becoming security for Boyle on the attachment. Upon information of the facts Boyle promised to indemnify them for any loss they might sustain on that account. Judgment was rendered against them on the attachment bond, which they were compelled to pay, and brought suit against Boyle in the circuit court for Maryland, upon his promise of indemnity, to recover the amount they had been compelled to pay. A judgment was rendered by confession in that cause, and a bill in equity was subsequently filed to enjoin further proceedings on it, in the course of which various questions arose among them whether the promise of indemnity was a Maryland or a Louisiana contract. Mr. Justice STORY, delivering the opinion of the court, said: 'Such a contract would be understood by all parties to be a contract made in the place where the advance was to be made, and the payment, unless otherwise stipulated, would also be understood to be made there;' 'that the contract would clearly refer for its execution to Louisiana.' The very point was also decided by this court in Bell v. Bruen, 1 How. 169. That was an action upon a guaranty written by the defendant in New York, addressed to the plaintiffs in London, the latter having made advances in the latter place of a credit to Thorn. The operative language of the guaranty was 'that you may consider this, as well as any and every other credit you may open in his favor, as being under my guaranty.' The court said: 'It was an engagement to be executed in England, and must be construed and have effect according to the laws of that country;' citing Bank of U. S. v. Daniel, 12 Pet. 54. As the money was advanced in England, the guaranty required that it should be replaced there, and that is the precise nature of the obligation in the present case. Pritchard could only be indemnified against loss and damage on account of his liability on the appeal bond, by having funds placed in his hands in Louisiana wherewith to discharge it, or by being repaid there the amount of his advance. To the same effect is Woodhull v. Wagner, Baldw. 296.

We do not hesitate, therefore, to decide that the bond of indemnity sued on was entered into with a view to the law of Louisiana as the place for the fulfillment of its obligation; and that the question of its validity, as depending on the character and sufficiency of the consideration, should be determined by the law of Louisiana, and not that of New York.

For error in its rulings on this point, consequently, the judgment of the circuit court is reversed, with directions to grant a new trial. New trial ordered.