delivered the opinion of the court as follows: On the 3d day of February, 1784, the *84 plaintiff executed his bond to William Whetcroft, in the penal sum of 6,000/. to which there is a condition in the following words: u The condition of the above obligation is such, that if the said John Lewis shall well and truly pay to the said William Whet-croft the full sum of three thousand pounds, current money of Virginia, on or before the first day of January, 1785, then this obligation to be void. Provided, and it is to be understood, that in case the said Lewis, on application by the said Whetcroft to him,. in the town of Fredericksburg, on or after the said first day of January, shall pay unto the said William, or his attorney, the sum of three thousand pounds in officers’ certificates issued under an act of assembly passed November, 1781, for pay or arrearages of pay and depreciation, or shall well and truly pay the interest of six per centum from the date hereof, on- the said certificates, if not paid, and shall moreover annually and punctually pay the said six per cent, when applied to as before mentioned, in doing of which the condition of this bond is lischargeable by payment of the said three thousand pounds officers’ certificates; otherwise the bond shall have its full force and effect.

This bond was assigned to the defendant on the 3d of August, 1790, and an action at law was brought on it - in the name of the assignee in the circuit court of the United States for the district of Virginia, when judgment was rendered for the defendant.

On this judgment a writ of error has been sued out, and the plaintiff alleges that the same should be reversed, because the bond on which this action is brought is not assignable under the laws of Virginia, so as to enable the assignee, to prosecute at law in his own name. Other causes of error have been assigned, but the opinion of the court being with the plaintiff on the first point, it will not be necessary to take any notice of the objections which have bet made to the pleadings, or to the imperfect finding of the jury»

*85 A bond not being assignable at common law, the present question must turn altogether on the statutes of Virginia. It seems to have been for a long time doubted, after passing the act of 1748, c. 27. whether any but bonds conditioned to pay money or tobacco were assignable. That question was, however, at last settled by the court of appeals, in the case of Henderson v. Hepburn, in which it was decided, that a bond with a collateral condition w;as not, within the meaning of this act, assignable. With this decision the court not only feels no inclination to interfere, but thinks it a fair and just exposition of the acts which had then been passed on this'subject. The bonds intended by the legislature were most clearly such as were to become void on the payment'of a sum certain, and where no intervention or assessment of á jury was necessary. Bonds which require particular breaches to be assigned, damages on which were to be estimated or liquidated by a jury, do- not appear to have been contemplated.

It being then settled that bonds with collateral conditions were not assignable under the laws in force at the time of the making of this assignment, it only remains to. ascertain the true character of the condition of the bond on- which this action is brought.

Although by payment of 3,000/. on or before a certain day, the obligor, might have discharged himself from the penalty, it was part of the condition that, on the application of the obligee, by a certain day, a payment in certain certificates, which were not money, might be substituted. This, created an alternative by which the penalty might be discharged either by money or officers’ certificates; arid although the consent of both parties might be necessary to a payment in the latter way, still, as it made part of the written contract, the court cannot but perceive that, on a certain contingency, it was to be considered as a bond on which it might, as it did, become necessary to assign breaches and call in a jury to assess damages. If we look at the record, we shall find the *86 parties, their counsel and the jury treating it-as a bond of this description.

It is the opinion, therefore, of the court, that this bond was not assignable under the laws of Virginia, and that the judgment of. the circuit court for the district of Virginia must be reversed, and judgment on the verdict be arrested.