The statute of limitations was the only defense offered to this action, commenced on the 4th day of November, 1901, and predicated upon the following instrument in writing:

“$400. Langford, S. D., June 15th, 1893.

“Nov. 1st, 1895, after due, for ¡value received, I promise to pay to the order of E. W. Davis four hundred dollars, at Lang-ford, So. Dak., with interest from date until fully paid at the rate of ten per cent, per annum, payable annually on principal and all over due unpaid interest. If the said interest is not paid when due, it becomes part ¡of the principal and draw interest at 12 per cent, per annum until paid.

“The drawers and endorsers severally waive presentment of payment, protest and notice of protest andjnon-payment of this note, and I against the maker, and it is further stipulated and agreed that if suit is commenced on this note or if the same, is collected by an attorney, I will pay ten per cent, attorney’s fees upon the whole amount of principal and interest sued for and collected.

“James G. Brady,”

“Emma A. Brady.”

There was judgment for plaintiff, and the defendant appeals.

Unless the foregoing instrument is entitled to the usual *513days of grace, the action was not commenced within the six-year limitation, and the judgment appealed from must be reversed. Excluding Sundays and holidays from the computation three days of grace are allowed by section 2236 of the Revised Civil Code for the payment of all promissory notes, and .the exact question to be determined is whether this instrument is within the following statutory definition: “A promissory note is an instrument, negotiable in form, whereby the signer promises to pay a specified sum of money.” Rev. Civ. Code, § 2274. Prom date until paid this note and overdue interest will either.draw interest at the rate of 10 per cent, per annum, payable annually, or such unpaid interest will become a part ofjthe principal, and draw interest at 12 per cent, per annum. It cannot be determined with any degree of. accuracy whether overdue interest draws 10 per cent, per annum, payable 'annually, or 12 per cent, per year until paid. It is also ajdoubtful question whether the amount for which the note was given and the unpaid interest draws interest annually at 10 peí cent, per annum, or whether the principal, augmented by the first and' all subsequent installments of overdue and unpaid interest, draws interest at 12 per cent, until the entire amount is paid. According to the decisions of this court, such uncertainty destroys the negotiabilityhf the instrument. Hegeler v. Comstock, 1 S. D. 138, 45 N. W. 331, 8 L. R. A. 393; Merrill v. Hurley, 6 S. D. 592, 62 N. W. 958, 55 Am. St. Rep. 859; National Bank of Commerce v. Feeney, 12 S. D. 156, 80 N. W. 186, 46 L. R. A. 732, 76 Am. St. Rep. 594. As days of grace apply only to instruments negotiable in form, this action, when commenced, was barred by the statute of limitations.

*514The judgment appealed from is reversed, with the direction that the complaint be dismissed.