Performance and breach of a contract are questions which necessarily arise after the contract has been entered into. Accordingly, the parol evidence rule does not prevent a party to a contract from showing such breach as amounts to a dis charge; such as failure of consideration,1 as of a promissory note not in the hands of a bona fide holder.2 So the parol evidence rule has no application to evidence tending to show payment.3

5 Harding v. Glucose Co., 182 111. 551; 74 Am. St. Rep. 189; 55 N. E. 577.

6 Detroit Salt Co. v. Salt Co., -Mich. -; 96 N. W. 1.

7 Clemons Electrical Mfg. Co. v. Walton, 173 Mass. 286; 52 N. E. 132; 53 N. E. 820.

8 Hangen v. Hachemeister, 114 N. Y. 566; 11 Am. St. Rep. 691; 5 L. R. A. 137; 21 N. E. 1046.

9Irvin v. Irvin, 169 Pa. St. 529; 29 L. R. A. 292.

1 Fisher v. Andrews, 94 Md. 46; 50 Atl. 407.

2 Beyerstedt v. Mill Co., 49 Minn. 1; 51 N. W. 619.

3 Bruce v. Pearsall, 59 N. J. L. 62; 34 Atl. 982.

4 Bruce v. Pearsall, 59 X. J. L. 62; 34 Atl. 982.