§ 72-11-312, MCA
En. Sec. 493, p. 358, L. 1877; re-en. Sec. 493, 2nd Div. Rev. Stat. 1879; re-en. Sec. 493, 2nd Div. Comp. Stat. 1887; re-en. Sec. 1789, Civ. C. 1895; re-en. Sec. 4782, Rev. C. 1907; re-en. Sec. 7035, R.C.M. 1921; Cal. Civ. C. Sec. 1336; Field Civ. C. Sec. 598; re-en. Sec. 7035, R.C.M. 1935; R.C.M. 1947, 91-220.