Okla. Stat. tit. 84, § 84-112: When intent to revoke expressed

If the instrument by which an alteration is made in the

testator's interest in a thing previously disposed of by his will,

expresses his intent that it shall be a revocation, or if it

contains provisions wholly inconsistent with the terms and nature of

the testamentary disposition, it operates as a revocation thereof,

unless such inconsistent provisions depend on a condition or

contingency, by reason of which they do not take effect. R.L. 1910,

Sec. 8369.