Applicability.

Section 557.7 , except so far as declaratory of existing law, shall apply only to instruments executed on or after July 1, 1925, and to wills and codicils revived or confirmed by a will or codicil executed on or after said date. [C24, 27, 31, 35, 39, § 10047; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §557.8 ]