Massachusetts Supreme Judicial Court November 23, 1887 (Commonwealth v. Hayes)

Field, J.

The provision of the Pub. Sts. c. 169, § 18, cl. 1, that “ neither husband nor wife shall be allowed to testify as to private conversations with each other,” is not confined to conversations upon subjects which are confidential in their nature, and it includes conversations between them relating to business done by one as agent of the other.