Privileged Communications

ter in which the party communicating has an interest, or in reference to which he has a duty, if made to a person having a corresponding interest or duty, although it contain criminatory matter which, without this privilege, would be slanderous and actionable. In Evidence. Communication which the law refuses, on grounds of public policy, to allow to be disclosed in evidence. The policy prohibiting such disclosure may be (1) political, as that restraining the disclosure of secrets of state, (2) Judicial, as that which prohibits the disclosure of proceedings in the jury room, (3) professional, as that which forbids the disclosure of statements 'by client to attorney, or (4) social, a^ that which restricts the disclosure of communications between husband and wife.

Best, Ev. § 578.