748—Involuntary manslaughter. The unintentional killing of a sei by one engaged in an unlawful, but not once act. 4 Steph. Comm. oe —Involuntary payment. One obtained by fraud. oppression, or extortion, or to avoid the use of orce to coerce it, or to obtain the release of the paebgs or property from detention. Forage v. farathon Coanty. 52 Wis. 388, 9 N. W. 23. 38