Acting as judge, Arguello asks permission of virrey to visit San Buenaventura to put in prison and question Castaneda, who is accused of assaulting and drawing arms against mission's Head of escort, Olivera. Description of incident and Arguello's interrogations of various soldiers that were present; includes their accounts of incident. Discussion of Arguello's punishment--a transfer and termination of salary. Includes personal description of Castaneda. (J. Hiller, nov, 1988)