6. A judge is not competent as a witness in a cause trying before him, for this, among other reasons, that he can hardly be deemed capable of impartially deciding on the admissibility of his own testimony, or of weighing. it against that of another. a Martln s R, N. S. 312. Vide, Com. Dig. Courts, B 4, C 2, E 1, P 16 justices, 1 1, 2, and 3; 14 Vin. Ab. 573; Bac. Ab. Courts, &c., B; 1 Kent, Com. 291; Ayl. Parerg. 309; Story, Const. Index, h. t. See U. S. Dig. Courts, I, where will be found an abstract of various decisions relating to the appointment and powers of judges in different states. Vide Eguality; Incompetency.;