Is where the party has no principal challenge, but objects only some probable circumstances of suspicion, as acquaintance, and the like, the validity of which must be left to the determination of triors, whose office it is to decide whether the juror be favorable or unfavorable. 3 Bl. Comm. 303; 4 Bl. Comm. 353: Thompson v. State, 109 Ga. 272. 34 S. E. 579; State v. Sawtelle. 00 N. II. 4SS, 32 Atl. S31: State v. Baldwin. 1 Tread. Const. (S. C.) 292.