One taken on a point not proper to decide the action; for example, if in an action of debt on bond, conditioned for the payment of ten dollars and fifty cents at a certain day, the defend ant pleads the payment of ten dollars according to the form of the condition, and the plaintiff, instead of demurring, tenders issue upon the payment, it is manifest that, whether this issue be found for the plaintiff or the defendant, it will remain equally uncertain whether the plaintiff is entitled to maintain his action, or not; for, in an action for the penalty of a bond, conditioned to pay a certain sum, the only material question is, whether the exact sum were paid or not, and the question of payment of a part is a question quite beside the legal merits.