Where plaintiff, who was the sales agent for certain property, authorized defendant to sell the same, and agreed to divide the profits with him, any unfair dealing on defendant's part with plaintiff's principal, not affecting the sale, did not affect the plaintiff's right, as against defendant, to share in the profits of the sale, in the absence of participancy by plaintiff in defendant's wrong. Madler v. Pozorski, 124 Wis. 477, 102 N. W. 892. See also Sec. 520. Compare Sec. 522