In an action for commissions for procuring a purchaser for land, the fact that defendant had other agents is immaterial, it not being contended that they had been instrumental in bringing about the sale. Rounds v. Alee, 116 Iowa, 345, 89 N. W. 1098; Goin v. Hess, 102 Iowa, 140, 71 N. W. 218; G. L. & H. J. Gross v. Tillinghast, 86 A. 721, 35 E. I. 298.