Whether the services performed by plaintiff in finding a purchaser were rendered with the mutual understanding that they were to be paid for, should have been submitted by the jury. Armstrong v. Ft. Edward, 159 N. Y. 315, 53 N. E. 1116; Darling v. Howe, 14 N. Y. S. 561, 60 Hun, 578; Bullock v. Menninger (Ky. Ct. App. '10), 125 S. W. 256; Piper v. Allen, 219 S. W. 98,

- Mo. App. - .