A broker employed by the owner to find a purchaser without any specification of time, has a reasonable time, which is for the jury to determine. Hurst v. Williams, 31 Ky. L. R. 658, 102 S. W. 1176; Oliver v. Katz, 131 Wis. 409, I11 N. W. 509. See also Sees. 611, 612. .