In an action by a real estate agent for commissions, in which defendant claimed that a contract to pay commissions was not made with plaintiff personally, but with him as agent of his father, an instruction that the first question to determine was whether the contract was between plaintiff and defendant, or between plaintiff's father and defendant, and that unless the jury find that the contract was entered into between plaintiff and defendant they should find for the latter, was not a sufficient statement of the principle that defendant was not liable if the contract was made with the principal as agent. Snyder v. Fidler, 125 Iowa, 378, 101 N. W. 130.