Plaintiff, vendee, who brought suit against agents to recover money paid on an invalid contract of sale, can take nothing by the fact that the appointment of the agent to sell the land was verbal; the receipt of $300 by the owners would estop them to deny the agency. Bogart v. Crosby, 80 Cal. 195, 22 P. 84; Morris v. Terrill, 2 Band. (Va.), 6.