A petition alleging that plaintiff became associated with defendant firm as a real estate broker, with an agreement that he should receive all commissions earned by the firm on property procured by him; that he listed with such firm property previously listed with him individually upon an agreement for a certain commission; that he brought the owner thereof to the firm's office, and that thereafter defendant firm purchased the land for themselves individually, without the consent of plaintiff, with an agreement that the vendor should pay no commission, and that plaintiff had never waived his right to a commission, states a cause of action. Burns v. Russell Bros., 146 S. W. 707, - Tex. Civ. App. - .