Where, in an action by a real estate broker for commissions for procuring a purchaser of real estate, it appears that the terms of sale were not given by defendant at the time the broker was employed, evidence of occurrences at the meeting of the parties resulting in the purchaser's refusing to accept the contract proposed was admissible, whether defendant had an option on the property or had merely authority to sell it. Behrman v. Marcus, 107 N. Y. S. 12. Also where terms were not expressed in written agreement, parol evidence to establish same. Casey v. Richards (Cal. App. '09), 101 P. 36.