In an action for commissions by real estate brokers, where the defense was that defendants had cancelled plaintiffs' employment before the sale, testimony whether a proposition received after the alleged abandonment was more or less favorable than the original one, was competent on the question of abandonment, and was improperly excluded. Young v. Hubbard, 154 Mich. 218, 117 N. W. 632, 15 D. L. N. 725.