A contract consisting of letters engaging real estate brokers to find a purchaser for land, in consideration for which they were to receive all of the price received in excess of $10 per acre, construed and held not to authorize brokers to find a purchaser for any part of the tract less than the whole. Bentley v. Edwards, 146 N. W. 347, 125 Minn. 179, Ann. Cas. 1915 C, 882, 51 L. R. A. (N. S.) 254; Cone v. Keil, 124 P. 548, 18 Cal. App. 675.

A broker employed to procure within a specified time a purchaser at a specified price does not earn his commission by procuring a person willing to purchase a part of the property at a reduced price, though the owner after the specified time sells to such person at a reduced price. Young v. Stecher Cooperage Wks., 168 S. W. 611, 259 Mo. 215.