Where the principal accepts the purchaser found by his broker, without questioning his ability to perform, and the sale fails of consummation by the purchaser's own fault or failure to make good his offer, the burden is on the principal in order to defeat the broker's right to compensation, to show the purchaser's want of ability. Dodson v. Milliken, 27 App. (D. C.) 500; Phinizy v. Bush, 129 Ga. 479, 59 S. E. 259; (In many States owner bound by acceptance.) Compare Secs. 694, 842.