If the seller is unable to deliver a title substantially such as he agreed to give in his contract, the purchaser may reject the title. He is then entitled to the return of the deposit he paid on the signing of the contract, together with interest at the legal rate from the time he made the payment to the time it is repaid to him. He is entitled also to be compensated for such reasonable expense as he may have incurred in the examination of the title. He can recover as damages a lost profit on the transaction only in case the seller was guilty of a fraud or should have known the title was defective. The purchaser's remedies are more fully discussed at page 60.