2. It is a general rule that a proposal offered to another for acceptance may be withdrawn at any time before it is accepted, provided that notice of the withdrawal be given to the party to whom it was made. A bid (q. v.) may be withdrawn at any time before acceptance; and a proposal by letter may be withdrawn at any time before, acceptance 1 Pick. 278; and, if accepted, it must be, in the very terms offered. 3 Wheat. 225. Vide Bid; Correspondence; Letter; Offer.