189. An agent has authority, in an emergency, to do all such acts for the purpose of protecting his principal from loss as would be done by a person of ordinary prudence, in his own case, under similar circumstances.Illustrations (a) An agent for sale may have goods repaired if it be necessary. (b) A consigns provisions to B at Chittagong, with directions to send them immediately to C at Dhaka. B may sell the provisions at Chittagong, if they will not bear the journey to Dhaka without spoiling.