28.(1) Where a person signs a promissory note, bill of exchange or cheque without adding to his signature words indicating that he signs it as an agent for and on behalf of a principal or in a representative character, he is personally liable thereon but the mere addition to his signature of words describing him as an agent or as filling a representative character does not exempt him from personal liability. (2) Notwithstanding anything contained in sub-section (1), any person signing a promissory note, bill of exchange or cheque for and on behalf of the principal is not liable to a person who induces him to sign upon the belief that the principal alone would be held liable.