93. When a promissory note, bill of exchange or cheque is dishonoured by non-acceptance or non-payment, the holder thereof, or some party thereto who remains liable thereon, must give notice that the instrument has been so dishonoured to all other parties whom the holder seeks to make severally liable thereon, and to some one of several parties whom he seeks to make jointly liable thereon. When a bill of exchange is dishonoured by non-acceptance the drawer or any indorser to whom such notice is not given is discharged; but the rights of a holder in due course subsequent to the omission to give notice shall not be prejudiced by that omission. When a bill of exchange is dishonoured by non-acceptance and due notice of dishonour is given, it shall not be necessary to give notice of a subsequent dishonour by non-payment, unless the bill shall, in the meantime, have been accepted. Nothing in this section renders it necessary to give notice to the maker of the dishonoured promissory note or the drawee or acceptor of the dishonoured bill of exchange or cheque.