Protest of negotiable instruments: notary certification of dishonour or refusal of better security formalises holder's claim. Section 100 allows a holder whose promissory note or bill of exchange is dishonoured by non-acceptance or non-payment to have the dishonour noted and certified by a notary public (a protest) within a reasonable time. If an acceptor becomes insolvent or his credit is publicly impeached before maturity, the holder may demand better security and, if refused, have those facts noted and certified as a protest for better security within a reasonable time.