The document discusses negotiation and discharge of negotiable instruments. It defines negotiation as the transfer of an instrument like a promissory note, bill of exchange, or cheque to another person, making them the holder. Negotiation can occur through delivery or endorsement and delivery. Endorsement involves the maker or holder signing on the back or face of the instrument to negotiate it. The endorsee is the person the instrument is endorsed to. Endorsement transfers property in the instrument to the endorsee. The document outlines various types of endorsements and effects, who can endorse, discharge from liability, and material alterations.