M owes money to N. Therefore, he makes a promissory note for the amount in favor of N, for safety of transmission he cuts the note in half and posts one half to N. He then changes his mind and calls upon N to return half of the note which he had sent. N requires M to send the other half of the promissory note. Decide how rights of the parties are to be adjusted.

The question arising in this problem is whether the making of promissory note is complete when one half of the note was delivered to N. Under Section 46 of the N.I. Act, 1881, the making of a Promissory Note (P/N) is completed by delivery, actual or constructive. Delivery refers to the whole of the instrument and not merely a part of it. Delivery of half instrument cannot be treated as constructive delivery of the whole. So, the claim of N to have the other half of the P/N sent to him is not maintainable. M is justified in demanding the return of the first half sent by him. He can change his mind and refuse to send the other half of the P/N.