For example: 'Thirty days after sight pay this my first bill of exchange, for the sum of L100 sterling; second and third of the same tenor being unpaid.' This first bill is first sent, and by next conveyance the second is sent.

Should the first arrive safely, the second, on making its appearance, is destroyed.

The third is retained by the foreign correspondent till he hear whether the former two have arrived at their destination, and is sent only if they have been lost.

On receiving whichever comes first, it is the duty of the receiver to communicate intelligence of the fact to the sender.].