cover 1843 (9 May) entire letter written from Glasgow addressed to "Rev. Henry Nisbet, of Tanna N.H., Care of the Revd. Dr. Ross, Sydney", showing straight-line "POSTAGE NOT PAID" with, on reverse, manuscript notation "This has been returned to me owing to it not being paid - Thinking that letters would be ... to be delivered when not paid. I have not been in the habit of doing so". The letter was subsequently forwarded privately