Byrne v. Van Tienhoven (1880)
Def. offered in a letter 1st Oct to sell tin plate to claimant. Letter received 11th Oct and offer accepted by telegraph. On 8th Oct def. sent a letter of revocation received on 20th Oct.
POSTING RULE - ACCEPTANCE EFFECTIVE MOMENT IT IS POSTED, OFFER, REVOCATION, REJECTION NOT EFFECTIVE UNTIL RECEIVED.