The defendant posted a letter on 1 October offering to sell to the plaintiff a quantity of tinplate, then posted another letter on 8 October withdrawing the offer. The first letter reached the plaintiff on 11 October and they accepted the offer at once by telegram, following with a confirmatory letter four days later. The second letter purporting to withdraw the offer arrived on 20 October, by which time the offer had been accepted and it was too late for the defendant to withdraw.