four
  o'clock
He handed Rachel a letter addressed in a small hand to Daniel Thompson . She opened it and read : `` Mr. Thompson : I hear you are out of work . I may be able to give you a job . Meet me at Washington Park , Tuesday afternoon , at four o'clock . I shall wear a blue ribbon round my neck , and you may have a red rose pinned to your coat . Otherwise I might not know you . `` RACHEL HARDING . ''