nine o'clock
`` I suppose so . '' But the _ bureau _ was closed for the night , and the two took a solitary walk along the beach . They walked on further than usual in the clear moonlight , till at last the tutor looked at his watch . `` It 's nine o'clock , '' said he ; `` we must go back . '' `` Let 's take the country road back . '' `` It is a mile longer . '' `` Never mind .