ten o'clock
I left my note-book on the table . '' And Lark walked slowly while Carol went rushing back . She found Prudence in the kitchen , and whispered : `` Here -- here 's a note , Prudence . Do n't read it until after I 've gone to school , -- at ten o'clock you may read it . Will you promise ? '' Prudence laughed a little , but she promised , and laid the note carefully away to wait the appointed hour for its perusal . As the clock struck ten she went to the mantle , and took it down .