midnight
Wags came and rested his head in Tom 's hand . `` Old boy , you know we are worried , do n't you ? '' said Tom , and the dog looked up as if he understood . It was a long time before their watches pointed to midnight . Then Songbird stretched himself . `` I am so sleepy I can scarcely keep my eyes open , '' he said with a yawn . `` Then go to sleep , '' said Tom .