four o'clock
`` I am sure of that , Sampson . '' `` When am I to start for Southampton , sir ? '' `` Well , I think you 'd better go to-morrow , Sampson . You can leave London by the afternoon train , which starts at four o'clock . You can see to your work here in the morning , and reach your destination between seven and eight . I leave everything in your hands . Miss Laura Dunbar will come up to town to meet her father at the house in Portland Place .